Increased Long-Term Survival of Posterior Cruciate-Retaining Versus Posterior Cruciate-Stabilizing Total Knee Replacements

• DOI: 10.2106/jbjs.j.01143
• Publication Date: 2011-11-18T01:51:00Z
• Authors: Matthew P. Abdel; Mark E. Morrey; Matthew R. Jensen; Bernard F. Morrey
• Keywords: Posterior cruciate ligament; Total Knee Replacement

Considerable debate remains regarding the use of posterior cruciate-retaining or cruciate-stabilizing designs for total knee arthroplasty. Multiple studies have investigated kinematic, radiographic, and clinical outcomes both. Nevertheless, long-term survivorship analyses directly comparing two not been performed, to our knowledge. Our goal was analyze fifteen-year survival replacements at institution.A retrospective review identified 8117 arthroplasties (5389 2728 cruciate-stabilizing) that had performed from 1988 1998. This range chosen because both were used in high volumes institution during this period. Patients followed via joint registry one, two, five years after arthroplasty every thereafter. Aseptic revision surgery primary end point analysis. Implant estimated with Kaplan-Meier curves.Survival fifteen 90% replacements, compared 77% (p < 0.001). In knees preoperative deformity, 75% 0.04). Likewise, without 88% 78% After adjustment age, sex, diagnosis, risk significantly lower a replacement 0.001; hazard ratio = 0.5; 95% confidence interval, 0.4 0.6).In evaluating implants study period, prostheses improved comparison years. Furthermore, significant difference remained when accounting deformity.