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. 2006 Jun;21(4):559-66.
doi: 10.1016/j.arth.2005.07.010.

Preoperative function and gender predict pattern of functional recovery after hip and knee arthroplasty

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Preoperative function and gender predict pattern of functional recovery after hip and knee arthroplasty

Deborah M Kennedy et al. J Arthroplasty. 2006 Jun.

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 < or= .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 < or= .001) in all models. Patients' and surgeons' expectations of outcome need to take preoperative function into account.

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Figures

Fig. 1
Fig. 1
Predicted growth curves for the WOMAC pain subscale averaged across other predictors.
Fig. 2
Fig. 2
Predicted growth curves for the WOMAC pain subscale post-TKA illustrating the impact of preoperative WOMAC pain scores (percentiles).
Fig. 3
Fig. 3
Predicted growth curves for men post-THA illustrating the impact of preoperative 6MWT scores (percentiles).
Fig. 4
Fig. 4
Predicted growth curves for the 6MWT illustrating the impact of gender post-THA and TKA.

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