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Survival analysis of total condylar-type prostheses
P M Faris1, S A Herbst, E M Keating
1Center for Hip and Knee Surgery, Mooresville, IN.
Seminars in Arthroplasty
|December 10, 1990
Summary
Posterior cruciate ligament-retaining total condylar knee arthroplasty demonstrates high long-term success. Survival estimates at 12 years exceeded 94%, indicating a durable and effective surgical option for knee replacement.
Area of Science:
- Orthopedic Surgery
- Biomedical Engineering
- Clinical Outcomes Research
Background:
- Total knee arthroplasty (TKA) is a common procedure for end-stage knee arthritis.
- Preserving the posterior cruciate ligament (PCL) in TKA may offer biomechanical advantages.
- Assessing the long-term efficacy of PCL-retaining TKA is crucial for surgical decision-making.
Purpose of the Study:
- To evaluate the long-term survival and clinical outcomes of posterior cruciate ligament-retaining total condylar knee arthroplasties.
- To determine the success rate of this specific TKA technique over an extended follow-up period.
Main Methods:
- Retrospective analysis of 422 posterior cruciate ligament-retaining total condylar knee arthroplasties performed between 1975 and 1983.
- Exclusion criteria included prior TKA, follow-up less than 1 year, or infection.
- Survival analysis using Kaplan-Meier and crude estimates for 363 remaining knees with a mean follow-up of 6.86 years.
Main Results:
- Kaplan-Meier survival estimate at 12 years was 94.7%.
- Crude survival estimate at 12 years was 96.6%.
- These results align with other published survival analyses for similar procedures.
Conclusions:
- Posterior cruciate ligament-retaining total condylar knee arthroplasty exhibits excellent long-term survival rates.
- The PCL-retaining technique is a reliable option for total knee replacement, offering durable outcomes.
- Sustained high survival rates support the continued use of this surgical approach.