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<front>
<journal-meta>
<journal-id journal-id-type="publisher-id">LV</journal-id>
<journal-id journal-id-type="nlm-ta">Lijec Vjesn</journal-id>
<journal-title-group>
<journal-title>Lijecnicki Vjesnik</journal-title>
<abbrev-journal-title abbrev-type="pubmed">Lijec. Vjesn.</abbrev-journal-title>
</journal-title-group>
<issn pub-type="ppub">0024-3477</issn>
<issn pub-type="epub">1849-2177</issn>
<publisher><publisher-name>Croatian Medical Association</publisher-name></publisher>
</journal-meta>
<article-meta>
<article-id pub-id-type="publisher-id">LV-148-29</article-id>
<article-id pub-id-type="doi">10.26800/LV-148-1-2-5</article-id>
<article-categories><subj-group subj-group-type="heading"><subject>Drugs and procedures</subject></subj-group>
</article-categories>
<title-group>
<article-title>Kontroverze u osteoporozi &#x2013; lije&#x010D;imo li ko&#x0161;tanu gusto&#x0107;u ili sprje&#x010D;avamo prijelome?</article-title>
<trans-title-group xml:lang="en">
<trans-title>Controversies in osteoporosis &#x2013; are we treating bone density or preventing fractures?</trans-title>
</trans-title-group>
</title-group>
<contrib-group>
<contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-4379-2250</contrib-id><name><surname>Kraljevi&#x0107;</surname><given-names>Ivana</given-names></name><xref ref-type="aff" rid="aff1"><sup>1</sup></xref><xref ref-type="aff" rid="aff2"><sup>2</sup></xref></contrib><contrib contrib-type="author"><name><surname>Novak</surname><given-names>Anela</given-names></name><xref ref-type="aff" rid="aff3"><sup>3</sup></xref><xref ref-type="aff" rid="aff4"><sup>4</sup></xref></contrib>
<aff id="aff1"><label>1</label><institution>Medicinski fakultet, Sveu&#x010D;ili&#x0161;te u Zagrebu</institution>, <addr-line>Zagreb</addr-line></aff>
<aff id="aff2"><label>2</label><institution>Zavod za endokrinologiju, Klinika za unutarnje bolesti, Klini&#x010D;ki bolni&#x010D;ki centar Zagreb</institution>, <addr-line>Zagreb</addr-line></aff>
<aff id="aff3"><label>3</label><institution>Medicinski fakultet, Sveu&#x010D;ili&#x0161;te u Splitu</institution>, <addr-line>Split</addr-line></aff>
<aff id="aff4"><label>4</label><institution>Zavod za endokrinologiju, Klinika za unutarnje bolesti, Klini&#x010D;ki bolni&#x010D;ki centar Split</institution>, <addr-line>Split</addr-line></aff>
</contrib-group>
<author-notes>
<corresp id="cor1">Adresa za dopisivanje: Doc. dr. sc. Ivana Kraljevi&#x0107;, dr. med., <ext-link ext-link-type="uri" xlink:href="https://orcid.org/0000-0002-4379-2250">https://orcid.org/0000-0002-4379-2250</ext-link>, Zavod za endokrinologiju, Klinika za unutarnje bolesti, Klini&#x010D;ki bolni&#x010D;ki centar Zagreb, Ki&#x0161;pati&#x0107;eva 12, 10000 Zagreb, e-po&#x0161;ta: <email xlink:href="ivana.kraljevic@gmail.com">ivana.kraljevic@gmail.com</email></corresp>
<fn fn-type="con">
<p content-type="fn-title">DOPRINOS AUTORA</p>
<p>K<sc>oncepcija</sc> <sc>ili</sc> <sc>nacrt</sc> <sc>rada</sc>: IK, AN</p>
<p>P<sc>rikupljanje</sc>, <sc>analiza</sc> <sc>i</sc> <sc>interpretacija</sc> <sc>podataka</sc>: IK, AN</p>
<p>P<sc>isanje</sc> <sc>prve</sc> <sc>verzije</sc> <sc>rada</sc>: IK, AN</p>
<p>K<sc>riti&#x010D;ka</sc> <sc>revizija</sc>: IK, AN</p>
</fn>
</author-notes>
<pub-date date-type="pub" publication-format="electronic"><month>03</month><year>2026</year></pub-date>
<pub-date date-type="pub" publication-format="print"><month>03</month><year>2026</year></pub-date>
<volume>148</volume>
<issue>1-2</issue>
<fpage>29</fpage>
<lpage>37</lpage>
<permissions>
<copyright-statement>Croatian Medical Association</copyright-statement>
<copyright-year>2026</copyright-year>
<copyright-holder>Croatian Medical Association</copyright-holder>
<license xlink:href="https://creativecommons.org/licenses/by-nc-nd/4.0/" specific-use="CC BY-NC-ND 4.0"><license-p>This is an open-access article distributed under the terms of the Creative Commons Attribution Non-Commercial No Derivatives (CC BY-NC-ND) 4.0 License.</license-p></license>
</permissions>
<abstract>
<title>SA&#x017D;ETAK</title>
<p>Osteoporoza je zna&#x010D;ajan javnozdravstveni problem povezan s pove&#x0107;anim rizikom od prijeloma, osobito u starijoj populaciji. Dosada&#x0161;nje strategije prevencije prijeloma temeljile su se na pretpostavci da je denzitometrijski utvr&#x0111;ena niska mineralna gusto&#x0107;a kosti (BMD) koja zadovoljava kriterije Svjetske zdravstvene organizacije (WHO) za postavljanje dijagnoze osteoporoze glavni uzrok prijeloma, te se primarno farmakoterapijom koja dovodi do porasta BMD-a nastojalo smanjiti rizik od prijeloma. Takav pristup preusmjerava fokus s ukupnog rizika prijeloma na samu mineralnu gusto&#x0107;u kosti, zanemaruju&#x0107;i druge klju&#x010D;ne &#x010D;imbenike koji odre&#x0111;uju &#x010D;vrsto&#x0107;u i otpornost kosti. Procjena rizika prijeloma stoga zahtijeva &#x0161;iri pristup koji uklju&#x010D;uje ne samo BMD, nego i kvalitetu kosti, FRAX alat, trabekularni indeks kosti (TBS), sklonost padovima i povijest prijeloma. Prevencija prijeloma obuhva&#x0107;a ne samo farmakolo&#x0161;ke mjere, ve&#x0107; i optimizaciju prehrane, adekvatan unos kalcija, vitamina D i proteina, te redovitu tjelesnu aktivnost i smanjenje rizika od padova. Antiresorptivni lijekovi (bisfosfonati, denosumab) i anaboli&#x010D;ki lijekovi (teriparatid) u&#x010D;inkoviti su, ali njihova dugotrajna primjena zahtijeva pa&#x017E;ljivu reevaluaciju zbog mogu&#x0107;ih nuspojava. Koncept depreskripcije, osobito kod starijih i nepokretnih osoba, nagla&#x0161;ava racionalnu i individualiziranu terapiju. Cilj lije&#x010D;enja osteoporoze nije samo pove&#x0107;anje BMD-a, ve&#x0107; smanjenje ukupnog rizika prijeloma kroz integrirani pristup koji uklju&#x010D;uje procjenu rizika, prevenciju padova i prilago&#x0111;eno farmakolo&#x0161;ko lije&#x010D;enje.</p>
</abstract>
<trans-abstract xml:lang="en">
<title>SUMMARY</title>
<p>Osteoporosis is a significant public health issue associated with increased fracture risk, particularly in the aging population. Earlier strategies for fracture prevention were largely based on the assumption that fractures are primarily caused by low bone mineral density (BMD) fulfilling the World Health Organization (WHO) densitometric criteria for osteoporosis, and that pharmacological treatment aimed at increasing BMD would consequently reduce fracture risk. This approach shifts the focus from overall fracture risk to BMD alone, overlooking other key determinants of bone strength and resistance. Therefore, fracture risk assessment requires a comprehensive approach that incorporates not only BMD but also bone quality, the FRAX tool, trabecular bone score (TBS), fall risk, and a history of prior fractures. Fracture prevention should not rely solely on pharmacotherapy, but also include nutritional optimization, adequate intake of calcium, vitamin D, and protein, as well as regular physical activity and fall prevention strategies. Antiresorptive agents (bisphosphonates, denosumab) and anabolic drugs (teriparatide) are effective but require periodic re-evaluation due to potential long-term adverse effects. The concept of deprescribing, particularly in frail or immobile older adults, emphasizes rational, individualized treatment decisions. The goal of osteoporosis management is not merely to increase BMD but to reduce overall fracture risk through an integrated approach combining risk assessment, fall prevention, and tailored pharmacologic therapy.</p>
</trans-abstract>
<kwd-group kwd-group-type="author"><kwd>Deskriptori OSTEOPOROZA &#x2013; dijagnoza, slikovna dijagnostika, lije&#x010D;enje</kwd><kwd>PRIJELOMI ZBOG OSTEOPOROZE &#x2013; etiologija, prevencija</kwd><kwd>GUSTO&#x0106;A KOSTI</kwd><kwd>DENZITOMETRIJA</kwd><kwd>PROCJENA RIZIKA &#x2013; metode</kwd><kwd>SLU&#x010C;AJNI PADOVI &#x2013; prevencija</kwd><kwd>ANTIRESORPTIVNI LIJEKOVI &#x2013; terapijska uporaba</kwd><kwd>BISFOSFONATI &#x2013; terapijska uporaba</kwd><kwd>VITAMIN D</kwd><kwd>KALCIJ</kwd><kwd>TJELESNA AKTIVNOST</kwd></kwd-group>
<kwd-group kwd-group-type="translator" xml:lang="en"><title>Descriptors </title><kwd>OSTEOPOROSIS &#x2013; diagnostic imaging, diagnosis, therapy</kwd><kwd>OSTEOPOROTIC FRACTURES &#x2013; etiology, prevention and control</kwd><kwd>BONE DENSITY</kwd><kwd>DENSITOMETRY</kwd><kwd>RISK ASSESSMENT &#x2013; methods</kwd><kwd>ACCIDENTAL FALLS &#x2013; prevention and control</kwd><kwd>BONE DENSITY CONSERVATION AGENTS &#x2013; therapeutic use</kwd><kwd>DIPHOSPHONATES &#x2013; therapeutic use</kwd><kwd>VITAMIN D</kwd><kwd>CALCIUM, DIETARY</kwd><kwd>EXERCISE</kwd></kwd-group>
</article-meta>
</front>
<body>
<p>Prijelomi kostiju su sve ve&#x0107;i javnozdravstveni problem u starijoj populaciji, osobito zbog porasta prevalencije osteoporoze. Prema podatcima Me&#x0111;unarodne zaklade za osteoporozu (<italic>International Osteoporosis Foundation</italic>, IOF), jedna od tri &#x017E;ene i jedan od pet mu&#x0161;karaca starijih od pedeset godina do&#x017E;ivjet &#x0107;e prijelom kosti uslijed osteoporoze. (<xref ref-type="bibr" rid="r1"><italic>1</italic></xref>, <xref ref-type="bibr" rid="r2"><italic>2</italic></xref>) Ova statistika potvr&#x0111;ena je u recentnoj literaturi, gdje se navodi da je rizik od osteoporoti&#x010D;nih prijeloma zna&#x010D;ajno ve&#x0107;i kod &#x017E;ena, ali i kod mu&#x0161;karaca nakon pedesete godine &#x017E;ivota. (<xref ref-type="bibr" rid="r1"><italic>1</italic></xref>, <xref ref-type="bibr" rid="r2"><italic>2</italic></xref>)</p>
<p>Godi&#x0161;nji broj prijeloma kostiju globalno je izuzetno visok, iako precizne brojke poput &#x201E;37 milijuna prijeloma godi&#x0161;nje&#x201C; i &#x201E;vi&#x0161;e od 10 milijuna prijeloma kuka kod osoba starijih od 55 godina&#x201C; nisu eksplicitno potvr&#x0111;ene u najnovijim klini&#x010D;kim smjernicama ili epidemiolo&#x0161;kim pregledima iz dostupne literature. Me&#x0111;utim, poznato je da su prijelomi kuka i kralje&#x0161;ka naj&#x010D;e&#x0161;&#x0107;i i najte&#x017E;i oblici osteoporoti&#x010D;nih prijeloma, s velikim utjecajem na morbiditet i mortalitet. (<xref ref-type="bibr" rid="r1"><italic>1</italic></xref>, <xref ref-type="bibr" rid="r3"><italic>3</italic></xref>)</p>
<p>Dosada&#x0161;nje strategije prevencije prijeloma temeljile su se na pretpostavci da je denzitometrijski utvr&#x0111;ena niska mineralna gusto&#x0107;a kosti (skr. BMD, prema engl. <italic>bone mineral density</italic>) glavni uzrok prijeloma, zbog &#x010D;ega je klini&#x010D;ki fokus &#x010D;esto bio usmjeren primarno na lije&#x010D;enje smanjenog BMD-a. Takav pristup ima nekoliko va&#x017E;nih ograni&#x010D;enja. Prvo, dijagnoza osteoporoze temeljila se na mjerenju BMD-a prema kriterijima WHO-a, koji ne odra&#x017E;ava sve aspekte kvalitete kosti. (<xref ref-type="bibr" rid="r4"><italic>4</italic></xref>) Drugo, epidemiolo&#x0161;ki podatci pokazuju da vi&#x0161;e od polovice prijeloma nastaje kod osoba s BMD-om u granicama osteopenije, &#x0161;to zna&#x010D;i da se zna&#x010D;ajan broj prijeloma doga&#x0111;a izvan stroge definicije osteoporoze. (<xref ref-type="bibr" rid="r1"><italic>1</italic></xref>, <xref ref-type="bibr" rid="r4"><italic>4</italic></xref>, <xref ref-type="bibr" rid="r5"><italic>5</italic></xref>) Klasifikacija prema BMD-u predstavlja dogovoreni, statisti&#x010D;ki prag koji je izvorno uveden radi epidemiolo&#x0161;ke usporedivosti, a ne kao biolo&#x0161;ka granica rizika ili jedini klini&#x010D;ki kriterij za lije&#x010D;enje.</p>
<p>Tijekom posljednjih godina do&#x0161;lo je do va&#x017E;nog pomaka u razumijevanju osteoporoze, te se ona danas, prema suvremenim smjernicama <italic>American Association of Clinical Endocrinology</italic> (skr. AACE), <italic>American College of Physicians</italic> (skr. ACP), <italic>Bone Health and Osteoporosis Foundation</italic> (skr. BHOF) i <italic>Endocrine Society</italic> (skr. ES) promatra kao klini&#x010D;ki sindrom pove&#x0107;anog rizika prijeloma, a ne isklju&#x010D;ivo kao denzitometrijska dijagnoza. (<xref ref-type="bibr" rid="r1"><italic>1</italic></xref>, <xref ref-type="bibr" rid="r4"><italic>4</italic></xref>, <xref ref-type="bibr" rid="r6"><italic>6</italic></xref>) Unato&#x010D; tomu, u svakodnevnoj klini&#x010D;koj praksi i dalje &#x010D;esto prevladava oslanjanje na vrijednost BMD-a kao dominantni kriterij za dono&#x0161;enje terapijskih odluka.</p>
<p>BMD stoga treba promatrati kao jedan od pokazatelja ukupnog rizika prijeloma, a ne kao njegovu izravnu mjeru. Upravo zato je va&#x017E;no procjenjivati ukupni rizik od prijeloma, a ne isklju&#x010D;ivo BMD, &#x0161;to je ugra&#x0111;eno u alate poput FRAX-a. (<xref ref-type="bibr" rid="r1"><italic>1</italic></xref>, <xref ref-type="bibr" rid="r4"><italic>4</italic></xref>) Zaklju&#x010D;no, fokus klini&#x010D;ke prakse treba biti na smanjenju ukupnog rizika prijeloma, a ne samo na lije&#x010D;enju niske mineralne gusto&#x0107;e kosti. (<xref ref-type="bibr" rid="r1"><italic>1</italic></xref>, <xref ref-type="bibr" rid="r4"><italic>4</italic></xref>)</p>
<p>Cilj ovoga narativnog pregleda jest kriti&#x010D;ki analizirati dosada&#x0161;nje strategije dijagnostike i lije&#x010D;enja osteoporoze, s posebnim naglaskom na dilemu lije&#x010D;imo li ko&#x0161;tanu gusto&#x0107;u ili sprje&#x010D;avamo prijelome, te predstaviti aktualne koncepte procjene rizika i depreskripcije u klini&#x010D;koj praksi.</p>
<sec sec-type="other1">
<title>Metodologija pregleda</title>
<p>Za potrebe ovoga narativnog pregleda kori&#x0161;teni su podatci iz recentnih smjernica i preglednih &#x010D;lanaka relevantnih stru&#x010D;nih dru&#x0161;tava (<italic>American Association of Clinical Endocrinologists</italic>, <italic>American College of Physicians</italic>, <italic>American Geriatrics Society</italic>, <italic>Endocrine Society</italic>, <italic>International Osteoporosis Foundation</italic>), kao i radovi objavljeni u bazama <italic>PubMed</italic> i <italic>Scopus</italic> tijekom razdoblja 2000.&#x2013;2025. Klju&#x010D;ne rije&#x010D;i uklju&#x010D;ivale su &#x201E;<italic>osteoporosis</italic>&#x201C;, &#x201E;<italic>fracture prevention</italic>&#x201C;, &#x201E;<italic>bone mineral density</italic>&#x201C;, &#x201E;FRAX&#x201C;, &#x201E;<italic>trabecular bone score</italic>&#x201C;, &#x201E;<italic>deprescribing</italic>&#x201C; i &#x201E;<italic>fall prevention</italic>&#x201C;. Naglasak je stavljen na radove koji analiziraju klini&#x010D;ke kontroverze u dijagnostici, lije&#x010D;enju i depreskripciji osteoporoze.</p>
</sec>
<sec sec-type="other2">
<title>Procjena rizika prijeloma</title>
<p>Rizik od prijeloma predvi&#x0111;a se pomo&#x0107;u mineralne gusto&#x0107;e kosti <bold>(</bold>engl. <italic>Bone Mineral Density</italic>, BMD), trabekularnog indeksa kosti (engl. <italic>Trabecular Bone Score</italic>, TBS), kvalitete kosti, alata za procjenu rizika od prijeloma (engl. <italic>Fracture Risk Assessment Tool</italic>, FRAX), sklonosti padovima i prethodnih prijeloma. (<xref ref-type="bibr" rid="r1"><italic>1</italic></xref>&#x2013;<xref ref-type="bibr" rid="r11"><italic>11</italic></xref>)</p>
<p>BMD se trenutno smatra samo jednim, iako vrlo va&#x017E;nim, &#x010D;imbenikom u procjeni rizika za prijelom. Suvremene smjernice i konsenzus u medicinskoj literaturi nagla&#x0161;avaju da je procjena rizika za prijelom multifaktorska te uklju&#x010D;uje dob, prethodne prijelome, sklonost padovima, kvalitetu kosti i klini&#x010D;ke &#x010D;imbenike uz BMD. (<xref ref-type="bibr" rid="r1"><italic>1</italic></xref>, <xref ref-type="bibr" rid="r12"><italic>12</italic></xref>, <xref ref-type="bibr" rid="r13"><italic>13</italic></xref>)</p>
<p>Modernu definiciju osteoporoze predlo&#x017E;ila je 1994. godine Svjetska zdravstvena organizacija, koja je osteoporozu definirala kao BMD 2,5 standardne devijacije ispod srednje vrijednosti za mlade odrasle &#x017E;ene (T-score &#x2264; &#x2013;2,5), &#x010D;ime se automatski klasificira oko 30% postmenopauzalnih &#x017E;ena kao osobe s osteoporozom. (<xref ref-type="bibr" rid="r13"><italic>13</italic></xref>&#x2013;<xref ref-type="bibr" rid="r15"><italic>15</italic></xref>) Ova dijagnosti&#x010D;ka metoda ne uzima u obzir fiziolo&#x0161;ki pad BMD-a s godinama, &#x0161;to je dovelo do prekomjerne dijagnoze osteoporoze i potencijalno nepotrebnih farmakolo&#x0161;kih intervencija. (<xref ref-type="bibr" rid="r14"><italic>14</italic></xref>&#x2013;<xref ref-type="bibr" rid="r16"><italic>16</italic></xref>)</p>
<p>Osteopenija, definirana kao T-score izme&#x0111;u &#x2212;1,0 i &#x2212;2,5, nema biolo&#x0161;ko ni klini&#x010D;ko zna&#x010D;enje kao dijagnoza bolesti i nije namijenjena za individualno vo&#x0111;enje terapije. Ova oznaka mo&#x017E;e dovesti do pogre&#x0161;nog tuma&#x010D;enja rizika i nepotrebne anksioznosti, budu&#x0107;i da ve&#x0107;ina osoba s osteopenijom nikada ne&#x0107;e razviti osteoporozu niti do&#x017E;ivjeti prijelom. Ve&#x0107;ina prijeloma zapravo nastaje u populaciji s osteopenijom zbog njezine brojnosti, a ne zbog visokoga individualnog rizika. Stoga se umjesto kategorije &#x201E;osteopenija&#x201C; preporu&#x010D;uje kori&#x0161;tenje neutralnijeg izraza &#x201E;smanjena mineralna gusto&#x0107;a kosti&#x201C; (smanjeni BMD). (<xref ref-type="bibr" rid="r6"><italic>6</italic></xref>)</p>
<p>Osim &#x0161;to nalaz BMD-a mo&#x017E;e biti la&#x017E;no pozitivan ili la&#x017E;no negativan, postoje i brojna ograni&#x010D;enja denzitometrije. Ona uklju&#x010D;uju tehnolo&#x0161;ke razlike me&#x0111;u ure&#x0111;ajima, koje onemogu&#x0107;uju kvantitativnu usporedbu vrijednosti BMD-a izmjerenih na razli&#x010D;itim aparatima, kao i pogre&#x0161;ke mjerenja uzrokovane nepravilnim pozicioniranjem pacijenta, nedovoljnim poznavanjem uklanjanja artefakata te utjecajem degenerativnih promjena (osteofiti, skolioza, kalcifikacije) na rezultate. (<xref ref-type="bibr" rid="r6"><italic>6</italic></xref>, <xref ref-type="bibr" rid="r17"><italic>17</italic></xref>&#x2013;<xref ref-type="bibr" rid="r19"><italic>19</italic></xref>) Ameri&#x010D;ko udru&#x017E;enje klini&#x010D;kih endokrinologa (AACE) isti&#x010D;e da su pogre&#x0161;ke u interpretaciji nalaza DXA &#x010D;este i mogu zna&#x010D;ajno utjecati na dijagnozu i terapiju. (<xref ref-type="bibr" rid="r6"><italic>6</italic></xref>)</p>
<p>TBS je pokazatelj kvalitete i strukture kosti, izra&#x010D;unat na temelju denzitometrijske snimke lumbalne kralje&#x017E;nice, koji kvantificira teksturalne karakteristike slike i time reflektira mikroarhitekturu trabekularne kosti. (<xref ref-type="bibr" rid="r20"><italic>20</italic></xref>&#x2013;<xref ref-type="bibr" rid="r22"><italic>22</italic></xref>) TBS je neovisan prediktor rizika prijeloma, &#x0161;to zna&#x010D;i da neovisno o BMD-u dodatno predvi&#x0111;a rizik prijeloma, a integracija TBS-a u FRAX kalkulator pobolj&#x0161;ava procjenu rizika, osobito kod osoba s osteopenijom i kod onih blizu pragova za farmakolo&#x0161;ku intervenciju. (<xref ref-type="bibr" rid="r7"><italic>7</italic></xref>, <xref ref-type="bibr" rid="r9"><italic>9</italic></xref>, <xref ref-type="bibr" rid="r22"><italic>22</italic></xref>&#x2013;<xref ref-type="bibr" rid="r25"><italic>25</italic></xref>)</p>
<p>TBS je posebno koristan u procjeni rizika kod osoba s osteopenijom, gdje BMD s&#x00E2;m nije dovoljan za stratifikaciju rizika, te u situacijama kada se razmatra uvo&#x0111;enje farmakolo&#x0161;ke terapije. (<xref ref-type="bibr" rid="r9"><italic>9</italic></xref>, <xref ref-type="bibr" rid="r25"><italic>25</italic></xref>) Klini&#x010D;ke smjernice <italic>International Society for Clinical Densitometry</italic> (ISCD) isti&#x010D;u da TBS mo&#x017E;e promijeniti klini&#x010D;ko upravljanje kod osoba blizu intervencijskog praga prema FRAX-u. (<xref ref-type="bibr" rid="r23"><italic>23</italic></xref>) Nalaz TBS-a mo&#x017E;e biti naru&#x0161;en degenerativnim promjenama kralje&#x017E;nice, artefaktima, nepravilnim pozicioniranjem pacijenata i pove&#x0107;anom tjelesnom masom, &#x0161;to je va&#x017E;no uzeti u obzir pri interpretaciji. (<xref ref-type="bibr" rid="r20"><italic>20</italic></xref>, <xref ref-type="bibr" rid="r21"><italic>21</italic></xref>, <xref ref-type="bibr" rid="r23"><italic>23</italic></xref>) TBS se trenutno koristi isklju&#x010D;ivo za analizu lumbalne kralje&#x017E;nice (L1-L4). (<xref ref-type="bibr" rid="r20"><italic>20</italic></xref>, <xref ref-type="bibr" rid="r21"><italic>21</italic></xref>, <xref ref-type="bibr" rid="r23"><italic>23</italic></xref>)</p>
<p>Kvaliteta kosti obuhva&#x0107;a sve karakteristike koje, uz mineralnu gusto&#x0107;u kosti, utje&#x010D;u na &#x010D;vrsto&#x0107;u i otpornost kosti na prijelome. To uklju&#x010D;uje mikroarhitekturu kosti, dinamiku remodeliranja, kvalitetu kolagena i stupanj mineralizacije. (<xref ref-type="bibr" rid="r26"><italic>26</italic></xref>&#x2013;<xref ref-type="bibr" rid="r29"><italic>29</italic></xref>) Ovaj koncept je iznimno va&#x017E;an jer sama mineralna gusto&#x0107;a kosti ne daje potpunu sliku rizika od prijeloma &#x2013; dvije osobe s istim vrijednostima BMD-a mogu imati zna&#x010D;ajno razli&#x010D;it rizik upravo zbog razlika u kvaliteti kosti. (<xref ref-type="bibr" rid="r26"><italic>26</italic></xref>, <xref ref-type="bibr" rid="r28"><italic>28</italic></xref>, <xref ref-type="bibr" rid="r30"><italic>30</italic></xref>&#x2013;<xref ref-type="bibr" rid="r32"><italic>32</italic></xref>) Unato&#x010D; va&#x017E;nosti ovog koncepta, postoje zna&#x010D;ajna ograni&#x010D;enja u njegovoj definiciji. Trenutno ne postoje jasno definirani kriteriji koji bi u klini&#x010D;koj praksi pouzdano razlikovali &#x201E;dobru&#x201C; od &#x201E;lo&#x0161;e&#x201C; kvalitete kosti. (<xref ref-type="bibr" rid="r27"><italic>27</italic></xref>, <xref ref-type="bibr" rid="r29"><italic>29</italic></xref>, <xref ref-type="bibr" rid="r33"><italic>33</italic></xref>, <xref ref-type="bibr" rid="r34"><italic>34</italic></xref>) Ve&#x0107;ina metoda za procjenu kvalitete kosti, poput biopsije, visokorezolucijskog perifernog kvantitativnog CT (HR-pQCT) ili mikroindentacije, ograni&#x010D;ena je visokom cijenom, invazivno&#x0161;&#x0107;u ili nedostupno&#x0161;&#x0107;u za rutinsku klini&#x010D;ku primjenu. (<xref ref-type="bibr" rid="r27"><italic>27</italic></xref>, <xref ref-type="bibr" rid="r33"><italic>33</italic></xref>, <xref ref-type="bibr" rid="r34"><italic>34</italic></xref>) Stoga se u svakodnevnoj praksi procjena rizika od prijeloma i dalje primarno temelji na BMD-u, uz svijest o va&#x017E;nosti dodatnih &#x010D;imbenika kvalitete kosti.</p>
<p>FRAX je alat koji je razvila Svjetska zdravstvena organizacija za izra&#x010D;unavanje desetogodi&#x0161;nje vjerojatnosti prijeloma kuka ili ve&#x0107;ega osteoporoti&#x010D;nog prijeloma (kralje&#x017E;nica, rame, podlaktica), uzimaju&#x0107;i u obzir naj&#x010D;e&#x0161;&#x0107;e klini&#x010D;ke &#x010D;imbenike rizika i po potrebi vrijednost mineralne gusto&#x0107;e vrata bedrene kosti. (<xref ref-type="bibr" rid="r35"><italic>35</italic></xref>, <xref ref-type="bibr" rid="r36"><italic>36</italic></xref>) Klini&#x010D;ki &#x010D;imbenici rizika uklju&#x010D;eni u FRAX jesu: dob, indeks tjelesne mase (BMI), obiteljska anamneza prijeloma kuka, prethodni prijelom, terapija glukokortikoidima, reumatoidni artritis, pu&#x0161;enje, ekscesivno pijenje alkohola, sekundarni uzroci osteoporoze (npr. hipogonadizam, prijevremena ovarijska insuficijencija, &#x0161;e&#x0107;erna bolest tipa 1, nelije&#x010D;ena dugogodi&#x0161;nja hipertireoza, malapsorpcija, kroni&#x010D;na bolest jetre). (<xref ref-type="bibr" rid="r6"><italic>6</italic></xref>, <xref ref-type="bibr" rid="r35"><italic>35</italic></xref>, <xref ref-type="bibr" rid="r36"><italic>36</italic></xref>) Ograni&#x010D;enja alata FRAX detaljno su opisana u medicinskoj literaturi. FRAX predvi&#x0111;a samo rizik za prijelom kuka i ve&#x0107;e osteoporoti&#x010D;ne prijelome (kralje&#x017E;nica, rame, podlaktica), dok ne obuhva&#x0107;a ostale prijelome koji &#x010D;ine gotovo 50% svih osteoporoti&#x010D;nih prijeloma. (<xref ref-type="bibr" rid="r6"><italic>6</italic></xref>, <xref ref-type="bibr" rid="r37"><italic>37</italic></xref>, <xref ref-type="bibr" rid="r38"><italic>38</italic></xref>) Nadalje, FRAX podcjenjuje rizik kod osoba s vi&#x0161;estrukim prijelomima, nedavnim prijelomima, niskom mineralnom gusto&#x0107;om kosti u lumbalnoj kralje&#x017E;nici, te kod onih s pove&#x0107;anim rizikom od padova, budu&#x0107;i da padovi nisu izravno uklju&#x010D;eni u izra&#x010D;un FRAX-a, iako zna&#x010D;ajno pove&#x0107;avaju rizik prijeloma i predstavljaju glavni uzrok ve&#x0107;ine prijeloma kod starijih osoba. (<xref ref-type="bibr" rid="r6"><italic>6</italic></xref>, <xref ref-type="bibr" rid="r37"><italic>37</italic></xref>, <xref ref-type="bibr" rid="r38"><italic>38</italic></xref>) Ameri&#x010D;ko udru&#x017E;enje klini&#x010D;kih endokrinologa i <italic>US Preventive Services Task Force</italic> isti&#x010D;u da je procjena rizika padova klju&#x010D;na jer FRAX ne uklju&#x010D;uje ovaj &#x010D;imbenik, a padovi su vode&#x0107;i uzrok prijeloma u starijoj populaciji. (<xref ref-type="bibr" rid="r6"><italic>6</italic></xref>, <xref ref-type="bibr" rid="r13"><italic>13</italic></xref>)</p>
<p>Padovi su &#x010D;esto nedovoljno prepoznati kao klju&#x010D;an &#x010D;imbenik rizika za prijelome, iako su vode&#x0107;i uzrok prijeloma kod starijih osoba i predstavljaju zna&#x010D;ajan javnozdravstveni problem. (<xref ref-type="bibr" rid="r39"><italic>39</italic></xref>, <xref ref-type="bibr" rid="r40"><italic>40</italic></xref>) Naj&#x010D;e&#x0161;&#x0107;i &#x010D;imbenici koji pove&#x0107;avaju rizik od pada i posljedi&#x010D;nog prijeloma uklju&#x010D;uju neurolo&#x0161;ke poreme&#x0107;aje (Parkinsonova bolest, periferna neuropatija, ranije preboljeli mo&#x017E;dani udar, demencija, poreme&#x0107;ena ravnote&#x017E;a hoda, autonomna disfunkcija s ortostatskom hipotenzijom, vrtoglavica), oslabljen vid i sluh, proksimalnu miopatiju, sarkopeniju, lijekove (sedative, hipnotike, antihipertenzive, narkotike) te &#x010D;imbenike okoline (slabo osvjetljenje, stepenice, mokri i klizavi podovi). (<xref ref-type="bibr" rid="r39"><italic>39</italic></xref>&#x2013;<xref ref-type="bibr" rid="r42"><italic>42</italic></xref>)</p>
<p>Medicinska literatura potvr&#x0111;uje da se padovi &#x010D;esto ne prepoznaju i ne procjenjuju sustavno, iako su multifaktorski i ve&#x0107;ina &#x010D;imbenika rizika je modificiraju&#x0107;a. (<xref ref-type="bibr" rid="r39"><italic>39</italic></xref>, <xref ref-type="bibr" rid="r43"><italic>43</italic></xref>, <xref ref-type="bibr" rid="r44"><italic>44</italic></xref>) Prema smjernicama Ameri&#x010D;koga gerijatrijskog dru&#x0161;tva (engl. <italic>American Geriatrics Society</italic>), godi&#x0161;nje ispitivanje rizika od pada preporu&#x010D;uje se svim osobama starijim od 65 godina, jer pacijenti &#x010D;esto sami ne prijavljuju padove. (<xref ref-type="bibr" rid="r39"><italic>39</italic></xref>, <xref ref-type="bibr" rid="r42"><italic>42</italic></xref>)</p>
<p>Prevencija prijeloma treba biti usmjerena ne samo na lije&#x010D;enje osteoporoze, ve&#x0107; i na sprje&#x010D;avanje padova, osobito kod starijih osoba. Intervencije poput vje&#x017E;bi za ravnote&#x017E;u i snagu, prilagodbe okoline, optimizacije terapije i lije&#x010D;enja komorbiditeta dokazano smanjuju u&#x010D;estalost padova i posljedi&#x010D;nih prijeloma. (<xref ref-type="bibr" rid="r39"><italic>39</italic></xref>, <xref ref-type="bibr" rid="r41"><italic>41</italic></xref>, <xref ref-type="bibr" rid="r44"><italic>44</italic></xref>)</p>
<p>Prethodni osteoporoti&#x010D;ni prijelomi sna&#x017E;an su rizi&#x010D;ni faktor za budu&#x0107;e prijelome; rizik za novi prijelom je zna&#x010D;ajno povi&#x0161;en neposredno nakon inicijalnog prijeloma, osobito u prvim dvjema godinama, &#x0161;to se u literaturi naziva &#x201E;<italic>imminent risk</italic>&#x201C;. (<xref ref-type="bibr" rid="r45"><italic>45</italic></xref>&#x2013;<xref ref-type="bibr" rid="r48"><italic>48</italic></xref>) Skoro 20% &#x017E;ena u postmenopauzi s prethodnim prijelomom kralje&#x017E;nice do&#x017E;ivi novi prijelom kralje&#x017E;nice unutar godine dana, a &#x017E;ene s povije&#x0161;&#x0107;u prijeloma imaju dvostruko ve&#x0107;i rizik za prijelom kuka u odnosu na &#x017E;ene bez prijeloma. (<xref ref-type="bibr" rid="r49"><italic>49</italic></xref>, <xref ref-type="bibr" rid="r50"><italic>50</italic></xref>) Pove&#x0107;ani rizik nije trajan, ve&#x0107; opada s vremenom od prijeloma i ovisi o dobi te lokalizaciji prijeloma; najvi&#x0161;i je u prvim mjesecima do dvije godine nakon prijeloma. (<xref ref-type="bibr" rid="r45"><italic>45</italic></xref>, <xref ref-type="bibr" rid="r48"><italic>48</italic></xref>, <xref ref-type="bibr" rid="r51"><italic>51</italic></xref>&#x2013;<xref ref-type="bibr" rid="r53"><italic>53</italic></xref>)</p>
<p>Pravovremeno lije&#x010D;enje bolesnika neposredno nakon prijeloma, uklju&#x010D;uju&#x0107;i farmakolo&#x0161;ku terapiju (npr. bisfosfonati, denosumab, teriparatid, romosozumab), mo&#x017E;e smanjiti broj novih prijeloma i pobolj&#x0161;ati kvalitetu &#x017E;ivota, &#x0161;to potvr&#x0111;uju smjernice ES, ACP, BHOF, IOF te <italic>European Society for Clinical and Economic Aspects of Osteoporosis, Osteoarthritis and Musculoskeletal Diseases</italic> (ESCEO). (<xref ref-type="bibr" rid="r4"><italic>4</italic></xref>) Uvo&#x0111;enje sekundarne prevencije odmah nakon prijeloma, uklju&#x010D;uju&#x0107;i farmakolo&#x0161;ku terapiju i organizirane sustave pra&#x0107;enja (npr. engl. <italic>fracture liaison services</italic>), dokazano smanjuje rizik od ponovnih prijeloma. (<xref ref-type="bibr" rid="r1"><italic>1</italic></xref>, <xref ref-type="bibr" rid="r4"><italic>4</italic></xref>) Procjena rizika i odluka o lije&#x010D;enju trebaju biti individualizirane, s naglaskom na pravovremenu intervenciju kod bolesnika s nedavnim prijelomom, osobito kralje&#x017E;nice i kuka. (<xref ref-type="bibr" rid="r45"><italic>45</italic></xref>&#x2013;<xref ref-type="bibr" rid="r48"><italic>48</italic></xref>)</p>
</sec>
<sec sec-type="other3">
<title>Nefarmakolo&#x0161;ke mjere za prevenciju prijeloma</title>
<p>Odr&#x017E;avanje optimalnih razina vitamina D i adekvatnog unosa kalcija klju&#x010D;no je za zdravlje kostiju, osobito kod starijih osoba. Preporu&#x010D;ena dnevna koli&#x010D;ina unosa kalcija za odrasle osobe iznosi 1000 mg za mu&#x0161;karce i &#x017E;ene do 50 godina, dok je za &#x017E;ene starije od 51 godine i mu&#x0161;karce starije od 70 godina preporu&#x010D;ena koli&#x010D;ina 1200 mg dnevno, uklju&#x010D;uju&#x0107;i kalcij iz prehrane i dodataka prehrani ako je unos hranom nedostatan. Preporu&#x010D;ena dnevna koli&#x010D;ina unosa vitamina D za osobe s osteoporozom je 800 do 1000 IU dnevno, uz individualizaciju prema prehrambenom unosu i razini vitamina D u serumu. Cilj je posti&#x0107;i koncentraciju 25-hidroksivitamina D u serumu od najmanje 50 nmol/L, a optimalno 75 nmol/L kod osoba s osteoporozom. Kombinacija kalcija i vitamina D dokazano smanjuje rizik od prijeloma kuka i pobolj&#x0161;ava mineralnu gusto&#x0107;u kosti, osobito kod institucionaliziranih i starijih osoba. (<xref ref-type="bibr" rid="r54"><italic>54</italic></xref>, <xref ref-type="bibr" rid="r55"><italic>55</italic></xref>)</p>
<p>Proteini su neophodni za odr&#x017E;avanje mi&#x0161;i&#x0107;ne mase i funkcije, &#x010D;ime se smanjuje rizik od sarkopenije, koja je povezana s pove&#x0107;anim rizikom od padova i prijeloma. Adekvatan unos proteina (najmanje 1,0 &#x2013; 1,2 g/kg/dan za starije osobe) pobolj&#x0161;ava mi&#x0161;i&#x0107;nu snagu i funkcionalnost te podr&#x017E;ava apsorpciju kalcija. (<xref ref-type="bibr" rid="r54"><italic>54</italic></xref>&#x2013;<xref ref-type="bibr" rid="r57"><italic>57</italic></xref>) Stvaranje sigurnoga &#x017E;ivotnog okru&#x017E;enja od presudne je va&#x017E;nosti za prevenciju padova, osobito kod starijih osoba. Prilagodbe uklju&#x010D;uju instalaciju ru&#x010D;ki u kupaonicama i hodnicima, uklanjanje prostirki i prepreka, osiguravanje dobrog osvjetljenja u svim prostorijama te kori&#x0161;tenje pomagala za hodanje. Takve intervencije smanjuju u&#x010D;estalost padova i posljedi&#x010D;nih prijeloma. (<xref ref-type="bibr" rid="r57"><italic>57</italic></xref>, <xref ref-type="bibr" rid="r58"><italic>58</italic></xref>) Tjelesna aktivnost je klju&#x010D;na komponenta u prevenciji prijeloma. Vje&#x017E;be koje uklju&#x010D;uju no&#x0161;enje te&#x017E;ine (npr. hodanje, tr&#x010D;anje) i trening snage (progresivni otpor, vje&#x017E;be s optere&#x0107;enjem) dokazano pobolj&#x0161;avaju mineralnu gusto&#x0107;u kostiju i mi&#x0161;i&#x0107;nu snagu, &#x0161;to je od posebne va&#x017E;nosti kod starijih osoba s osteoporozom. Vje&#x017E;be ravnote&#x017E;e i koordinacije, poput joge ili specijaliziranih programa za prevenciju padova, zna&#x010D;ajno smanjuju rizik od padova, koji su glavni uzrok prijeloma. (<xref ref-type="bibr" rid="r55"><italic>55</italic></xref>, <xref ref-type="bibr" rid="r58"><italic>58</italic></xref>&#x2013;<xref ref-type="bibr" rid="r61"><italic>61</italic></xref>)</p>
<p>Sve navedene mjere trebaju biti individualizirane i integrirane u multifaktorski pristup prevenciji prijeloma, uz redovitu procjenu rizika i prilagodbu intervencija prema potrebama pojedinca. (<xref ref-type="bibr" rid="r54"><italic>54</italic></xref>, <xref ref-type="bibr" rid="r56"><italic>56</italic></xref>, <xref ref-type="bibr" rid="r58"><italic>58</italic></xref>)</p>
</sec>
<sec sec-type="other4">
<title>Farmakolo&#x0161;ke mjere za prevenciju prijeloma</title>
<sec>
<title>Antiresorptivni lijekovi</title>
<p>Bisfosfonati (alendronat, risedronat, ibandronat i zoledronat) predstavljaju prvu liniju lije&#x010D;enja u prevenciji prijeloma kod pacijenata s osteoporozom. (<xref ref-type="bibr" rid="r4"><italic>4</italic></xref>) Ovi lijekovi djeluju inhibicijom osteoklasti&#x010D;ne aktivnosti, &#x010D;ime smanjuju resorpciju kosti i pove&#x0107;avaju mineralnu gusto&#x0107;u kosti. (<xref ref-type="bibr" rid="r4"><italic>4</italic></xref>) Randomizirane kontrolirane studije potvrdile su da bisfosfonati zna&#x010D;ajno smanjuju rizik od vertebralnih i nevertebralnih prijeloma kod osoba s osteoporozom ili prethodnim prijelomima. (<xref ref-type="bibr" rid="r4"><italic>4</italic></xref>) Me&#x0111;utim, dugotrajna primjena bisfosfonata nije bez rizika.</p>
<p>Dugoro&#x010D;na primjena bisfosfonata, posebno dulje od pet godina, mo&#x017E;e dovesti do ozbiljnih komplikacija, uklju&#x010D;uju&#x0107;i atipi&#x010D;ne prijelome femura i osteonekrozu &#x010D;eljusti. (<xref ref-type="bibr" rid="r1"><italic>1</italic></xref>, <xref ref-type="bibr" rid="r4"><italic>4</italic></xref>, <xref ref-type="bibr" rid="r62"><italic>62</italic></xref>&#x2013;<xref ref-type="bibr" rid="r66"><italic>66</italic></xref>) Dodatna kritika odnosi se na &#x010D;injenicu da se najve&#x0107;i broj prijeloma javlja kod osoba s osteopenijom, gdje u&#x010D;inkovitost bisfosfonata nije dokazana. (<xref ref-type="bibr" rid="r63"><italic>63</italic></xref>, <xref ref-type="bibr" rid="r65"><italic>65</italic></xref>) Prema smjernicama ACP-a, bisfosfonati su dokazano u&#x010D;inkoviti u prevenciji prijeloma kod osoba s dijagnosticiranom osteoporozom, dok kod osoba s osteopenijom bez dodatnih rizi&#x010D;nih &#x010D;imbenika (npr. prethodni prijelom, visoki FRAX rizik) nema jasnih dokaza o smanjenju rizika od prijeloma. (<xref ref-type="bibr" rid="r4"><italic>4</italic></xref>, <xref ref-type="bibr" rid="r63"><italic>63</italic></xref>) Rizik od atipi&#x010D;nih prijeloma femura i osteonekroze &#x010D;eljusti raste s duljinom trajanja terapije, osobito nakon pet godina kontinuirane primjene. (<xref ref-type="bibr" rid="r1"><italic>1</italic></xref>, <xref ref-type="bibr" rid="r62"><italic>62</italic></xref>&#x2013;<xref ref-type="bibr" rid="r64"><italic>64</italic></xref>) Incidencija ovih komplikacija je niska, ali je klini&#x010D;ki zna&#x010D;ajna, osobito kod dugotrajne terapije. (<xref ref-type="bibr" rid="r1"><italic>1</italic></xref>, <xref ref-type="bibr" rid="r63"><italic>63</italic></xref>&#x2013;<xref ref-type="bibr" rid="r65"><italic>65</italic></xref>) Stoga se preporu&#x010D;uje periodi&#x010D;na reevaluacija potrebe za nastavkom terapije bisfosfonatima, a kod bolesnika s niskim rizikom od prijeloma razmatra se prekid terapije (&#x201E;<italic>drug holiday</italic>&#x201C;) nakon pet godina. (<xref ref-type="bibr" rid="r4"><italic>4</italic></xref>)</p>
<p>Denosumab je monoklonsko protutijelo koje inhibira RANKL (skr. prema engl. <italic>Receptor Activator of Nuclear factor &#x03BA;B Ligand</italic>) i pru&#x017E;a jo&#x0161; jednu opciju u lije&#x010D;enju osteoporoze, posebno za pacijente koji ne podnose bisfosfonate. (<xref ref-type="bibr" rid="r1"><italic>1</italic></xref>, <xref ref-type="bibr" rid="r67"><italic>67</italic></xref>) U klini&#x010D;kim ispitivanjima denosumab je pokazao u&#x010D;inkovitost u sprje&#x010D;avanju prijeloma, smanjuju&#x0107;i rizik od vertebralnih, nevertebralnih i prijeloma kuka u bolesnika s osteoporozom. (<xref ref-type="bibr" rid="r1"><italic>1</italic></xref>, <xref ref-type="bibr" rid="r4"><italic>4</italic></xref>, <xref ref-type="bibr" rid="r66"><italic>66</italic></xref>) Me&#x0111;utim, prekid terapije denosumabom povezan je sa zna&#x010D;ajnim ubrzanjem ko&#x0161;tane pregradnje, posljedi&#x010D;nim slabljenjem primarno trabekularne kosti i pove&#x0107;anim rizikom od vertebralnih prijeloma. Rizik prijeloma kralje&#x017E;aka mo&#x017E;e nastupiti vrlo rano nakon prekida terapije i ne mora biti linearan s promjenama BMD-a. (<xref ref-type="bibr" rid="r1"><italic>1</italic></xref>, <xref ref-type="bibr" rid="r68"><italic>68</italic></xref>, <xref ref-type="bibr" rid="r69"><italic>69</italic></xref>) Ovi rizici zahtijevaju pa&#x017E;ljivo planiranje prekida terapije, uz prijelaz na druge terapije kako bi se izbjegao sindrom &#x201E;<italic>rebound</italic>&#x201C; prijeloma. (<xref ref-type="bibr" rid="r67"><italic>67</italic></xref>&#x2013;<xref ref-type="bibr" rid="r69"><italic>69</italic></xref>)</p>
</sec>
<sec>
<title>Anaboli&#x010D;ki lijekovi</title>
<p>Teriparatid je prvi anaboli&#x010D;ki lijek odobren za lije&#x010D;enje osteoporoze, koji pove&#x0107;ava ko&#x0161;tanu mineralnu gusto&#x0107;u i &#x010D;vrsto&#x0107;u kosti. (<xref ref-type="bibr" rid="r1"><italic>1</italic></xref>, <xref ref-type="bibr" rid="r63"><italic>63</italic></xref>) Primjena teriparatida za sada je ograni&#x010D;ena na 24 mjeseca zbog upozorenja o pojavi osteosarkoma &#x0161;takora u pretklini&#x010D;kim ispitivanjima. (<xref ref-type="bibr" rid="r1"><italic>1</italic></xref>, <xref ref-type="bibr" rid="r4"><italic>4</italic></xref>) Me&#x0111;utim, postmarketin&#x0161;ko pra&#x0107;enje tijekom petnaest godina nije pokazalo pove&#x0107;an rizik pojave osteosarkoma u pacijenata lije&#x010D;enih teriparatidom u odnosu na op&#x0107;u populaciju. (<xref ref-type="bibr" rid="r4"><italic>4</italic></xref>) Nakon zavr&#x0161;etka terapije teriparatidom, preporu&#x010D;uje se prijelaz na antiresorptivnu terapiju (naj&#x010D;e&#x0161;&#x0107;e bisfosfonate ili denosumab) da bi se odr&#x017E;ala ko&#x0161;tana gusto&#x0107;a i sprije&#x010D;ilo ubrzano smanjenje ko&#x0161;tane mase koje mo&#x017E;e nastati nakon prekida terapije. (<xref ref-type="bibr" rid="r1"><italic>1</italic></xref>, <xref ref-type="bibr" rid="r4"><italic>4</italic></xref>) Ovaj prijelaz poma&#x017E;e u o&#x010D;uvanju postignutih rezultata i smanjuje rizik od prijeloma. (<xref ref-type="bibr" rid="r1"><italic>1</italic></xref>, <xref ref-type="bibr" rid="r4"><italic>4</italic></xref>)</p>
</sec>
</sec>
<sec sec-type="other5">
<title>Trajanje lije&#x010D;enja osteoporoze</title>
<p>Iako su antiresorptivni lijekovi poput bisfosfonata i denosumaba postali standard u lije&#x010D;enju osteoporoze, nejasni su dokazi o optimalnom trajanju i sigurnosti dugotrajne primjene ovih lijekova. U tom kontekstu, depreskripcija, definirana kao plansko i nadzirano smanjenje ili prekid nepotrebnih lijekova, sve vi&#x0161;e dobiva na va&#x017E;nosti.</p>
<p>Randomizirane studije poput HORIZON-PFT i FLEX ispitivale su u&#x010D;inke prekida terapije bisfosfonatima nakon tri do pet godina i pokazale da mnogi pacijenti mogu sigurno prestati uzimati lijekove bez zna&#x010D;ajnog pove&#x0107;anja rizika od prijeloma. (<xref ref-type="bibr" rid="r71"><italic>71</italic></xref>&#x2013;<xref ref-type="bibr" rid="r73"><italic>73</italic></xref>) Ovaj pristup depreskripciji u lije&#x010D;enju osteoporoze nazivamo &#x201E;<italic>drug holiday</italic>&#x201C; i provodi se nakon tri ili pet godina lije&#x010D;enja, kada se procijeni da je rizik od prijeloma manji od potencijalne &#x0161;tete daljnjeg uzimanja lijekova. (<xref ref-type="bibr" rid="r74"><italic>74</italic></xref>, <xref ref-type="bibr" rid="r75"><italic>75</italic></xref>)</p>
<p>Denosumab se primjenjuje bez unaprijed definiranoga maksimalnog trajanja lije&#x010D;enja. Procjena rizika od prijeloma preporu&#x010D;uje se nakon pet godina terapije, pri &#x010D;emu se kod osoba s visokim rizikom prijeloma lije&#x010D;enje mo&#x017E;e nastaviti do deset godina, a u odabranim slu&#x010D;ajevima, uz redovitu reevaluaciju, i dulje.</p>
<p>Kod osoba s visokim rizikom prijeloma, uklju&#x010D;uju&#x0107;i bolesnike s povije&#x0161;&#x0107;u vertebralnih prijeloma ili izrazito niskim vrijednostima BMD-a, produ&#x017E;ena antiresorptivna terapija mo&#x017E;e biti opravdana, pri &#x010D;emu treba razmotriti primjenu parenteralnih bisfosfonata ili denosumaba. (<xref ref-type="bibr" rid="r70"><italic>70</italic></xref>) U takvim okolnostima depreskripcija mora biti pa&#x017E;ljivo individualizirana, uzimaju&#x0107;i u obzir dob bolesnika, komorbiditete i o&#x010D;ekivani &#x017E;ivotni vijek. (<xref ref-type="bibr" rid="r70"><italic>70</italic></xref>) Depreskripcija u osteoporozi zna&#x010D;i da se terapija primjenjuje samo onoliko dugo koliko je stvarno potrebno, uz planiran prekid i pra&#x0107;enje bolesnika nakon zavr&#x0161;etka lije&#x010D;enja. Na taj na&#x010D;in izbjegava se nepotrebna izlo&#x017E;enost lijekovima i &#x010D;uvaju koristi postignute lije&#x010D;enjem.</p>
</sec>
<sec sec-type="other6">
<title>Plan za prekid farmakolo&#x0161;ke terapije</title>
<p>Bisfosfonati su jedini lijekovi koji se mogu prekinuti bez potrebe za nastavkom druge terapije. (<xref ref-type="bibr" rid="r4"><italic>4</italic></xref>, <xref ref-type="bibr" rid="r63"><italic>63</italic></xref>, <xref ref-type="bibr" rid="r70"><italic>70</italic></xref>)</p>
<p>Nakon prekida terapije denosumabom, lije&#x010D;enje treba nastaviti antiresorptivnim lijekom, naj&#x010D;e&#x0161;&#x0107;e alendronatom ili zoledronatnom kiselinom. (<xref ref-type="bibr" rid="r4"><italic>4</italic></xref>, <xref ref-type="bibr" rid="r63"><italic>63</italic></xref>) Takva terapija bisfosfonatima preporu&#x010D;uje se provoditi najmanje jednu do dvije godine kako bi se sprije&#x010D;ila nagla reaktivacija ko&#x0161;tane pregradnje i pove&#x0107;ani rizik vertebralnih prijeloma (&#x201E;<italic>rebound</italic>&#x201C; fenomen) koji se javlja nakon prekida denosumaba. (<xref ref-type="bibr" rid="r4"><italic>4</italic></xref>, <xref ref-type="bibr" rid="r63"><italic>63</italic></xref>, <xref ref-type="bibr" rid="r67"><italic>67</italic></xref>&#x2013;<xref ref-type="bibr" rid="r69"><italic>69</italic></xref>)</p>
<p>Nakon dvije godine terapije teriparatidom, preporu&#x010D;uje se nastavak lije&#x010D;enja bisfosfonatima ili denosumabom radi o&#x010D;uvanja ste&#x010D;enog porasta ko&#x0161;tane mase. (<xref ref-type="bibr" rid="r1"><italic>1</italic></xref>, <xref ref-type="bibr" rid="r4"><italic>4</italic></xref>, <xref ref-type="bibr" rid="r63"><italic>63</italic></xref>) Bisfosfonat se obi&#x010D;no primjenjuje najmanje dvije godine, dok se denosumab mo&#x017E;e davati dugoro&#x010D;no, uz obvezan prijelaz na bisfosfonat jednu do dvije godine nakon njegova prekida da bi se sprije&#x010D;io <italic>rebound</italic> gubitak kosti. (<xref ref-type="bibr" rid="r1"><italic>1</italic></xref>, <xref ref-type="bibr" rid="r4"><italic>4</italic></xref>, <xref ref-type="bibr" rid="r63"><italic>63</italic></xref>, <xref ref-type="bibr" rid="r76"><italic>76</italic></xref>)</p>
<p>Sekvencijsko lije&#x010D;enje denosumab &#x2192; teriparatid nije preporu&#x010D;eno, jer mo&#x017E;e uzrokovati gubitak gusto&#x0107;e kostiju, posebno u podru&#x010D;ju kuka i kralje&#x017E;nice u prvim mjesecima nakon prelaska. (<xref ref-type="bibr" rid="r77"><italic>77</italic></xref>) Stoga, kada je indicirano, optimalno je lije&#x010D;enje te&#x0161;ke osteoporoze zapo&#x010D;eti najprije anaboli&#x010D;kim lijekom. (<xref ref-type="bibr" rid="r4"><italic>4</italic></xref>)</p>
</sec>
<sec sec-type="other7">
<title>Depreskripcija kod dementnih i nepokretnih starijih osoba u domovima</title>
<p>Depreskripcija, odnosno plansko smanjenje ili ukidanje nepotrebnih lijekova, uklju&#x010D;uju&#x0107;i i lijekove za osteoporozu, ima klju&#x010D;nu ulogu u skrbi za dementne i nepokretne starije osobe smje&#x0161;tene u domovima. (<xref ref-type="bibr" rid="r78"><italic>78</italic></xref>, <xref ref-type="bibr" rid="r79"><italic>79</italic></xref>) Depreskripcija mo&#x017E;e biti opravdana u odabranim klini&#x010D;kim situacijama, osobito kod bolesnika s uznapredovalom demencijom, terminalnim stanjima ili vrlo ograni&#x010D;enim o&#x010D;ekivanim &#x017E;ivotnim vijekom, kada korist lije&#x010D;enja vjerojatno ne nadma&#x0161;uje potencijalne rizike. (<xref ref-type="bibr" rid="r78"><italic>78</italic></xref>) Lijekovi za osteoporozu, kao &#x0161;to su bisfosfonati, mogu izazvati nuspojave poput gastrointestinalnih tegoba, ili veoma rijetko osteonekroze &#x010D;eljusti i atipi&#x010D;nih prijeloma, &#x0161;to mo&#x017E;e biti &#x0161;tetno za osobe s ve&#x0107; oslabljenim zdravljem. (<xref ref-type="bibr" rid="r79"><italic>79</italic></xref>) Ova populacija &#x010D;esto prima vi&#x0161;estruke terapije zbog brojnih kroni&#x010D;nih bolesti, &#x0161;to pove&#x0107;ava rizik od nuspojava, interakcija lijekova i smanjenja kvalitete &#x017E;ivota. (<xref ref-type="bibr" rid="r78"><italic>78</italic></xref>, <xref ref-type="bibr" rid="r79"><italic>79</italic></xref>)</p>
<p>Me&#x0111;utim, sama prisutnost demencije, nepokretnosti ili institucionalizacije ne predstavlja indikaciju za prekid lije&#x010D;enja osteoporoze, budu&#x0107;i da upravo ove skupine bolesnika &#x010D;esto imaju izrazito visok rizik vertebralnih prijeloma, a nefarmakolo&#x0161;ke mjere prevencije prijeloma kod njih su &#x010D;esto ograni&#x010D;ene. Kod starijih osoba s demencijom ili ograni&#x010D;enom pokretljivo&#x0161;&#x0107;u depreskripcija se provodi s posebnim naglaskom na smanjenje nepotrebnih intervencija koje ne pridonose zna&#x010D;ajno produljenju &#x017E;ivota ni njegovoj kvaliteti. (<xref ref-type="bibr" rid="r78"><italic>78</italic></xref>, <xref ref-type="bibr" rid="r79"><italic>79</italic></xref>)</p>
</sec>
<sec sec-type="other8">
<title>Diskusija i zaklju&#x010D;ak</title>
<p>U posljednjem desetlje&#x0107;u sve se vi&#x0161;e nagla&#x0161;ava potreba za promjenom paradigme u pristupu osteoporozi &#x2013; s uskog fokusa na &#x201E;lije&#x010D;enje gusto&#x0107;e kosti&#x201C; prema sveobuhvatnom &#x201E;upravljanju rizikom prijeloma&#x201C;. Iako su antiresorptivni i anaboli&#x010D;ki lijekovi dokazano u&#x010D;inkoviti u smanjenju rizika od prijeloma (<xref ref-type="bibr" rid="r4"><italic>4</italic></xref>), njihova u&#x010D;inkovitost u klini&#x010D;koj praksi ograni&#x010D;ena je ako se istodobno ne prepoznaju i ne adresiraju drugi va&#x017E;ni &#x010D;imbenici rizika, osobito padovi, komorbiditeti i polifarmacija.</p>
<p>Osteoporoza ostaje zna&#x010D;ajan javnozdravstveni problem zbog porasta broja prijeloma uslijed starenja populacije. Ekonomski teret prijeloma, osobito prijeloma kuka, vi&#x0161;estruko nadma&#x0161;uje tro&#x0161;kove farmakolo&#x0161;ke prevencije i rehabilitacije, &#x0161;to dodatno nagla&#x0161;ava potrebu za ranom identifikacijom osoba s pove&#x0107;anim rizikom te za integriranim modelima skrbi. (<xref ref-type="bibr" rid="r80"><italic>80</italic></xref>) Sustavno uklju&#x010D;ivanje alata za procjenu rizika prijeloma, poput FRAX-a i TBS-a, u svakodnevnu klini&#x010D;ku praksu i u edukaciju lije&#x010D;nika primarne zdravstvene za&#x0161;tite moglo bi znatno pobolj&#x0161;ati prepoznavanje bolesnika kojima prijeti prijelom, neovisno o njihovom BMD-u. (<xref ref-type="bibr" rid="r7"><italic>7</italic></xref>, <xref ref-type="bibr" rid="r8"><italic>8</italic></xref>)</p>
<p>Unato&#x010D; dostupnosti u&#x010D;inkovitih lijekova, terapijska inercija ostaje jedan od najve&#x0107;ih izazova u lije&#x010D;enju osteoporoze &#x2013; ve&#x0107;ina bolesnika s osteoporoti&#x010D;nim prijelomom i dalje ne zapo&#x010D;inje farmakolo&#x0161;ko lije&#x010D;enje. Uvo&#x0111;enje strukturiranih sustava poput <italic>Fracture Liaison Services</italic> (FLS) pokazalo je znatno smanjenje rizika ponovnih prijeloma i pove&#x0107;anje stope zapo&#x010D;injanja terapije te bi trebalo postati sastavni dio zdravstvenih sustava. (<xref ref-type="bibr" rid="r1"><italic>1</italic></xref>, <xref ref-type="bibr" rid="r4"><italic>4</italic></xref>) Tradicionalni pristup, temeljen prvenstveno na mjerenju mineralne gusto&#x0107;e kosti i farmakolo&#x0161;kom lije&#x010D;enju, pokazao je ograni&#x010D;enja jer BMD ne odra&#x017E;ava sve aspekte &#x010D;vrsto&#x0107;e i otpornosti kosti. Stoga je nu&#x017E;no pro&#x0161;iriti procjenu rizika na kvalitetu kosti, u&#x010D;estalost i okolnosti padova, ranije prijelome te individualne karakteristike bolesnika. Novi terapijski koncepti, poput sekvencijske i kombinirane terapije (primjena anaboli&#x010D;ke terapije pra&#x0107;ene antiresorptivnom), (<xref ref-type="bibr" rid="r63"><italic>63</italic></xref>) pru&#x017E;aju bolje rezultate u bolesnika s te&#x0161;kom osteoporozom i vi&#x0161;estrukim prijelomima, iako njihova primjena u praksi i dalje ovisi o dostupnosti i cijeni.</p>
<p>Prevencija prijeloma mora uklju&#x010D;ivati kombinaciju nefarmakolo&#x0161;kih i farmakolo&#x0161;kih strategija. Optimizacija unosa kalcija, vitamina D i proteina, redovita tjelesna aktivnost i prilagodba &#x017E;ivotnog okru&#x017E;enja predstavljaju osnovu svake intervencije. (<xref ref-type="bibr" rid="r54"><italic>54</italic></xref>, <xref ref-type="bibr" rid="r55"><italic>55</italic></xref>) Farmakolo&#x0161;ko lije&#x010D;enje, koje obuhva&#x0107;a antiresorptivne i anaboli&#x010D;ke lijekove, treba individualizirati s obzirom na dob, rizik prijeloma, o&#x010D;ekivani &#x017E;ivotni vijek i komorbiditete, uz redovitu reevaluaciju i planiranje trajanja terapije. (<xref ref-type="bibr" rid="r4"><italic>4</italic></xref>, <xref ref-type="bibr" rid="r63"><italic>63</italic></xref>)</p>
<p>Depreskripcija &#x2013; plansko i racionalno ukidanje lijekova &#x2013; postaje sve va&#x017E;nijim konceptom u skrbi za starije, kognitivno o&#x0161;te&#x0107;ene i nepokretne bolesnike. (<xref ref-type="bibr" rid="r78"><italic>78</italic></xref>) U takvim okolnostima cilj lije&#x010D;enja nije nu&#x017E;no dugoro&#x010D;na prevencija prijeloma, ve&#x0107; o&#x010D;uvanje kvalitete &#x017E;ivota i izbjegavanje nuspojava terapije. Pristup lije&#x010D;enju osteoporoze stoga mora biti dinami&#x010D;an, s jasno definiranim ciljevima, procjenom koristi i rizika te redovitom revizijom terapije.</p>
<p>U novije vrijeme istra&#x017E;uje se i uloga digitalnih alata i umjetne inteligencije u predvi&#x0111;anju rizika prijeloma, &#x0161;to bi u budu&#x0107;nosti moglo omogu&#x0107;iti jo&#x0161; precizniju individualizaciju terapije integriranjem laboratorijskih, klini&#x010D;kih i slikovnih podataka. (<xref ref-type="bibr" rid="r81"><italic>81</italic></xref>)</p>
<p>Holisti&#x010D;ki pristup koji objedinjuje promjene &#x017E;ivotnog stila, prevenciju padova, optimizaciju prehrane, procjenu kvalitete kosti i individualiziranu farmakoterapiju klju&#x010D;an je za u&#x010D;inkovito smanjenje rizika od prijeloma i pobolj&#x0161;anje ishoda lije&#x010D;enja osteoporoze. Promjena paradigme od &#x201E;lije&#x010D;enja gusto&#x0107;e kosti&#x201C; prema &#x201E;prevenciji prijeloma&#x201C; zahtijeva &#x0161;iru klini&#x010D;ku i sustavnu promjenu &#x2013; od dijagnosti&#x010D;kih kriterija i propisivanja lijekova do edukacije pacijenata i javnozdravstvenih intervencija. Samo takav integrirani, racionalni i pacijentu usmjeren pristup mo&#x017E;e dugoro&#x010D;no smanjiti u&#x010D;estalost prijeloma i pobolj&#x0161;ati kvalitetu &#x017E;ivota starije populacije.</p>
</sec>
</body>
<back>
<fn-group>
<fn fn-type="conflict">
<p content-type="fn-title">INFORMACIJE O SUKOBU INTERESA</p>
<p>Autori nisu deklarirali sukob interesa relevantan za ovaj rad.</p>
</fn>
<fn fn-type="financial-disclosure">
<p content-type="fn-title">INFORMACIJA O FINANCIRANJU</p>
<p>Za ovaj &#x010D;lanak nisu primljena financijska sredstva.</p>
</fn>
</fn-group>
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