Arthroscopic Management for Patients with Secondary Femoroacetabular Impingement Resulting from Femoral Head Fracture Malunion in the Hip.

Femoral head fracture malunions resulting in femoroacetabular impingement syndrome are rare complications after the occurrence of femoral head fractures. A 26-year-old female, with a motor vehicle accident history two years prior to our consultation, experienced multiple injuries, including a posterior right dislocation with a femoral head fracture. Although the fracture achieved a successful union with no evidence of osteoarthritis or avascular necrosis, the patient continued to experience hip pain and limited range of motion. We report on a case of femoral head fracture malunion that led to femoroacetabular impingement syndrome. In this case, arthroscopic labral repair, osteoplasty of the femoral head malunion, and capsular closure were performed. At three years post-surgery, the patient was asymptomatic and reported significant improvements in validated hip scores. Arthroscopic management of secondary femoroacetabular impingement is minimally invasive, safe, and beneficial in the treatment of femoral head malunion of the hip.