Congenital dislocation of the knee (CDK) is a rare congenital anomaly and the incidence of the CDK is estimated as 1 per 100,000 births. Diagnosis is made through clinical inspection and X-ray radiography. Our patient is a newborn male with congenital dislocation of the left knee. After diagnosis, the knee was reduced successfully within 24 hours of birth and then serial casting was performed. After one year of follow-up, the knee appears normal and prognosis is excellent. In some reports the best time for reduction of dislocated knee is within 24 hours after birth and delayed reduction is suggested to increase the difficulty of treatment, but some authors have suggested waiting of 1 month for spontaneous reduction of CDK. The aim of this report is emphasis on early reduction of congenital dislocation of the knee, and also precise evaluation for ruling out related disorders.

Keywords: Congenital, Knee Dislocation, Deformity

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