Congenital dislocation of the knee

Congenital dislocation of the patella, Congenital patellar dislocation (CPD)


Type of disease: Rare conditions

Congenital dislocation of the knee, also known as congenital patellar dislocation (CPD), is a condition in which the knee cap (patella) is either dislocated at birth or becomes slowly dislocated over time. Although the condition may be present at birth, diagnosis often does not occur until after walking age. Symptoms are mostly visual and can be seen in an angling of the knees (genu valgum) and a rotation of the lower leg bone (tibia). An inability to fully bend the leg at the knee is also common.

CDP may be associated with other conditions such as Down syndrome and nail-patella syndrome, but it can also occur alone. Treatments for CDP include both surgical and nonsurgical options. CDP is not manually correctable as are some cases of patellar dislocation. If your baby has been diagnosed with congenital dislocation of the patella, talk with your baby’s doctor or specialist about the most current treatment options.

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