12 13 Exclusion criteria were: acute knee or patellar tendon injuries ... signs or symptoms of other coexisting knee pathology on physical examination or ultrasound/MRI and contraindications for MRI.

Patellofemoral arthroplasty (PFA) is a partial replacement of the knee, involving the kneecap portion of the joint. This may be an option for a knee that has only worn out in one of the three areas of ...