Presentation
History of motor vehicle accident.
Patient Data
The femoral head is displaced posteriorly with fracturing of the acetabular margins (altered signals of the posterior margin with two displaced fragments seen adjacent to the femoral head) and a tear of the labrum.
The layering of fat and blood products seen in the joint space is suggestive of lipohemarthrosis.
Altered signals are also seen in the right obturator externus and gluteus maximus muscle suggestive of edema or sprain.
Case Discussion
Posterior hip dislocation is more commonly seen in MVA. In this case, the MRI findings demonstrate right-sided hip joint posterior dislocation with lipohemarthrosis. There are displaced fragments of fractured acetabular margins with a tear of the acetabular labrum and muscle edema or sprain.
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