{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,22]],"date-time":"2026-01-22T17:08:14Z","timestamp":1769101694995,"version":"3.49.0"},"reference-count":16,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2025,4,3]],"date-time":"2025-04-03T00:00:00Z","timestamp":1743638400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["JCM"],"abstract":"<jats:p>Background: Variations in femoral version are increasingly recognized as contributing factors to the development of symptomatic femoroacetabular impingement (FAI) and ischiofemoral impingement (IFI). Despite having implications for both hip arthroplasty and hip preservation surgery, functional femoral version (FFV) and overall limb torsion (OLT) are understudied. This study was conducted with the primary aim of defining and measuring FFV as a function of OLT. Methods: A cohort of 106 patients scheduled for primary hip arthroplasty underwent detailed retrospective assessment through CT and EOS imaging. Femoral torsion, transmalleolar axis, tibial torsion, trochanteric station and limb torsion were measured. The trochanteric station distance was also defined on both CT as well as on the lateral standing EOS. Statistical analyses examined the relationships between FFV, OLT, and other measurements. Results: Findings indicate a strong correlation between OLT and FFV. Agreement between CT and EOS imaging for trochanteric station was 0.88. Conclusions: The study reveals that OLT offers a more comprehensive assessment of impingement risk than anatomical femoral version alone. As OLT correlates with FFV, it highlights the role of axial limb alignment in hip joint biomechanics. Understanding the interplay between FFV and OLT can guide more individualized surgical techniques, potentially improving patient outcomes.<\/jats:p>","DOI":"10.3390\/jcm14072448","type":"journal-article","created":{"date-parts":[[2025,4,4]],"date-time":"2025-04-04T03:36:45Z","timestamp":1743737805000},"page":"2448","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":1,"title":["The Effect of Overall Limb Torsion on Functional Femoral Version and Its Functional and Biomechanical Implications on Lower Limb Axial Anatomy: A Study on CT and EOS Imaging"],"prefix":"10.3390","volume":"14","author":[{"ORCID":"https:\/\/orcid.org\/0009-0009-7694-6189","authenticated-orcid":false,"given":"Lo\u00efc","family":"Vercruysse","sequence":"first","affiliation":[{"name":"Sir Charles Gairdner Hospital, Perth, WA 6009, Australia"},{"name":"Department of Orthopaedic Surgery, KU Leuvern University Hospitals Leuven, 3000 Leuven, Belgium"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-6075-0423","authenticated-orcid":false,"given":"Michele","family":"Palazzuolo","sequence":"additional","affiliation":[{"name":"Sir Charles Gairdner Hospital, Perth, WA 6009, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5584-2796","authenticated-orcid":false,"given":"Riza","family":"Gultekin","sequence":"additional","affiliation":[{"name":"Sir Charles Gairdner Hospital, Perth, WA 6009, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2960-5612","authenticated-orcid":false,"given":"Lachlan","family":"Milne","sequence":"additional","affiliation":[{"name":"Sir Charles Gairdner Hospital, Perth, WA 6009, Australia"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2025,4,3]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"S57","DOI":"10.1016\/j.arth.2019.01.012","article-title":"A Preoperative Workup of a \u201cHip-Spine\u201d Total Hip Arthroplasty Patient: A Simplified Approach to a Complex Problem","volume":"34","author":"Luthringer","year":"2019","journal-title":"J. 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Res."},{"key":"ref_6","doi-asserted-by":"crossref","first-page":"152","DOI":"10.1016\/j.arth.2024.07.027","article-title":"How Do Changes in Femoral Anteversion Impact Femoral Rotation and Anterior Offset After Total Hip Arthroplasty?","volume":"40","author":"Dennis","year":"2025","journal-title":"J. Arthroplast."},{"key":"ref_7","doi-asserted-by":"crossref","first-page":"281","DOI":"10.1177\/1120700019848088","article-title":"Variation in femoral anteversion in patients requiring total hip replacement","volume":"30","author":"Pierrepont","year":"2020","journal-title":"HIP Int."},{"key":"ref_8","doi-asserted-by":"crossref","first-page":"2825","DOI":"10.1007\/s00167-021-06643-3","article-title":"Over one third of patients with symptomatic femoroacetabular impingement display femoral or acetabular version abnormalities","volume":"29","author":"Arshad","year":"2021","journal-title":"Knee Surg. Sports Traumatol. 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Sports Med."},{"key":"ref_15","doi-asserted-by":"crossref","first-page":"948","DOI":"10.1177\/02841851211021044","article-title":"MRI findings of ischiofemoral impingement after total hip arthroplasty are associated with increased femoral antetorsion","volume":"63","author":"Fischer","year":"2022","journal-title":"Acta Radiol."},{"key":"ref_16","first-page":"e23.00072","article-title":"Signficant Femoral Version Abnormalities and Patient-Reported Quality of Life","volume":"7","author":"Greenstein","year":"2023","journal-title":"J. Am. Acad. Orthop. Surg. Glob. Res. Rev."}],"container-title":["Journal of Clinical Medicine"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.mdpi.com\/2077-0383\/14\/7\/2448\/pdf","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,10,9]],"date-time":"2025-10-09T17:09:24Z","timestamp":1760029764000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.mdpi.com\/2077-0383\/14\/7\/2448"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025,4,3]]},"references-count":16,"journal-issue":{"issue":"7","published-online":{"date-parts":[[2025,4]]}},"alternative-id":["jcm14072448"],"URL":"https:\/\/doi.org\/10.3390\/jcm14072448","relation":{},"ISSN":["2077-0383"],"issn-type":[{"value":"2077-0383","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025,4,3]]}}}