We examined 50 @entity1 with @entity336 both clinically and radiologically. Two legally aborted fetuses were dissected. The mean age of the @entity1 was 16.2 years (newborn to 38) and the mean follow-up was 11.4 years (3 months to 34 years). The fetal hips and MRI of newborn @entity1 showed congruity and no significant @entity85 . Flexion @entity1159 of the hip became evident later in 93% and was progressive. The radiological appearance of the proximal femoral ossific nuclei was delayed and in 17% of males and 28% of females the ossific nuclei had not appeared by the age of 12 years. Radiological measurements differed considerably from reference values and were related to the rapid and progressive restriction of rotational movement and the increase in flexion @entity1159 . The typical findings were flattening and inferomedial bulking of the femoral head and a double-hump deformation. The changes in the hip led to secondary @entity571 before early middle age. We describe the clinical and radiological measurements which define the early @entity528 .

Development of the hip in XXXX .

@entity1 :: ('9606', 'Species') :: ['patients', 'infants'] @entity336 :: ('MESH:C536170', 'Disease') :: ['diastrophic dysplasia'] @entity571 :: ('MESH:D010003', 'Disease') :: ['osteoarthritis'] @entity1159 :: ('MESH:D003286', 'Disease') :: ['contracture'] @entity85 :: ('MESH:D009140', 'Disease') :: ['joint deformity'] @entity528 :: ('MESH:D009410', 'Disease') :: ['degeneration of the joint']
@entity336 :: (MESH:C536170,Disease) :: ['diastrophic dysplasia']
