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PF arthroplasty vs combined UKA yielded similar clinical, functional outcomes
Patients who underwent patellofemoral arthroplasty with a gender-specific implant experienced excellent clinical and radiographic outcomes whether performed as an isolated replacement or when combined with medial unicompartmental knee arthroplasty, according to results.
Among 105 patellofemoral (PF) arthroplasties performed with a gender-specific designed prosthesis (Zimmer Gender Solutions PFJ, Zimmer Inc.) in 85 patients, 64 knees underwent an isolated PF arthroplasty for treatment of isolated PF osteoarthritis and 41 knees underwent medial unicompartmental knee arthroplasty and PF arthroplasty for treatment of bicompartmental osteoarthritis. Researchers assessed preoperative and postoperative clinical and functional scores, including knee range of motion, Knee Society Score, University of California, Los Angeles (UCLA) Activity Score, Tegner Activity Level Scales and VAS for pain. Researchers also evaluated preoperative and postoperative radiographs for PF and tibiofemoral compartment OA, trochlear dysplasia, changes in patellar height and signs of osteolysis.
Results showed both groups had improvement in knee joint range of motion, clinical and functional Knee Society Scores, UCLA Activity Score and VAS for pain at a mean follow-up of approximately 5.5 years. Researchers noted the two groups had no statistically significant postoperative differences, and no signs of osteolysis or subsidence were recorded. According to results, the implants had a survivorship of 95.2%. – by Casey Tingle
Disclosures: Romagnoli reports he is a paid consultant for Zimmer Biomet. Please see the full study for a list of all other authors’ relevant financial disclosures.