{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,19]],"date-time":"2026-06-19T23:05:45Z","timestamp":1781910345415,"version":"3.54.5"},"reference-count":35,"publisher":"Public Library of Science (PLoS)","issue":"5","license":[{"start":{"date-parts":[[2021,5,27]],"date-time":"2021-05-27T00:00:00Z","timestamp":1622073600000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["www.plosone.org"],"crossmark-restriction":false},"short-container-title":["PLoS ONE"],"abstract":"<jats:sec id=\"sec001\">\n<jats:title>Aim<\/jats:title>\n<jats:p>How reduced femoral neck anteversion alters the distribution of pressure and contact area in Hip Resurfacing Arthroplasty (HRA) remains unclear. The purpose of this study was to quantitatively describe the biomechanical implication of different femoral neck version angles on HRA using a finite element analysis.<\/jats:p>\n<\/jats:sec>\n<jats:sec id=\"sec002\">\n<jats:title>Materials and methods<\/jats:title>\n<jats:p>A total of sixty models were constructed to assess the effect of different femoral neck version angles on three different functional loads: 0\u00b0of hip flexion, 45\u00b0of hip flexion, and 90\u00b0 of hip flexion. Femoral version was varied between 30\u00b0 of anteversion to 30\u00b0 of retroversion. All models were tested with the acetabular cup in four different positions: (1) 40\u00b0\/15\u00b0 (inclination\/version), (2) 40\u00b0\/25\u00b0, (3) 50\u00b0\/15\u00b0, and (4) 50\u00b0\/25\u00b0. Differences in range of motion due to presence of impingement, joint contact pressure, and joint contact area with different femoral versions and acetabular cup positions were calculated.<\/jats:p>\n<\/jats:sec>\n<jats:sec id=\"sec003\">\n<jats:title>Results<\/jats:title>\n<jats:p>Impingement was found to be most significant with the femur in 30\u00b0 of retroversion, regardless of acetabular cup position. Anterior hip impingement occurred earlier during hip flexion as the femur was progressively retroverted. Impingement was reduced in all models by increasing acetabular cup inclination and anteversion, yet this consequentially led to higher contact pressures. At 90\u00b0 of hip flexion, contact pressures and contact areas were inversely related and showed most notable change with 30\u00b0 of femoral retroversion. In this model, the contact area migrated towards the anterior implant-bone interface along the femoral neck.<\/jats:p>\n<\/jats:sec>\n<jats:sec id=\"sec004\">\n<jats:title>Conclusion<\/jats:title>\n<jats:p>Femoral retroversion in HRA influences impingement and increases joint contact pressure most when the hip is loaded in flexion. Increasing acetabular inclination decreases the area of impingement but doing so causes a reciprocal increase in joint contact pressure. It may be advisable to study femoral neck version pre-operatively to better choose hip resurfacing arthroplasty candidates.<\/jats:p>\n<\/jats:sec>","DOI":"10.1371\/journal.pone.0252435","type":"journal-article","created":{"date-parts":[[2021,5,27]],"date-time":"2021-05-27T18:48:33Z","timestamp":1622141313000},"page":"e0252435","update-policy":"https:\/\/doi.org\/10.1371\/journal.pone.corrections_policy","source":"Crossref","is-referenced-by-count":5,"title":["Computational modelling of hip resurfacing arthroplasty investigating the effect of femoral version on hip 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