Congenital dislocation of the patella

Area of Science:

• Orthopedics
• Pediatric Orthopedics
• Skeletal Dysplasias

Background:

• Congenital dislocation of the patella is a rare condition with two primary presentations: fixed lateral dislocation and obligatory dislocation.
• Fixed dislocation often occurs with syndromes like arthrogryposis, presenting with knee flexion contracture and lateral patellar tethering.
• Obligatory dislocation is characterized by complete patellar dislocation during knee flexion-extension cycles, often due to isolated patellofemoral dysplasia.

Observation:

• The fixed type of congenital patellar dislocation requires surgical intervention, typically involving lateral release and patellar realignment.
• Obligatory dislocation, while potentially less debilitating, may necessitate patellar rebalancing later in childhood due to its isolated dysplastic nature.
• The natural history of patellofemoral dysplasia and its impact on patellar stability are crucial considerations for treatment planning.

Findings:

• This work details the pathological changes associated with patellofemoral dysplasia.
• It outlines surgical techniques for correcting both fixed and obligatory congenital patellar dislocations.
• Understanding the specific type of congenital patellar dislocation is key to determining the appropriate surgical approach and timing.

Implications:

• Early and accurate diagnosis of congenital patellar dislocation types is essential for effective management.
• Surgical correction aims to restore normal patellar tracking and improve knee function.
• Further research into the long-term outcomes of different surgical techniques for congenital patellar dislocation is warranted.