Case of Congenital Dislocation of Patella

Congenital dislocation of the patella - clinical case.

Congenital patellar dislocation is a rare condition in which the patella is permanently dislocated and cannot be reduced manually. The patella develops normally as a sesamoid bone of the femur. This congenital dislocation results from failure of the internal rotation of the myotome that forms the femur, quadriceps muscle and extensor apparatus. It usually manifests immediately after birth, alth...

Congenital lateral dislocation of the patella.

Congenital lateral dislocation of the patella is a rare condition caused by displacement of the extensor mechanism of the knee, which occurs before or shortly after birth (Malkin 1932). The patella is small and cannot be replaced in its normal position except by operation. This type of dislocation differs from recurrent or habitual dislocation of the patella, which occurs during childhood or ad...

An unusual case of patella dislocation.

Correspondence to: Dr Parfitt. A 9 year old boy presented to the accident and emergency department with a painful, tender swollen right knee. He had fallen 4 feet from a wall and struck his knee on the edge of a kerb. On examination the knee was held in a 45 degrees of fixed flexion. A 10 cm horizontal laceration extending to deep fascia was evident. Radiography (see fig 1) revealed the patella...

Complicated Congenital Dislocation of the Knee: A Case Report

  Congenital dislocation of the knee (CDK) is a rare disorder. We report the case of a 7-year-old girl with bilateral knee stiffness, marked anterior bowing of both legs, and inability to walk without aid. Radiologic investigation revealed bilateral knee joint dislocation accompanied by severe anterior bowing of both tibia proximally and posterior bowing of both femur distally, demonstrating ...

Recurrent dislocation of the patella.