title: Preoperative function and gender predict pattern of functional recovery after hip and knee arthroplasty.
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.
authors.affiliation: Department of Rehabilitation, Centre for Studies of Physical Function, Orthopaedic and Arthritic Institute of Sunnybrook and Women's College Health Sciences Centre, Toronto, Ontario, Canada.
authors.forename: Deborah M
authors.initials: DM
authors.lastname: Kennedy
authors.forename: Steven E
authors.initials: SE
authors.lastname: Hanna
authors.forename: Paul W
authors.initials: PW
authors.lastname: Stratford
authors.forename: Jean
authors.initials: J
authors.lastname: Wessel
authors.forename: Jeffrey D
authors.initials: JD
authors.lastname: Gollish
mesh_terms: D000368:Aged; D019644:Arthroplasty, Replacement, Hip / Q000534:rehabilitation*; D019645:Arthroplasty, Replacement, Knee / Q000534:rehabilitation*; D006233:Persons with Disabilities / Q000706:statistics & numerical data; D005260:Female; D006621:Hip Joint / Q000503:physiopathology*; D006801:Humans; D007719:Knee Joint / Q000503:physiopathology*; D008297:Male; D008875:Middle Aged; D009043:Motor Activity; D010003:Osteoarthritis / Q000601:surgery; D011184:Postoperative Period; D011237:Predictive Value of Tests; D012189:Retrospective Studies; D016896:Treatment Outcome; D016138:Walking