Ten-Year Results of the Press Fit Condylar Sigma Cobalt –Chrome Total Knee Replacement

J Knee Surg DOI: 10.1055/s-0038-1641138Total knee arthroplasty (TKA) is reliant on safe and effective implants. The Press Fit Condylar Sigma Cobalt–Chrome (PFCSCC) was introduced in 2006, but no reports have examined long-term failure rates and patient-reported outcome measures (PROMs). The primary aim of this study was to assess survival outcomes of the PFCSCC at 10 years after implantation. Prospective data collection was performed on all patients undergoing primary TKA in one orthopaedic department using this prosthesis exclusively from February 1, 2006, to January 31, 2007. Follow-up was at 10 years. Survival analysis was performed using two primary outcome measures: (1) all-cause joint revision and (2) aseptic revision. Secondary outcomes measures included the American Knee Society Score (AKSS) and Oxford Knee Score (OKS). In total, 249 knees of 233 patients underwent primary TKA. Mean patient age was 66.7 years (range 34–80), and mean body mass index (BMI) was 30 kg/m2 (20.7–40.1). Reviewing all causes of revisions, 14 joints (5.6%) of 14 patients required reoperation. Of these, nine were for deep infection, including six in the first year. Four (1.6%) underwent aseptic revision. Mean AKSS changed from 47.6 to 90.4 (n = 140; p < 0.001) at 10 years, and mean OKS changed from 38.3 to 23.2 (n = 149; p < 0.001). Prospective analysis of consecutive TKA cases using this design of prosthesis demonstrated high survival rates of 94.4% (all-cause revis...

Source: Journal of Knee Surgery - April 10, 2018 Category: Orthopaedics Authors: Keenan, Oisin Brenkel, Ivan Walmsley, Phil Tags: Original Article Source Type: research