Changes in Physical Activity After Total Hip or Knee Arthroplasty: A Systematic Review and Meta-Analysis of Six- and Twelve-Month Outcomes.

Little is known about the extent to which physical activity (PA) levels change following total knee or hip joint replacement relative to pain, physical function, and quality of life. Our objective was to conduct a systematic review and meta-analysis on changes in PA relative to pain, quality of life, and physical function after total knee or hip joint replacement.