LAUSR

The prevalence of stiffness after total knee arthroplasty ranges from 1.3% to 5.8%.Stiffness is multifactorial and can be attributed to a variety of preoperative, intraoperative, and postoperative patient and technical factors.Once infection and mechanical factors have been ruled out, stiffness following total knee arthroplasty can be diagnosed as arthrofibrosis. Manipulation under anesthesia is typically reserved for patients who have been unable to regain range of motion after aggressive physical therapy.Manipulation under anesthesia has few risks and is successful in providing functional improvement for the majority of patients.The optimal timing for performing manipulation under anesthesia is unclear, but early manipulation (⩽3 months after total knee arthroplasty) appears to produce superior results to late manipulation (>3 months after total knee arthroplasty).