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Outcome comparison of partial and full component revision TKA
Thomas K Fehring1, Susan Odum, William L Griffin
1OrthoCarolina Hip and Knee Center, Charlotte, NC 28207, USA. t.fehring@cosortho.com
Clinical Orthopaedics and Related Research
|October 22, 2005
Summary
Full component revision total knee arthroplasty yields better outcomes than partial revision, especially for instability or wear. Careful consideration is advised for partial revisions in knee surgery.
Area of Science:
- Orthopedic Surgery
- Biomedical Engineering
Background:
- Partial component revision offers advantages in hip replacement.
- The efficacy of partial revision in total knee arthroplasty is less established.
Purpose of the Study:
- To compare clinical and radiographic outcomes of partial versus full component revision total knee arthroplasty.
- To evaluate the effectiveness of partial revision strategies in knee revision surgery.
Main Methods:
- Retrospective review of 77 partial revision total knee arthroplasties (isolated femoral or tibial) from 1986-2000.
- Comparison of Knee Society scores between partial and full component revisions.
- Analysis of outcomes based on reasons for revision (instability, wear).
Main Results:
- Full component revisions showed significantly higher average Knee Society scores (85) compared to partial revisions (79).
- For instability, full revisions averaged 85 versus 63 for partial (p=0.0001).
- For wear-related problems, full revisions averaged 88 versus 78 for partial (p=0.03).
Conclusions:
- Full component revision total knee arthroplasty demonstrates superior clinical outcomes compared to partial revision.
- Caution is recommended when considering partial revision for total knee arthroplasty, particularly for instability or wear-related issues.