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Total knee arthroplasty using cruciate-retaining kinematic condylar prosthesis
G S Sextro1, D J Berry, J A Rand
1Mayo Clinic, Rochester, MN 55905, USA.
Clinical Orthopaedics and Related Research
|July 14, 2001
Summary
The Kinematic I condylar prosthesis, retaining the posterior cruciate ligament, demonstrates good long-term function and survivorship in total knee arthroplasty. This posterior cruciate ligament-sparing implant shows promising results at a mean follow-up of 15.7 years.
Area of Science:
- Orthopedic Surgery
- Biomedical Engineering
Background:
- Total knee arthroplasty (TKA) is a common procedure for end-stage knee osteoarthritis.
- Posterior cruciate ligament (PCL) retention in TKA aims to improve biomechanics and patient function.
- The Kinematic I condylar prosthesis is a specific implant design for TKA with PCL retention.
Purpose of the Study:
- To evaluate the long-term clinical outcomes and survivorship of the Kinematic I condylar prosthesis.
- To assess the performance of TKA with PCL retention over an extended follow-up period.
Main Methods:
- Retrospective analysis of 168 Kinematic I total knee arthroplasties in 118 patients.
- Follow-up data collected on 66 knees from 50 patients at a mean of 15.7 years.
- Analysis of revision rates due to various complications, including aseptic loosening and wear.
Main Results:
- 15-year survivorship free of any component revision (excluding infections) was 88.7%.
- 15-year survivorship free of radiographic loosening and/or revision was 85.1%.
- Common reasons for revision included aseptic loosening and polyethylene wear.
Conclusions:
- The posterior cruciate ligament-sparing Kinematic I condylar prosthesis exhibits good long-term function.
- The implant demonstrates favorable survivorship rates, supporting its use in TKA.
- PCL retention with this prosthesis design appears to yield durable results in the long term.