Revision for stiff knee after knee replacement.

Stiffness following total knee replacement is defined as >15° flexion contracture and/or flexion <75° or, for other authors, arc of motion <70° or 45° or 50°. Alternatively, it could be defined as a range of motion less than the patient needs in order to be able to do what they wish. The first step in management is to determine the causes: preoperative (history of stiffness, patient-related risk factors, etc.