Traumatic Hip Dislocation | Figure 1

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Traumatic Hip Dislocation

Image description

AP pelvis radiograph (image 1) shows lateral displacement of the right femoral head (arrow) from the acetabulum. Axial (image 2) and three-dimensional reconstructed (image 3) CT images show posterior and lateral dislocation of the hip (arrow) with external rotation of the femoral head.

Teaching point

Posterior hip dislocation typically results from high-energy trauma. On physical examination, the affected limb is classically shortened, flexed, adducted, and internally rotated, reflecting posterior displacement of the femoral head. CT is used to assess alignment, identify associated fractures, and evaluate for intra-articular fragments following reduction.

Diagnosis added by author

Traumatic Hip Dislocation

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