Alternative Mechanical Evaluation Method for Ceramic Hip Joint Implants Utilizing Finite Element Analysis under in vivo-like Conditions
This study proposes an alternative mechanical simulation protocol for ceramic femoral heads under in vivo-like conditions. A 3D pelvis model is obtained from CT images and the finite elements of the implanted models are validated based on Kwong's experimental results. The stress distributio...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
The Japan Society of Mechanical Engineers
2012-11-01
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| Series: | Journal of Biomechanical Science and Engineering |
| Subjects: | |
| Online Access: | https://www.jstage.jst.go.jp/article/jbse/7/4/7_336/_pdf/-char/en |
| _version_ | 1828271531478745088 |
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| author | Sungmin HAN Jun-Uk CHU Kang-Il SONG Sunghee PARK Jea Bong CHOI Jong Woong PARK Kuiwon CHOI Inchan YOUN |
| author_facet | Sungmin HAN Jun-Uk CHU Kang-Il SONG Sunghee PARK Jea Bong CHOI Jong Woong PARK Kuiwon CHOI Inchan YOUN |
| author_sort | Sungmin HAN |
| collection | DOAJ |
| description | This study proposes an alternative mechanical simulation protocol for ceramic femoral heads under in vivo-like conditions. A 3D pelvis model is obtained from CT images and the finite elements of the implanted models are validated based on Kwong's experimental results. The stress distribution of nine different femoral head models is then compared when using the conventional proof test (standard ISO 7206-10) and proposed test protocol (postoperative models). Both test methods show a decrease in the maximum stress when increasing the size of the femoral head and bore depth. However, for the stress distribution, the postoperative models reveal a concentration on the superior inner region of femoral head cranial, while the proof test shows an axisymmetric shape in the tangential direction. As a non-uniformed stress distribution increases the probability of fracture, the mechanical testing of ceramic femoral heads should be considered under in vivo-like conditions in order to improve the mechanical reliability of the joint. Thus, the current results show the necessity and viability of an alternative mechanical evaluation method for ceramic hip implants. |
| first_indexed | 2024-04-13T05:53:39Z |
| format | Article |
| id | doaj.art-fab1119ce4594e46a01b2f09146b3803 |
| institution | Directory Open Access Journal |
| issn | 1880-9863 |
| language | English |
| last_indexed | 2024-04-13T05:53:39Z |
| publishDate | 2012-11-01 |
| publisher | The Japan Society of Mechanical Engineers |
| record_format | Article |
| series | Journal of Biomechanical Science and Engineering |
| spelling | doaj.art-fab1119ce4594e46a01b2f09146b38032022-12-22T02:59:41ZengThe Japan Society of Mechanical EngineersJournal of Biomechanical Science and Engineering1880-98632012-11-017433634810.1299/jbse.7.336jbseAlternative Mechanical Evaluation Method for Ceramic Hip Joint Implants Utilizing Finite Element Analysis under in vivo-like ConditionsSungmin HAN0Jun-Uk CHU1Kang-Il SONG2Sunghee PARK3Jea Bong CHOI4Jong Woong PARK5Kuiwon CHOI6Inchan YOUN7Biomedical Research Institute, KISTBiomedical Research Institute, KISTBiomedical Research Institute, KISTBiomedical Research Institute, KISTMechanical Systems Engineering, Hansung UniversityDepartment of Orthopaedic Surgery, College of Medicine, Korea UniversityBiomedical Research Institute, KISTBiomedical Research Institute, KISTThis study proposes an alternative mechanical simulation protocol for ceramic femoral heads under in vivo-like conditions. A 3D pelvis model is obtained from CT images and the finite elements of the implanted models are validated based on Kwong's experimental results. The stress distribution of nine different femoral head models is then compared when using the conventional proof test (standard ISO 7206-10) and proposed test protocol (postoperative models). Both test methods show a decrease in the maximum stress when increasing the size of the femoral head and bore depth. However, for the stress distribution, the postoperative models reveal a concentration on the superior inner region of femoral head cranial, while the proof test shows an axisymmetric shape in the tangential direction. As a non-uniformed stress distribution increases the probability of fracture, the mechanical testing of ceramic femoral heads should be considered under in vivo-like conditions in order to improve the mechanical reliability of the joint. Thus, the current results show the necessity and viability of an alternative mechanical evaluation method for ceramic hip implants.https://www.jstage.jst.go.jp/article/jbse/7/4/7_336/_pdf/-char/entotal hip replacementceramic femoral headfinite element analysismechanical stabilityin vivo-like condition |
| spellingShingle | Sungmin HAN Jun-Uk CHU Kang-Il SONG Sunghee PARK Jea Bong CHOI Jong Woong PARK Kuiwon CHOI Inchan YOUN Alternative Mechanical Evaluation Method for Ceramic Hip Joint Implants Utilizing Finite Element Analysis under in vivo-like Conditions Journal of Biomechanical Science and Engineering total hip replacement ceramic femoral head finite element analysis mechanical stability in vivo-like condition |
| title | Alternative Mechanical Evaluation Method for Ceramic Hip Joint Implants Utilizing Finite Element Analysis under in vivo-like Conditions |
| title_full | Alternative Mechanical Evaluation Method for Ceramic Hip Joint Implants Utilizing Finite Element Analysis under in vivo-like Conditions |
| title_fullStr | Alternative Mechanical Evaluation Method for Ceramic Hip Joint Implants Utilizing Finite Element Analysis under in vivo-like Conditions |
| title_full_unstemmed | Alternative Mechanical Evaluation Method for Ceramic Hip Joint Implants Utilizing Finite Element Analysis under in vivo-like Conditions |
| title_short | Alternative Mechanical Evaluation Method for Ceramic Hip Joint Implants Utilizing Finite Element Analysis under in vivo-like Conditions |
| title_sort | alternative mechanical evaluation method for ceramic hip joint implants utilizing finite element analysis under in vivo like conditions |
| topic | total hip replacement ceramic femoral head finite element analysis mechanical stability in vivo-like condition |
| url | https://www.jstage.jst.go.jp/article/jbse/7/4/7_336/_pdf/-char/en |
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