Bionic reconstruction of tension trabeculae in short-stem hip arthroplasty: a finite element analysis
Abstract Background Short-stem hip arthroplasty (SHA) is characterized by metaphyseal load transfer that effectively preserves the bone stock, but still suffers from stress shielding in the proximal femur. We designed a tension screw to mimic tension trabeculae in the new bionic collum femoris prese...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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BMC
2023-02-01
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| Series: | BMC Musculoskeletal Disorders |
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| Online Access: | https://doi.org/10.1186/s12891-023-06205-3 |
| _version_ | 1811171869855842304 |
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| author | Zhentao Ding Jun Wang Yanhua Wang Xiaomeng Zhang Yong Huan Dianying Zhang |
| author_facet | Zhentao Ding Jun Wang Yanhua Wang Xiaomeng Zhang Yong Huan Dianying Zhang |
| author_sort | Zhentao Ding |
| collection | DOAJ |
| description | Abstract Background Short-stem hip arthroplasty (SHA) is characterized by metaphyseal load transfer that effectively preserves the bone stock, but still suffers from stress shielding in the proximal femur. We designed a tension screw to mimic tension trabeculae in the new bionic collum femoris preserving (BCFP) short stem for bionic reconstruction, aiming to restore the biomechanics of hip joint. Methods Native femur finite element model was constructed to investigate the biomechanics of hip joint based on computed tomography (CT) data. The maximum absolute principal stress/strain cloud chart allowed the direction of stress/strain to be assessed. Six BCFP models with different screw angles (5°, 10°, 15°, 20°, 25°, and 30°) and the Corail model were created. The stress/strain distribution and overall stiffness were compared between each of the BCFP and Corail implanted models. Results The native model visualized the transfer pathways of tensile and compressive stress. The BCFP stems showed significantly higher stress and strain distribution in the greater trochanteric region compared to conventional total hip arthroplasty (THA). In particular, the BCFP-5° stem demonstrated the highest average strain in both medial and lateral regions and the overall stiffness was closest to the intact femur. Conclusions Stress transfer pathways of trabecular architecture provide biomechanical insight that serves as the basis for bionic reconstruction. The tension screw improves load transfer pattern in the proximal femur and prevents stress reduction in the greater trochanteric region. The BCFP-5° stem minimizes the stress shielding effect and presents a more bionic mechanical performance. |
| first_indexed | 2024-04-10T17:21:22Z |
| format | Article |
| id | doaj.art-329db926cc7e4024b28254e028d6caac |
| institution | Directory Open Access Journal |
| issn | 1471-2474 |
| language | English |
| last_indexed | 2024-04-10T17:21:22Z |
| publishDate | 2023-02-01 |
| publisher | BMC |
| record_format | Article |
| series | BMC Musculoskeletal Disorders |
| spelling | doaj.art-329db926cc7e4024b28254e028d6caac2023-02-05T12:02:13ZengBMCBMC Musculoskeletal Disorders1471-24742023-02-0124111110.1186/s12891-023-06205-3Bionic reconstruction of tension trabeculae in short-stem hip arthroplasty: a finite element analysisZhentao Ding0Jun Wang1Yanhua Wang2Xiaomeng Zhang3Yong Huan4Dianying Zhang5Department of Orthopedics and Trauma, Peking University People’s HospitalState Key Laboratory of Nonlinear Mechanics (LNM), Institute of Mechanics, Chinese Academy of SciencesDepartment of Orthopedics and Trauma, Peking University People’s HospitalDepartment of Orthopedics and Trauma, Peking University People’s HospitalState Key Laboratory of Nonlinear Mechanics (LNM), Institute of Mechanics, Chinese Academy of SciencesDepartment of Orthopedics and Trauma, Peking University People’s HospitalAbstract Background Short-stem hip arthroplasty (SHA) is characterized by metaphyseal load transfer that effectively preserves the bone stock, but still suffers from stress shielding in the proximal femur. We designed a tension screw to mimic tension trabeculae in the new bionic collum femoris preserving (BCFP) short stem for bionic reconstruction, aiming to restore the biomechanics of hip joint. Methods Native femur finite element model was constructed to investigate the biomechanics of hip joint based on computed tomography (CT) data. The maximum absolute principal stress/strain cloud chart allowed the direction of stress/strain to be assessed. Six BCFP models with different screw angles (5°, 10°, 15°, 20°, 25°, and 30°) and the Corail model were created. The stress/strain distribution and overall stiffness were compared between each of the BCFP and Corail implanted models. Results The native model visualized the transfer pathways of tensile and compressive stress. The BCFP stems showed significantly higher stress and strain distribution in the greater trochanteric region compared to conventional total hip arthroplasty (THA). In particular, the BCFP-5° stem demonstrated the highest average strain in both medial and lateral regions and the overall stiffness was closest to the intact femur. Conclusions Stress transfer pathways of trabecular architecture provide biomechanical insight that serves as the basis for bionic reconstruction. The tension screw improves load transfer pattern in the proximal femur and prevents stress reduction in the greater trochanteric region. The BCFP-5° stem minimizes the stress shielding effect and presents a more bionic mechanical performance.https://doi.org/10.1186/s12891-023-06205-3Short-stem hip arthroplastyStress shieldingHip biomechanicsBionic reconstructionTension screwFinite element analysis |
| spellingShingle | Zhentao Ding Jun Wang Yanhua Wang Xiaomeng Zhang Yong Huan Dianying Zhang Bionic reconstruction of tension trabeculae in short-stem hip arthroplasty: a finite element analysis BMC Musculoskeletal Disorders Short-stem hip arthroplasty Stress shielding Hip biomechanics Bionic reconstruction Tension screw Finite element analysis |
| title | Bionic reconstruction of tension trabeculae in short-stem hip arthroplasty: a finite element analysis |
| title_full | Bionic reconstruction of tension trabeculae in short-stem hip arthroplasty: a finite element analysis |
| title_fullStr | Bionic reconstruction of tension trabeculae in short-stem hip arthroplasty: a finite element analysis |
| title_full_unstemmed | Bionic reconstruction of tension trabeculae in short-stem hip arthroplasty: a finite element analysis |
| title_short | Bionic reconstruction of tension trabeculae in short-stem hip arthroplasty: a finite element analysis |
| title_sort | bionic reconstruction of tension trabeculae in short stem hip arthroplasty a finite element analysis |
| topic | Short-stem hip arthroplasty Stress shielding Hip biomechanics Bionic reconstruction Tension screw Finite element analysis |
| url | https://doi.org/10.1186/s12891-023-06205-3 |
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