Mismatch between Conventional Femoral Arthroplasty Stems and Hip Morphology in the Elderly Chinese Hip Fracture Population
INTRODUCTION: The morphology of the proximal femur differs in various populations. Based on our clinical experience, conventional femoral stems used in hip arthroplasty do not fit the Chinese population well. Hence, this study aims to evaluate the suitability of conventional femoral stems in the eld...
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| Format: | Article |
| Language: | English |
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Malaysian Orthopaedic Association
2021-07-01
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| Series: | Malaysian Orthopaedic Journal |
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| Online Access: | https://www.morthoj.org/2021/v15n2/femoral-stems.pdf |
| _version_ | 1818695299794731008 |
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| author | Siow JWX Kwek EBK |
| author_facet | Siow JWX Kwek EBK |
| author_sort | Siow JWX |
| collection | DOAJ |
| description | INTRODUCTION: The morphology of the proximal femur differs in various populations. Based on our clinical experience, conventional femoral stems used in hip arthroplasty do not fit the Chinese population well. Hence, this study aims to evaluate the suitability of conventional femoral stems in the elderly Chinese hip fracture population requiring hip arthroplasty and to establish if gender and age related differences exist within this population. MATERIALS AND METHODS: We retrospectively analysed radiographic data of 300 patients from a tertiary hospital’s
geriatric hip fracture database who underwent either hip hemi-arthroplasties or total hip arthroplasties. Proximal femur morphological measurements were recorded, analysed and compared to that of commonly used femoral stems. Subgroup analysis was performed to compare age and gender related differences. RESULTS: A total of 18.3% of the study population had a medial femoral offset (MFO) of less than 30mm, which is the smallest available offset for the implants studied. 22.6% of female and 3% of male subjects had MFOs that were less than 30mm. In our subgroup analysis, males had significantly larger femoral head diameters, MFO and
vertical femoral offsets compared to females. Older subjects (75-90 years old) had significantly smaller femoral head diameters, vertical femoral offsets and neck shaft angles compared to younger subjects (60-75 years old). CONCLUSION: Commonly used femoral stem implants have measurements that do not suit our Chinese population with small medial femoral offsets. In addition, elderly males have significantly larger femoral head diameters, medial and vertical femoral offsets whereas older subjects have significantly smaller femoral head diameters, vertical femoral offsets and neck shaft angles. |
| first_indexed | 2024-12-17T13:43:16Z |
| format | Article |
| id | doaj.art-08a72ec666644c8cb362cb659d58a500 |
| institution | Directory Open Access Journal |
| issn | 1985-2533 2232-111X |
| language | English |
| last_indexed | 2024-12-17T13:43:16Z |
| publishDate | 2021-07-01 |
| publisher | Malaysian Orthopaedic Association |
| record_format | Article |
| series | Malaysian Orthopaedic Journal |
| spelling | doaj.art-08a72ec666644c8cb362cb659d58a5002022-12-21T21:46:13ZengMalaysian Orthopaedic AssociationMalaysian Orthopaedic Journal1985-25332232-111X2021-07-0115210110610.5704/MOJ.2107.015Mismatch between Conventional Femoral Arthroplasty Stems and Hip Morphology in the Elderly Chinese Hip Fracture PopulationSiow JWX0Kwek EBK1FRCSFRCSINTRODUCTION: The morphology of the proximal femur differs in various populations. Based on our clinical experience, conventional femoral stems used in hip arthroplasty do not fit the Chinese population well. Hence, this study aims to evaluate the suitability of conventional femoral stems in the elderly Chinese hip fracture population requiring hip arthroplasty and to establish if gender and age related differences exist within this population. MATERIALS AND METHODS: We retrospectively analysed radiographic data of 300 patients from a tertiary hospital’s geriatric hip fracture database who underwent either hip hemi-arthroplasties or total hip arthroplasties. Proximal femur morphological measurements were recorded, analysed and compared to that of commonly used femoral stems. Subgroup analysis was performed to compare age and gender related differences. RESULTS: A total of 18.3% of the study population had a medial femoral offset (MFO) of less than 30mm, which is the smallest available offset for the implants studied. 22.6% of female and 3% of male subjects had MFOs that were less than 30mm. In our subgroup analysis, males had significantly larger femoral head diameters, MFO and vertical femoral offsets compared to females. Older subjects (75-90 years old) had significantly smaller femoral head diameters, vertical femoral offsets and neck shaft angles compared to younger subjects (60-75 years old). CONCLUSION: Commonly used femoral stem implants have measurements that do not suit our Chinese population with small medial femoral offsets. In addition, elderly males have significantly larger femoral head diameters, medial and vertical femoral offsets whereas older subjects have significantly smaller femoral head diameters, vertical femoral offsets and neck shaft angles.https://www.morthoj.org/2021/v15n2/femoral-stems.pdffemoral stemship arthroplastyhip morphologymedial femoral offsetmismatch |
| spellingShingle | Siow JWX Kwek EBK Mismatch between Conventional Femoral Arthroplasty Stems and Hip Morphology in the Elderly Chinese Hip Fracture Population Malaysian Orthopaedic Journal femoral stems hip arthroplasty hip morphology medial femoral offset mismatch |
| title | Mismatch between Conventional Femoral Arthroplasty Stems and Hip Morphology in the Elderly Chinese Hip Fracture Population |
| title_full | Mismatch between Conventional Femoral Arthroplasty Stems and Hip Morphology in the Elderly Chinese Hip Fracture Population |
| title_fullStr | Mismatch between Conventional Femoral Arthroplasty Stems and Hip Morphology in the Elderly Chinese Hip Fracture Population |
| title_full_unstemmed | Mismatch between Conventional Femoral Arthroplasty Stems and Hip Morphology in the Elderly Chinese Hip Fracture Population |
| title_short | Mismatch between Conventional Femoral Arthroplasty Stems and Hip Morphology in the Elderly Chinese Hip Fracture Population |
| title_sort | mismatch between conventional femoral arthroplasty stems and hip morphology in the elderly chinese hip fracture population |
| topic | femoral stems hip arthroplasty hip morphology medial femoral offset mismatch |
| url | https://www.morthoj.org/2021/v15n2/femoral-stems.pdf |
| work_keys_str_mv | AT siowjwx mismatchbetweenconventionalfemoralarthroplastystemsandhipmorphologyintheelderlychinesehipfracturepopulation AT kwekebk mismatchbetweenconventionalfemoralarthroplastystemsandhipmorphologyintheelderlychinesehipfracturepopulation |