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[Patellar resurfacing. Results of a prospective randomized study]
H Schroeder-Boersch1, G Scheller, M Synnatschke
1Orthopädische Universitätsklinik Mannheim, Klinikum Mannheim gGmbH, Fakultät der Universität Heidelberg.
Der Orthopade
|November 12, 1998
Summary
Patellar resurfacing in total knee arthroplasty shows good early results but carries risks. Leaving the patella unresurfaced may lead to more anterior knee pain and revisions.
Area of Science:
- Orthopedic Surgery
- Biomedical Engineering
Background:
- Patellar resurfacing is a debated topic in total knee arthroplasty (TKA).
- Complications can arise from both resurfacing and non-resurfacing techniques.
Purpose of the Study:
- To compare mid-term outcomes of patellar resurfacing versus non-resurfacing in TKA.
- To evaluate complications, pain, function, and radiological measurements.
Main Methods:
- Prospective randomized study with 40 patients (20 per group).
- Group A: Patellar resurfacing. Group B: No patellar resurfacing.
- Follow-up included clinical assessment (Knee and Function Scores) and radiological measurements.
Main Results:
- Patellar resurfacing group had one revision for loosening.
- Non-resurfacing group had 3 patellar subluxations (2 revised) and 4 cases of anterior knee pain.
- No significant difference in Knee and Function Scores, except for pain.
- Resurfaced patellae showed significantly less tilting radiologically.
Conclusions:
- Patellar resurfacing, with correct technique, yields good clinical results within 5 years.
- Non-resurfacing was associated with higher rates of anterior knee pain and revision in this study.