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Total condylar III knee prosthesis. Long-term follow-up study
W F Donaldson1, T P Sculco, J N Insall
1Hospital for Special Surgery, New York, New York.
Clinical Orthopaedics and Related Research
|January 1, 1988
Summary
The total condylar III knee prosthesis (TCP III) offers improved motion and good-to-excellent results in complex knee revision surgeries. However, it is not suitable for cases with significant bone loss.
Area of Science:
- Orthopedic Surgery
- Biomedical Engineering
Background:
- The total condylar III knee prosthesis (TCP III) is a constrained, unlinked implant designed for medial and lateral knee stability.
- It utilizes a rectangular tibial post and a high femoral box for enhanced support.
Purpose of the Study:
- To evaluate the clinical outcomes and efficacy of the total condylar III knee prosthesis (TCP III).
- To determine the suitability of TCP III for complex primary and revision knee arthroplasties.
Main Methods:
- A retrospective analysis of 31 knees implanted with TCP III in 25 patients.
- Included 17 primary arthroplasties and 14 revision surgeries with an average follow-up of 3.8 years.
Main Results:
- Average arc of motion improved from 63 to 97 degrees.
- 77% of cases achieved good or excellent results.
- Five failures (16%) occurred exclusively in the revision group.
Conclusions:
- TCP III demonstrates favorable outcomes compared to other constrained prostheses, particularly for severe deformities and unstable revisions.
- Contraindicated in cases with massive bone loss; intramedullary stems are recommended for such scenarios.