Preoperative Angiography Can Guide Treatment of Post–Femoral Neck Fracture Capital Femoral Physeal Separation and Displacement: A Case Report

CASE A 13-year, 6-month-old boy sustained a Delbet type III femoral neck fracture with postoperative femoral head avascular necrosis (AVN) and subsequent capital femoral physeal separation (CFPS). Preoperative angiography revealed a patent artery of the ligamentum teres to the femoral head epiphysis, allowing our patient to undergo a modified Dunn procedure to maintain this artery and preserve his native hip. CONCLUSION Preoperative angiography allows for real-time identification of femoral head epiphyseal blood supply in patients with femoral head AVN complicated by CFPS and guides surgical treatment for hip preservation.