Congenital dislocation of the knee

Area of Science:

• Orthopedics
• Pediatric Orthopedics
• Congenital Musculoskeletal Disorders

Background:

• Congenital dislocation of the knee is a rare condition requiring prompt management.
• Associated musculoskeletal anomalies can complicate treatment and prognosis.
• Early diagnosis and intervention are crucial for optimal outcomes.

Purpose of the Study:

• To evaluate the outcomes of closed reduction for congenital knee dislocations in infants.
• To identify factors influencing treatment success and prognosis.
• To recommend optimal management strategies for congenital knee and hip dislocations.

Main Methods:

• Retrospective review of 24 congenital knee dislocations in 17 patients (February 1988 - June 1995).
• Treatment involved closed methods: immediate reduction, serial casting, or traction.
• Follow-up averaged 4 years and 10 months.

Main Results:

• Excellent or good results were achieved in cases without associated anomalies.
• Delayed treatment or conditions like arthrogryposis multiplex congenita and Larsen's syndrome led to fair or poor outcomes.
• Routine hip dislocation screening is recommended; concomitant knee and hip treatment with a Pavlik harness showed satisfactory results.
• Late genu valgus deformity management involved medial structure reconstruction and bracing.

Conclusions:

• Closed reduction is effective for congenital knee dislocation, particularly when performed early and without anomalies.
• Associated hip dysplasia requires careful evaluation and management, often concurrently with knee treatment.
• Proactive management of residual instability and deformities is essential for long-term joint health.