Posterior hip dislocation associated with a femoral neck fracture and posterior acetabular wall fracture

Background: Posterior hip dislocation is an uncommon injury that often presents concomitantly with other injuries. However, the simultaneous presentation of posterior hip dislocation with femoral neck fractures and posterior acetabular wall fractures is exceptionally rare and presents with significant treatment challenges. The complexity arises from the cumulative complication rates associated with each injury, leading to an elevated overall risk.Case Presentation: A 30-year-old male was involved in a motorcycle collision, presenting with a shortened left lower extremity in adduction, internal rotation, and flexion. Physical examination revealed clinical signs of sciatic nerve injury. Radiographs and computed tomography revealed a posterior hip dislocation associated with a complete and displaced fracture of the femoral neck and the posterior rim of the acetabulum. Surgery was performed, beginning with the fixation of the femoral neck fracture, followed by reduction and fixation of the posterior wall fracture of the acetabulum.Conclusion: This case report describes a rare case of posterior hip dislocation with ipsilateral acetabular and femoral neck fractures. Due to its rarity, no classification currently includes this specific pattern of injury. We present a successful treatment approach for this injury, which, although rare, can be associated with severe sequelae.