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

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


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.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Aged
  • Arthroplasty, Replacement, Hip / rehabilitation*
  • Arthroplasty, Replacement, Knee / rehabilitation*
  • Disabled Persons / statistics & numerical data
  • Female
  • Hip Joint / physiopathology*
  • Humans
  • Knee Joint / physiopathology*
  • Male
  • Middle Aged
  • Motor Activity
  • Osteoarthritis / surgery
  • Postoperative Period
  • Predictive Value of Tests
  • Retrospective Studies
  • Treatment Outcome
  • Walking