developmental dysplasia of the hip

aka: congenital hip dislocation (CDH or CHD)

females (80-90%), 2/3 are firstborn
white > blacks
associated:
- breech delivery (6x cephalic),C-section, torticolis, family history
due to ligamentous laxity from increased circulating maternal estrogen, not acetabular dysplasia
unilateral LEFT (70%); bilateral in only 5%
Putti's triad
1. supero-lateral migration of femoral head
2. increased acetabular angle
3. small capital femoral epiphysis

Charles E. Kahn, Jr., MD - 2 February 1995
Last updated: 1 October 2013