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The Effect of Patellar Replacement Technique on Patellofemoral Complications and Anterior Knee Pain

Routine patella replacement with total knee arthroplasty has not been universally adopted because of associated patellofemoral complications such as anterior knee pain (AKP). In the proposed technique, the articular surface of the lateral facet of the patella is excised to the depth of the subchondral bone, and the medial facet is then cut parallel to the anterior surface. We evaluated any correlation between various radiographic parameters and AKP in 100 consecutive fixed-bearing posterior-stabilized total knee arthroplasties. There were no cases of fracture, avascular necrosis, subluxation, dislocation, patellar baja, or overstuffing of the patella. Anterior knee pain was present in 11% of cases, and no cases were severe or disabling. There were no correlations between AKP, range of motion, patellar size and shape, and any of the radiographic parameters.

The Journal of Arthroplasty

Volume 27, Issue 6, June 2012, Pages 1075-1080.e1

Morteza Meftah MD, AnoopJhurani MS [Ortho], Javid A. Bhat MD, Amar S.Ranawat MD, Chitranjan S. Ranawat MD

Adult Reconstruction Research Fellow, Hospital for Special Surgery, New York, New YorkJoint Replacement Service, Fortis Hospital, 7 jha 12, Jawahar Nagar, Jaipur, IndiaOrthopaedics, SKIMS Medical College, E-6 cooperative colony, Peer Bagh, Srinagar, Kashmir, India§Orthopaedic Surgery, Weill Medical College of Cornell University, Hospital for Special Surgery, New York, New York

Received 24 June 2011, Accepted 7 October 2011, Available online 23 December 2011.