Preoperative Function and Gender Predict Pattern of Functional Recovery After Hip and Knee Arthroplasty

https://doi.org/10.1016/j.arth.2005.07.010Get rights and content

Abstract

Gender, preoperative function, and other variables were explored as predictors of recovery after total hip and knee arthroplasty. One hundred fifty-two subjects (63.8 ± 10.2 years) were repeatedly assessed in the first 4 postoperative months. Average recovery curves for the Western Ontario and McMaster Universities Osteoarthritis Index, 6-minute walk test, and timed up and go test were characterized using hierarchical linear modeling. Recovery predictors were sequentially modeled after validation of the basic developmental models. Gender was a significant predictor (P ≤ .003) of physical performance measure scores 1 week after surgery. Thereafter, men and women had similar rates of improvement. Preoperative score was a significant predictor (P ≤ .001) in all models. Patients' and surgeons' expectations of outcome need to take preoperative function into account.

Key words

total hip and knee arthroplasty
hierarchical linear modeling
disability
performance measurement
outcome

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Benefits or funds were received in partial or total support of the research material described in this article from the Orthopaedic and Arthritic Foundation.

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