Posterior Hip Dislocation Associated with Ipsilateral Femoral Head Fracture: A Case Report

Posterior hip dislocation accounts for 75% of hip dislocations; its association with a femoral head fracture is a rare condition (6 to 28% of posterior hip dislocations). We report the case of a posterior dislocation with ipsilateral fracture of the femoral head classified as PIPKIN II in a 30-year-old man following a road traffic accident, surgically treated with reduction of the dislocation and then internal fixation of the femoral head by direct screwing. After 18 months of follow-up, the patient showed good clinical and radiological progress, with a Merle d'Aubigné score modified by Matta of 16 points out of a maximum of 18. The main complications are avascular osteonecrosis of the femoral head and coxarthrosis, hence the need for rapid and appropriate management.