• H-R Springorum, A Keshmiri, G Heers, T Renkawitz, J Grifka, and C Baier.
• Orthopädische Klinik für die Universität Regensburg, Asklepios Klinikum Bad Abbach, Deutschland. hrspringorum@googlemail.de
• Radiologe. 2012 Nov 1;52(11):987-93.

AbstractTotal knee arthroplasty (TKA) is one of the most successful operative procedures over the last decades in orthopedic surgery; however, some patients suffer from pain, limited range of motion, instability, infections or other complications postoperatively. Patellofemoral pain (PFP) in particular is a common problem after TKA and often necessitates revision surgery. Mainly increasing and localized contact pressure and patella maltracking are held responsible for PFP but the reasons vary. Diagnostics and therapy of PFP is not easy to manage and should be treated following a clinical pathway. The authors suggest that patients with PFP should be categorized after basic diagnostic measures according to the suspected diagnosis: (1) tendinosis, (2) mechanical reasons, (3) intra-articular non-mechanical reasons and (4) neurogenic/psychiatric reasons. Efficient application of special diagnostic measures and further therapy is facilitated by this classification.

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