Congenital Dislocation of the Knee in a Newborn

Congenital dislocation of the knee (CDK) is a relatively rare condition with an estimated prevalence of 1 per 100 000 live births, which is approximately 1% of the incidence of developmental dysplasia of the hip1. It may occur in isolation, but often occurs in the presence of muscle imbalance such as that seen with arthrogryposis, Larsen syndrome, and myelomeningocele. CDK has also been reported to occur with other musculoskeletal abnormalities including developmental hip dysplasia, clubfoot, congenital vertical talus, and congenital dislocation of the elbow2.