Cementless Semi-Constrained Rotating Platform Total Knee Replacement: A Concise Follow-Up of a Previous Report at a Minimum of Twenty Years

Background: A previous report evaluated the initial 310 cementless, Buechel-Pappas (B-P), Semi-Constrained Rotating Platform total knee replacements in 257 patients followed for an average of 7.6 years, range 2 - 18 years. Diagnoses were osteoarthritis 233 patients, post traumatic arthritis 4 and rheumatoid 22 patients. Knee Scores, using a strict scoring scale 86.4% excellent, 12.3% good, 0.3% fair 1.0% poor results. Survivorship, end point revision any mechanical reason (including component loosening, bearing wear dislocation) was 99.4%. Survivorship score persistent pain, instability infection 97.6%. The purpose present study is to updated results this same patient cohort at minimum follow-up twenty Methods: age time surgery 67 34 91 20 (22 knees) still living, with 30 years (mean 23.47 years). survivorship analysis used evaluate outcomes interval. Results: current study, points as 96.5% 30-year intervals. Late failure osteolysis not identified. Conclusion: This semi-constrained rotating platform replacement has stood test more than can be considered acceptable long-term use, properly selected