SPONTANEOUS DISLOCATION OF THE HIP IN CHILDREN WITH DOWN SYNDROME
# This is a 3 year old female with Down's Syndrome whose mother noticed clicking in the left hip since age 2. At the age of 4 the patient developed a limp after falling from a bicycle. She is otherwise healthy and started walking at 24 months of age. Other significant medical history includes a recurrent otitis media. # PHYSICAL EXAM: A full range of motion was noted, with instability of the hip. The hip was easily dislocated and reduced. # XRAYS: The pre-operative x-ray, C T scan and operative arthrogram demonstrate the hip subluxated.

ISCHEMIC NECROSIS AS A COMPLICATION IN DELVELOPMENTAL DYSPLASIA
This is an 11 months old white male patient who had congenital dislocation of right hip. This was first detected 6 weeks of age. The patient was a breech child delivered by C-section. He is the first child for this 38 year old mother. At 6 weeks of age, he was placed in a Pavlik harness but this treatment was unsuccessful. Closed reduction was performed, but the hip redislocated. He was kept in an Ilfield brace for a short time and then had open reduction followed by 3 months in a spica cast. Following removal of the cast he redislocated again, and at that time the patient was referred to this Institute.