Tai chi chuan exercises improve functional outcomes and quality of life in patients with primary total knee arthroplasty due to knee osteoarthritis.

•Tai Chi exercises can improve the functional outcomes and the quality of life for patients with TKA.•Tai Chi exercises as a mild exercise does not have negative side effects on patients with TKA.•Tai Chi exercises seem to be a new form of postoperative rehabilitation exercises for patients with TKA.