Femoral Neck Narrowing After Metal-on-Metal Hip Resurfacing
| Autor: | R. M. Dominic Meek, H.M. Murray, Robert Carter, S.J. Spencer |
|---|---|
| Rok vydání: | 2008 |
| Předmět: |
Male
medicine.medical_specialty Arthroplasty Replacement Hip medicine.medical_treatment Radiography medicine Humans Orthopedics and Sports Medicine Longitudinal Studies Pelvis Retrospective Studies Femoral neck Femur Neck business.industry Middle Aged Stress shielding Arthroplasty Hip resurfacing Femoral Neck Fractures Prosthesis Failure medicine.anatomical_structure Metals Female Plain radiographs Hip Prosthesis Radiology Implant business Follow-Up Studies |
| Zdroj: | The Journal of Arthroplasty. 23:1105-1109 |
| ISSN: | 0883-5403 |
| DOI: | 10.1016/j.arth.2007.10.014 |
| Popis: | We reviewed 40 Corin Cormet 2000 (Corin, Cirencester, UK) metal-on-metal resurfacing hips, in 36 patients, for the presence of femoral neck narrowing. A neck-to-prosthesis ratio was calculated by dividing the diameter of the femoral neck with that of the implant. This ratio was measured on plain anteroposterior pelvis radiographs taken immediately and 2 years postoperation. Subsequent radiographs were measured up to a maximum 7 years (mean, 5.3 years) postoperation. Femoral neck narrowing was observed in 90% of hips at 2 years, with the average neck narrowing ranging from a ratio of 0.865 to 0.811. Importantly, no further narrowing occurred beyond this point up to 7 years postoperation. We described a simple reproducible method of measuring neck narrowing on plain radiographs and discuss possible causal factors for neck narrowing after hip resurfacing. |
| Databáze: | OpenAIRE |
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