Influence of the femoral offset on the muscles passive resistance in total hip arthroplasty.
<h4>Background</h4>Soft tissue tension is treated as a crucial factor influencing the post-THA dislocation. The femoral offset is regarded as one of the major parameters responsible for the stabilization of the prosthesis. It is unclear which soft tissue is mostly affected by the offset...
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Public Library of Science (PLoS)
2021-01-01
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| Series: | PLoS ONE |
| Online Access: | https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0250397&type=printable |
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| author | Stanisław Burzyński Agnieszka Sabik Wojciech Witkowski Piotr Łuczkiewicz |
| author_facet | Stanisław Burzyński Agnieszka Sabik Wojciech Witkowski Piotr Łuczkiewicz |
| author_sort | Stanisław Burzyński |
| collection | DOAJ |
| description | <h4>Background</h4>Soft tissue tension is treated as a crucial factor influencing the post-THA dislocation. The femoral offset is regarded as one of the major parameters responsible for the stabilization of the prosthesis. It is unclear which soft tissue is mostly affected by the offset changes.<h4>Methods</h4>A finite element model of the hip was created. The model comprised muscles, bones, a stem, the acetabular component and a liner. The muscles were modelled as a Hill-type musculo-tendon nonlinear springs. Nonlinear analyses of the hip flexion and internal rotation were performed for the two values of the femoral stem offset.<h4>Results</h4>We observed that the quadratus femoris and gluteus medius produce the largest resisting moment opposing the external load excreted by the surgeon during the intraoperative hip dislocation test.<h4>Conclusions</h4>An increased femoral offset increases the stretching of the quadratus femoris muscle significantly and provides the growth of its initial passive force. This muscle serves as a stiff band, providing stabilisation of the hip prosthesis, measured during the simulated intraoperative test. |
| format | Article |
| id | doaj-art-b8296b9e3ff84590a42186f0d8d6b28c |
| institution | DOAJ |
| issn | 1932-6203 |
| language | English |
| publishDate | 2021-01-01 |
| publisher | Public Library of Science (PLoS) |
| record_format | Article |
| series | PLoS ONE |
| spelling | doaj-art-b8296b9e3ff84590a42186f0d8d6b28c2025-08-20T02:55:28ZengPublic Library of Science (PLoS)PLoS ONE1932-62032021-01-01165e025039710.1371/journal.pone.0250397Influence of the femoral offset on the muscles passive resistance in total hip arthroplasty.Stanisław BurzyńskiAgnieszka SabikWojciech WitkowskiPiotr Łuczkiewicz<h4>Background</h4>Soft tissue tension is treated as a crucial factor influencing the post-THA dislocation. The femoral offset is regarded as one of the major parameters responsible for the stabilization of the prosthesis. It is unclear which soft tissue is mostly affected by the offset changes.<h4>Methods</h4>A finite element model of the hip was created. The model comprised muscles, bones, a stem, the acetabular component and a liner. The muscles were modelled as a Hill-type musculo-tendon nonlinear springs. Nonlinear analyses of the hip flexion and internal rotation were performed for the two values of the femoral stem offset.<h4>Results</h4>We observed that the quadratus femoris and gluteus medius produce the largest resisting moment opposing the external load excreted by the surgeon during the intraoperative hip dislocation test.<h4>Conclusions</h4>An increased femoral offset increases the stretching of the quadratus femoris muscle significantly and provides the growth of its initial passive force. This muscle serves as a stiff band, providing stabilisation of the hip prosthesis, measured during the simulated intraoperative test.https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0250397&type=printable |
| spellingShingle | Stanisław Burzyński Agnieszka Sabik Wojciech Witkowski Piotr Łuczkiewicz Influence of the femoral offset on the muscles passive resistance in total hip arthroplasty. PLoS ONE |
| title | Influence of the femoral offset on the muscles passive resistance in total hip arthroplasty. |
| title_full | Influence of the femoral offset on the muscles passive resistance in total hip arthroplasty. |
| title_fullStr | Influence of the femoral offset on the muscles passive resistance in total hip arthroplasty. |
| title_full_unstemmed | Influence of the femoral offset on the muscles passive resistance in total hip arthroplasty. |
| title_short | Influence of the femoral offset on the muscles passive resistance in total hip arthroplasty. |
| title_sort | influence of the femoral offset on the muscles passive resistance in total hip arthroplasty |
| url | https://journals.plos.org/plosone/article/file?id=10.1371/journal.pone.0250397&type=printable |
| work_keys_str_mv | AT stanisławburzynski influenceofthefemoraloffsetonthemusclespassiveresistanceintotalhiparthroplasty AT agnieszkasabik influenceofthefemoraloffsetonthemusclespassiveresistanceintotalhiparthroplasty AT wojciechwitkowski influenceofthefemoraloffsetonthemusclespassiveresistanceintotalhiparthroplasty AT piotrłuczkiewicz influenceofthefemoraloffsetonthemusclespassiveresistanceintotalhiparthroplasty |