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The effect of patellectomy on knee function
The Journal of Bone and Joint Surgery. American Volume
|June 11, 1976
Summary
Complete patellectomy (surgical removal of the kneecap) leads to more significant quadriceps weakness and instability than partial patellectomy. Both procedures equally reduce knee range of motion.
Area of Science:
- Orthopedic Surgery
- Biomechanics
- Rehabilitation Medicine
Background:
- Patellectomy is a surgical procedure involving the removal of the patella.
- Understanding the functional outcomes of partial versus complete patellectomy is crucial for patient recovery and rehabilitation protocols.
Purpose of the Study:
- To compare the functional outcomes of partial and complete patellectomy.
- To evaluate subjective complaints, physical findings, quadriceps strength, and knee motion post-surgery.
Main Methods:
- Retrospective evaluation of 33 patients following patellectomy.
- Assessment of subjective symptoms, objective physical examination, quadriceps strength testing, and knee range of motion during daily activities.
Main Results:
- Both partial and complete patellectomy resulted in comparable loss of active and passive knee range of motion.
- Complete patellectomy led to increased ligament instability, quadriceps atrophy, and reduced quadriceps strength compared to partial patellectomy.
- Complete patellectomy significantly decreased knee flexion during the stance phase of walking and stair negotiation.
Conclusions:
- Complete patellectomy imposes a greater deficit in quadriceps strength and knee stability than partial patellectomy.
- Functional limitations in gait, particularly during stair negotiation, are more pronounced after complete patellectomy.