Female Hip Sex Motion

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Volume 29, Issue 3, March 2014, Pages 640-647
Relative risk of impingement and joint instability during sexual activities after total hip arthroplasty (THA) has never been objectively investigated. Hip range of motion necessary to perform sexual positions is unknown. A motion capture study with two volunteers was performed. 12 common sexual positions were captured and relevant hip joint kinematics calculated. The recorded data were applied to prosthetic hip 3D models to evaluate impingement and joint instability during motion. To explore the effect of acetabular component positioning, nine acetabular cup positions were tested. Four sexual positions for women requiring intensive flexion (> 95°) caused prosthetic impingements (associated with posterior instability) at 6 cup positions. Bony impingements (associated with anterior instability) occurred during one sexual position for men requiring high degree of external rotation (> 40°) combined with extension and adduction at all cup positions. This study hence indicates that some sexual positions could be potentially at risk after THA, particularly for women.
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The Conflict of Interest statement associated with this article can be found at http://dx.doi.org/10.1016/j.arth.2013.07.043.
Copyright © 2014 Elsevier Inc. All rights reserved.
The Journal of Arthroplasty, Volume 29, Issue 3, 2014, pp. 504-509
The Journal of Arthroplasty, Volume 29, Issue 3, 2014, pp. 525-529
The Journal of Arthroplasty, Volume 29, Issue 3, 2014, pp. 590-595
2020, Journal of Orthopaedic Science
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Female Hip Sex Motion