Effect of hip joint angle at seat-off on hip joint contact force during sit-to-stand movement: a computer simulation study
Abstract Background Sit-to-stand movements are a necessary part of daily life, and excessive mechanical stress on the articular cartilage has been reported to encourage the progression of osteoarthritis. Although a change in hip joint angle at seat-off may affect hip joint contact force during a sit...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
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BMC
2018-11-01
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| Series: | BioMedical Engineering OnLine |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1186/s12938-018-0610-5 |
| _version_ | 1818252018886639616 |
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| author | Takuma Inai Tomoya Takabayashi Mutsuaki Edama Masayoshi Kubo |
| author_facet | Takuma Inai Tomoya Takabayashi Mutsuaki Edama Masayoshi Kubo |
| author_sort | Takuma Inai |
| collection | DOAJ |
| description | Abstract Background Sit-to-stand movements are a necessary part of daily life, and excessive mechanical stress on the articular cartilage has been reported to encourage the progression of osteoarthritis. Although a change in hip joint angle at seat-off may affect hip joint contact force during a sit-to-stand movement, the effect is unclear. This study aimed to examine the effect of the hip joint angle at seat-off on the hip joint contact force during a sit-to-stand movement by using a computer simulation. Methods A musculoskeletal model was created for the computer simulation, and eight muscles were attached to each lower limb. Various sit-to-stand movements were generated using parameters (e.g., seat height and time from seat-off to standing posture) reported by previous studies. The hip joint contact force for each sit-to-stand movement was calculated. Furthermore, the effect of the hip joint angle at seat-off on the hip joint contact force during the sit-to-stand movement was examined. In this study, as the changes to the musculoskeletal model parameters affect the hip joint contact force, a sensitivity analysis was conducted. Results and conclusions The hip joint contact force during the sit-to-stand movement increased approximately linearly as the hip flexion angle at the seat-off increased. Moreover, the normal sit-to-stand movement and the sit-to-stand movement yielding a minimum hip joint contact force were approximately equivalent. The effect of the changes to the musculoskeletal model parameters on the main findings of this study was minimal. Thus, the main findings are robust and may help prevent the progression of hip osteoarthritis by decreasing mechanical stress, which will be explored in future studies. |
| first_indexed | 2024-12-12T16:17:31Z |
| format | Article |
| id | doaj.art-6ec042beb1a1460181d96429ffd0de8b |
| institution | Directory Open Access Journal |
| issn | 1475-925X |
| language | English |
| last_indexed | 2024-12-12T16:17:31Z |
| publishDate | 2018-11-01 |
| publisher | BMC |
| record_format | Article |
| series | BioMedical Engineering OnLine |
| spelling | doaj.art-6ec042beb1a1460181d96429ffd0de8b2022-12-22T00:19:04ZengBMCBioMedical Engineering OnLine1475-925X2018-11-0117111410.1186/s12938-018-0610-5Effect of hip joint angle at seat-off on hip joint contact force during sit-to-stand movement: a computer simulation studyTakuma Inai0Tomoya Takabayashi1Mutsuaki Edama2Masayoshi Kubo3Institute for Human Movement and Medical Sciences, Niigata University of Health and WelfareInstitute for Human Movement and Medical Sciences, Niigata University of Health and WelfareInstitute for Human Movement and Medical Sciences, Niigata University of Health and WelfareInstitute for Human Movement and Medical Sciences, Niigata University of Health and WelfareAbstract Background Sit-to-stand movements are a necessary part of daily life, and excessive mechanical stress on the articular cartilage has been reported to encourage the progression of osteoarthritis. Although a change in hip joint angle at seat-off may affect hip joint contact force during a sit-to-stand movement, the effect is unclear. This study aimed to examine the effect of the hip joint angle at seat-off on the hip joint contact force during a sit-to-stand movement by using a computer simulation. Methods A musculoskeletal model was created for the computer simulation, and eight muscles were attached to each lower limb. Various sit-to-stand movements were generated using parameters (e.g., seat height and time from seat-off to standing posture) reported by previous studies. The hip joint contact force for each sit-to-stand movement was calculated. Furthermore, the effect of the hip joint angle at seat-off on the hip joint contact force during the sit-to-stand movement was examined. In this study, as the changes to the musculoskeletal model parameters affect the hip joint contact force, a sensitivity analysis was conducted. Results and conclusions The hip joint contact force during the sit-to-stand movement increased approximately linearly as the hip flexion angle at the seat-off increased. Moreover, the normal sit-to-stand movement and the sit-to-stand movement yielding a minimum hip joint contact force were approximately equivalent. The effect of the changes to the musculoskeletal model parameters on the main findings of this study was minimal. Thus, the main findings are robust and may help prevent the progression of hip osteoarthritis by decreasing mechanical stress, which will be explored in future studies.http://link.springer.com/article/10.1186/s12938-018-0610-5Sit-to-stand movementHip joint contact forceHip joint angleSeat-off |
| spellingShingle | Takuma Inai Tomoya Takabayashi Mutsuaki Edama Masayoshi Kubo Effect of hip joint angle at seat-off on hip joint contact force during sit-to-stand movement: a computer simulation study BioMedical Engineering OnLine Sit-to-stand movement Hip joint contact force Hip joint angle Seat-off |
| title | Effect of hip joint angle at seat-off on hip joint contact force during sit-to-stand movement: a computer simulation study |
| title_full | Effect of hip joint angle at seat-off on hip joint contact force during sit-to-stand movement: a computer simulation study |
| title_fullStr | Effect of hip joint angle at seat-off on hip joint contact force during sit-to-stand movement: a computer simulation study |
| title_full_unstemmed | Effect of hip joint angle at seat-off on hip joint contact force during sit-to-stand movement: a computer simulation study |
| title_short | Effect of hip joint angle at seat-off on hip joint contact force during sit-to-stand movement: a computer simulation study |
| title_sort | effect of hip joint angle at seat off on hip joint contact force during sit to stand movement a computer simulation study |
| topic | Sit-to-stand movement Hip joint contact force Hip joint angle Seat-off |
| url | http://link.springer.com/article/10.1186/s12938-018-0610-5 |
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