Posterior Hip Dislocation

Posterior Hip Dislocation ...

Posterior Hip Dislocation

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posterior hipdislocations

AP radiograph shows bilateral posterior hip dislocations. Both hips characteristically show posterior, superior locations, with internal rotation. Pubic ramus, right SI joint, & left acetabular disruption also present

• Usually, result of MVA
• 90% posterior, +/- posterior wall or column acetabular fx
• The mechanism is the posterior force on a flexed hip
• Complications: sciatic nerve injury (10%), AVN of the femoral head, myositis ossificans, DJD, occasional femoral head fx
• The femoral head comes to lie superolateral to the acetabulum
• CT: evaluate for loose bodies in joint (if present, requires operative tx)