The Fate of the Remaining Knee(s) or Hip(s) in Osteoarthritic Patients Undergoing a Primary TKA or THA |
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| Authors: | Yunchao Shao MD Chi Zhang Kory D. CharronSteven J. MacDonald MD FRCSC Richard W. McCalden Robert B. Bourne |
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| Affiliation: | 1. Department of Orthopaedic Surgery, Zhongshan hospital affiliated to Fudan University, Shanghai, P.R. China;2. Division of Orthopaedic Surgery, London Health Sciences Centre, University Campus, University of Western Ontario, London, Ontario, Canada |
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| Abstract: | The purpose of this study was to determine the fate of the remaining hip(s) and knee(s) following an initial total hip or knee arthroplasty in 5352 patients with idiopathic osteoarthritis who were followed for a minimum ten years (mean 17.8 ± 5.7 years). Following an initial primary TKA, 46.0% of patients had a contralateral TKA, 2.3% had an ipsilateral THA and 1.3% had a contralateral THA. Following an initial primary THA, 30.5% of patients had a contralateral THA, 6.8% had an ipsilateral TKA and 2.9% had a contralateral TKA. Cox regression analysis demonstrated that BMI was the sole risk factor for a second THA, but both age less than sixty years and a higher BMI were significant factors for patients requiring an additional primary TKA. |
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| Keywords: | total joint arthroplasty total knee arthroplasty total hip arthroplasty fate osteoarthritis contralateral |
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