FIGURE 2.
Scores reflecting health-related quality of life among subjects with frequent bilateral knee pain, frequent unilateral knee pain, and no knee pain.
Abbreviations: KOOS, Knee Injury and Osteoarthritis Outcome Score; MCS, mental component summary score of the Medical Outcomes Study 12-Item Short-Form Health Survey; PCS, physical component summary score of the Medical Outcomes Study 12-Item Short-Form Health Survey; QoL, quality of life.