Long-term Outcome of Pediatric Arthroscopic Surgery for Avulsion Fracture of the Ligamentum Teres

Case: An 8-year-old boy experienced a traffic accident resulting in avulsion fracture of the ligamentum teres, preventing maintenance of hip joint congruity. Hip arthroscopy was performed to remove the teres and bone fragments. Three months postoperatively, he could walk without a cane. Fourteen years postoperatively, the patient remains well, and his International Hip Outcome Tool (iHOT-12, short version) score improved from 23 points preoperatively to 100. Conclusion: We performed arthroscopic hip surgery for managing a ligamentum teres avulsion fracture. This is the first report of the long-term results of arthroscopic treatment of this type of fracture in a pediatric patient.