HIP

Question 1

What is DDH?

Answer 1

Congenital idiopathi Hip dysplasia

• cogenital dislocation: supero-laterally
• dysplastic acertabulum: hourglass deformity

Aetiology: Genetic ligament laxity (relaxin sensitivity) + mechanical factors in utero e.g breech + postnatal factors

Question 2

Name two tests to help diagnose DDH?

Answer 2

• ortolani: relocation on abduction
• barlow: dislocation with adduction

Question 3

Mx of DDH? Complications?

Answer 3

• Dislocation: Treatment is cosmetic and prevents trandelenburg
• dyspasia: prevents abnormal loading, subluxing and pain
  
  • < 6months: Pavlik Harness
  • 6-18 months: traction, closed reduction, spica,
  • > 18 months: open reduction, pelvic osteotomy: prevents OA
• complication: AVN