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A midvastus muscle-splitting approach for total knee arthroplasty
G A Engh1, B T Holt, N L Parks
1Anderson Orthopaedic Research Institute, Arlington, Virginia 22206, USA.
The Journal of Arthroplasty
|April 1, 1997
Summary
The midvastus muscle-splitting approach offers an effective alternative for total knee arthroplasty, demonstrating comparable patellar stability and quadriceps strength to the traditional medial parapatellar method.
Area of Science:
- Orthopedic Surgery
- Knee Arthroplasty
- Surgical Approaches
Background:
- The medial parapatellar approach is a standard surgical technique for total knee arthroplasty.
- Modifications to surgical approaches aim to improve outcomes and minimize complications.
Purpose of the Study:
- To evaluate a modified midvastus muscle-splitting approach as an alternative to the medial parapatellar approach in total knee arthroplasty.
- To compare the efficacy of the two surgical approaches regarding surgical exposure, patellar stability, and quadriceps strength.
Main Methods:
- A prospective randomized study involving 118 consecutive total knee arthroplasties performed by a single surgeon.
- Patients were randomized to either the medial parapatellar or midvastus muscle-splitting approach.
- Outcomes assessed included frequency of lateral retinacular releases, patellar tilt and translation, and quadriceps strength.
Main Results:
- The midvastus muscle-splitting approach provided excellent surgical exposure in all cases.
- No significant differences were found in patellar stability between the two approaches.
- Quadriceps strength outcomes were equivalent for both the medial parapatellar and midvastus muscle-splitting groups.
Conclusions:
- The midvastus muscle-splitting approach is an efficacious and viable alternative to the medial parapatellar approach for primary total knee arthroplasty.
- This modified approach achieves comparable functional outcomes to the traditional method.