The fate of the remaining knee(s) or hip(s) in osteoarthritic patients undergoing a primary TKA or THA

Yunchao Shao; Chi Zhang; Kory D Charron; Steven J Macdonald; Richard W McCalden; Robert B Bourne

doi:10.1016/j.arth.2012.10.008

The fate of the remaining knee(s) or hip(s) in osteoarthritic patients undergoing a primary TKA or THA

J Arthroplasty. 2013 Dec;28(10):1842-5. doi: 10.1016/j.arth.2012.10.008.

Authors

Yunchao Shao¹, Chi Zhang, Kory D Charron, Steven J Macdonald, Richard W McCalden, Robert B Bourne

Affiliation

¹ Department of Orthopaedic Surgery, Zhongshan hospital affiliated to Fudan University, Shanghai, P.R. China.

PMID: 24238572
DOI: 10.1016/j.arth.2012.10.008

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.

Keywords: contralateral; fate; osteoarthritis; total hip arthroplasty; total joint arthroplasty; total knee arthroplasty.

MeSH terms

Age Factors
Aged
Arthroplasty, Replacement, Hip / statistics & numerical data*
Arthroplasty, Replacement, Knee / statistics & numerical data*
Body Mass Index
Female
Follow-Up Studies
Hip Joint / surgery
Humans
Knee Joint / surgery
Male
Middle Aged
Osteoarthritis, Hip / surgery*
Osteoarthritis, Knee / surgery*
Proportional Hazards Models
Risk Factors