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Congenital dislocation of the patella
Clinical Orthopaedics and Related Research
|September 1, 1976
Summary
Congenital patellar dislocations often involve hypoplastic patellae and underdeveloped femoral grooves. Surgical intervention, including lateral release and medial transposition, significantly improved knee function in most patients.
Area of Science:
- Orthopedic Surgery
- Pediatric Orthopedics
- Biomedical Engineering
Background:
- Congenital patellar dislocation is a rare condition.
- Often associated with patellar hypoplasia, absent facets, and underdeveloped femoral intercondylar grooves.
- Can lead to significant functional impairment if untreated.
Purpose of the Study:
- To evaluate the clinical presentation and outcomes of surgical management for congenital patellar dislocation.
- To describe a specific surgical technique for addressing this condition.
- To assess the improvement in knee function post-operatively.
Main Methods:
- Surgical procedure involving lateral release of the patella.
- Medial transposition of the patellar tendon.
- Plication of the medial capsule or advancement of the vastus medialis.
- Evaluation of knee function pre- and post-operatively.
Main Results:
- Eight cases of congenital patellar dislocation were reviewed.
- Seven patients presented with permanent, irreducible lateral patellar dislocation.
- All but one patient showed improvement in knee function after surgical intervention.
- Surgical findings included hypoplastic patellae with absent facets and underdeveloped femoral grooves.
Conclusions:
- Congenital patellar dislocation presents with specific anatomical abnormalities.
- The described surgical technique is effective in improving knee function.
- Early surgical intervention may be beneficial for patients with congenital patellar dislocation.