<qa>  What is the current evidence of postoperative rehabilitation after TKA?BACKGROUND In 2008 approximately 7,700 total knee arthroplasties TKA were performed in Denmark. The results after TKA is in general very good, the investigators have, however, discovered that patients following fast-track TKA still have a deficit 12 months postoperatively of 5-10 in health-related quality-of-life and 15-20 in activity and participation when compared to age- and gender matched population. A postoperative rehabilitation intervention has the potential to reduce or remove this observed deficit. The current evidence of postoperative rehabilitation after TKA is, however, scares and conflicting, and no studies have shown a lasting effect beyond 3 months postoperatively. 