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Radiology retrospectively reviewed bilateral knee X-rays from 1712 osteoarthritis patients and 2304 controls, recording fabella presence and laterality. Results: Fabella occurred in 18.4% of dissected knees; radiology showed 36.5% overall with no significant link to osteoarthritis and no between-group lateralization differences.",{"@graph":14,"@context":73},[15,34,56],{"@type":16,"itemListElement":17},"BreadcrumbList",[18,23,27,31],{"item":19,"name":20,"@type":21,"position":22},"https://docshare.wps.com","Home","ListItem",1,{"item":24,"name":25,"@type":21,"position":26},"https://docshare.wps.com/document/","Document",2,{"item":28,"name":29,"@type":21,"position":30},"https://docshare.wps.com/document/healthcare/","Healthcare",3,{"item":32,"name":10,"@type":21,"position":33},"https://docshare.wps.com/document/prevalence-and-morphometry-of-the-fabella-in-cadaveric-and-radiological-studies-is-there-a-link-to-knee-osteoarthritis/440033/",4,{"url":32,"name":10,"@type":35,"image":36,"author":41,"headline":10,"publisher":44,"fileFormat":47,"inLanguage":8,"description":12,"dateModified":48,"datePublished":49,"encodingFormat":47,"isAccessibleForFree":50,"interactionStatistic":51},"DigitalDocument",{"url":37,"@type":38,"width":39,"height":40},"https://docshare.wps.com/thumbnails/prevalence-and-morphometry-of-the-fabella-in-cadaveric-and-radiological-studies-is-there-a-link-to-knee-osteoarthritis/440033.png","ImageObject",300,407,{"name":42,"@type":43},"Kurz","Person",{"url":19,"name":45,"@type":46},"DocShare","Organization","application/pdf","2026-10-30","2026-09-29",true,{"@type":52,"interactionType":53,"userInteractionCount":55},"InteractionCounter",{"@type":54},"ViewAction",11,{"@type":57,"mainEntity":58},"FAQPage",[59,65,69],{"name":60,"@type":61,"acceptedAnswer":62},"What was the main objective of the study?","Question",{"text":63,"@type":64},"The study examined fabella morphometric features in cadaveric specimens and evaluated the fabella’s prevalence and potential association with knee osteoarthritis using radiological analysis.","Answer",{"name":66,"@type":61,"acceptedAnswer":67},"How were fabella measurements and prevalence assessed?",{"text":68,"@type":64},"In the cadaveric part, 65 knees from 32 cadavers and 3 leg specimens were dissected and fabellas were measured with histological analysis. In radiology, bilateral knee X-rays from 1712 osteoarthritis patients and 2304 controls were reviewed to record presence and laterality.",{"name":70,"@type":61,"acceptedAnswer":71},"Did the presence of the fabella associate with knee osteoarthritis?",{"text":72,"@type":64},"No statistically significant association was found between fabella presence and osteoarthritis (p > 0.05) in the radiological study.","https://schema.org",{"og:url":32,"og:type":75,"og:title":10,"og:site_name":45,"og:description":12},"article",{"robots":77,"canonical":32},"index,follow",{"doc_id":79,"site_id":7},440033,1790765455,{"code":4,"msg":82,"data":83},"success",[84,88,92,96,101,106,110,115,120,123,127],{"id":22,"doc_module":4,"doc_module_name":25,"category_name":85,"show_sort_weight":86,"slug":87},"Story & Novel",90,"story-novel",{"id":26,"doc_module":4,"doc_module_name":25,"category_name":89,"show_sort_weight":90,"slug":91},"Literature",80,"literature",{"id":33,"doc_module":4,"doc_module_name":25,"category_name":93,"show_sort_weight":94,"slug":95},"Exam",70,"exam",{"id":97,"doc_module":4,"doc_module_name":25,"category_name":98,"show_sort_weight":99,"slug":100},5,"Comic",60,"comic",{"id":102,"doc_module":4,"doc_module_name":25,"category_name":103,"show_sort_weight":104,"slug":105},6,"Technology",50,"technology",{"id":107,"doc_module":4,"doc_module_name":25,"category_name":29,"show_sort_weight":108,"slug":109},7,40,"healthcare",{"id":111,"doc_module":4,"doc_module_name":25,"category_name":112,"show_sort_weight":113,"slug":114},8,"Research & Report",30,"research-report",{"id":116,"doc_module":4,"doc_module_name":25,"category_name":117,"show_sort_weight":118,"slug":119},9,"Religion & Spirituality",20,"religion-spirituality",{"id":118,"doc_module":4,"doc_module_name":25,"category_name":121,"show_sort_weight":118,"slug":122},"World Cup","world-cup",{"id":124,"doc_module":4,"doc_module_name":25,"category_name":125,"show_sort_weight":124,"slug":126},10,"Lifestyle","lifestyle",{"id":128,"doc_module":4,"doc_module_name":25,"category_name":129,"show_sort_weight":97,"slug":130},19,"General","general",{"code":4,"msg":82,"data":132},{"doc_id":79,"user_id":133,"nickname":42,"user_avatar":134,"doc_module":4,"category_id":107,"category_name":29,"doc_title":10,"doc_description":12,"doc_content":135,"file_id":136,"file_url":137,"file_type":138,"file_size":139,"view_count":55,"is_deleted":4,"is_public":22,"is_downloadable":22,"audit_status":22,"page_count":140,"language":141,"language_code":8,"site_id":7,"html_lang":8,"table_of_contents":142,"faqs":143,"seo_title":144,"seo_description":12,"update_tm":145,"read_time":113,"preview_page_count":4},2336478945635,"https://ap-avatar.wpscdn.com/davatar_6f874abed73319feea01a86fa6f0fab8","OPEN ACCESS  \nCitation: Yolaçan E, Ercıktı N, Baykal B, Bozlar U, Kocabıyık N, Güner MA, et al. (2026) Prevalence and morphometry of the fabella in cadaveric and radiological studies: Is there a link to knee osteoarthritis? PLoS One 21(1): e0340399 .  \n[https://doi.org/10.1371/journal.pone.0340399](https://doi.org/10.1371/journal.pone.0340399)  \nEditor: Srinivasa Rao Sirasanagandla, Sultan Qaboos University College of Medicine and Health Science, OMAN  \nReceived: September 23, 2025  \nAccepted: December 20, 2025  \nPublished: January 5, 2026  \nPeer Review History: PLOS recognizes the benefits of transparency in the peer review process; therefore, we enable the publication of all of the content of peer review and author responses alongside final, published articles. The editorial history of this article is available here: [https://doi.org/10.1371/journal](https://doi.org/10.1371/journal). pone.0340399  \nCopyright: © 2026 Yolaçan et al. This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution,  \nRESEARCH ARTICLE  \nPrevalence and morphometry of the fabella incadaveric and radiological studies: Is there a link to knee osteoarthritis?  \nEbru Yolaçan1*, Nurcan Ercıktı2, Barış Baykal3, Uğur Bozlar4, Necdet Kocabıyık2, Mehmet Ali Güner2, Necati Salman2, Ayşe Özdemir3, Mislina Utlu2, Laçin Ramazanlı5  \n1 Department of Anatomy, Samsun University Faculty of Medicine, Samsun, Türkiye, 2 Department of Anatomy, University of Health Sciences Gülhane Faculty of Medicine, Ankara, Türkiye, 3 Department of Histology and Embryology, University of Health Sciences Gülhane Faculty of Medicine, Ankara, Türkiye, 4 Gülhane Faculty of Medicine, Department of Radiology, University of Health Sciences, Ankara, Türkiye, 5 Department of Radiology, Azerbaijan Clinical Medical Center, Baku, Azerbaijan  \n* [yolacanebru@gmail.com](yolacanebru@gmail.com)  \nAbstract  \nObjective  \nTo investigate the morphometric features of the fabella in cadaveric specimens and evaluate its prevalence and potential association with knee osteoarthritis through radiological analysis.  \nMethods  \nIn the cadaveric study, 65 knees from 32 cadavers and 3 leg specimens were dissected. Fabellas were measured and analyzed histologically. In the radiological study, bilateral knee X-rays of 1712 patients with osteoarthritis and 2304 control subjects were retrospectively reviewed. The presence and laterality of the fabella were recorded.  \nResults  \nFabella was detected in 18.4% of dissected knees. No significant sex-based differences were found in morphometric measurements (p > 0.05) . In the radiological study, the overall prevalence was 36.5%(37 .6% in patients, 35.7% in controls), with no statistically significant association between fabella presence and osteoarthritis (p > 0.05) . Lateralization patterns did not differ between groups.  \nConclusion  \nThis study provides the first morphometric data on fabella in Turkish cadavers and suggests no significant relationship between fabella presence and knee osteoarthritis.  \nPLOS One | [https://doi.org/10.1371/journal.pone.0340399](https://doi.org/10.1371/journal.pone.0340399) January 5, 2026 1 / 12  \nand reproduction in any medium, provided the original author and source are credited.  \nData availability statement: All relevant anonymized data (available in the Supporting  Information files: Cadaver.xlsx, 2020-2021 prevalence control.xlsx, and 2020-2021 prevalence patient.xlsx) are provided.  \nFunding: The budget of this research was covered by the Scientific Research Projects Coordination Unit of the University of Health Sciences within the scope of the project numbered 2023/022 . The funders had no role in study design, data collection and analysis, decision to publish, or preparation of the manuscript.  \nCompeting interests: The authors have declared that no competing interests exist.  \nWhile fabella is a common anatomical variant, its clinical relevan","cbCaiiSZNncm6uCc","https://ap.wps.com/l/cbCaiiSZNncm6uCc","pdf",1457229,12,"English","# Abstract\n## Objective\n## Methods\n## Results\n## Conclusion\n# Introduction","[{\"question\":\"What was the main objective of the study?\",\"answer\":\"The study examined fabella morphometric features in cadaveric specimens and evaluated the fabella’s prevalence and potential association with knee osteoarthritis using radiological analysis.\"},{\"question\":\"How were fabella measurements and prevalence assessed?\",\"answer\":\"In the cadaveric part, 65 knees from 32 cadavers and 3 leg specimens were dissected and fabellas were measured with histological analysis. In radiology, bilateral knee X-rays from 1712 osteoarthritis patients and 2304 controls were reviewed to record presence and laterality.\"},{\"question\":\"Did the presence of the fabella associate with knee osteoarthritis?\",\"answer\":\"No statistically significant association was found between fabella presence and osteoarthritis (p \\u003e 0.05) in the radiological study.\"}]","Prevalence and morphometry of the fabella in cadaveric and radiological studies - Is there a link to knee osteoarthritis? | PDF",1790690848]