Functional Outcome Measures

The Knee Society released a revised knee rating system in 1989 and updated it in 2011 (Fig 22-1). The latest update has been tailored to incorporate patient-specific activities and patient-perceived expectations. The updated system now consists of preoperative and postoperative objective measurements recorded by the surgeon and patient-driven measures evaluated by patients concerning their perceptions of the most important and deleterious aspects of their knee arthritis and replacement surgery.

The new scoring system (PDF) is available on ResearchGate (https://www.researchgate.net/publication/51762797)