Ischial tuberosity avulsion fracture nonunions in the adolescent population treated with a posterior column screw: A case series of two patients.

Various surgical techniques exist to approach an ischial tuberosity avulsion fracture, including open reduction and internal fixation with screws and suture anchors, augmentation with allograft tendon, and excision of the fragment. However, the majority of these techniques approached acute fractures, and nonunions were not addressed nor studied. This case series describes two adolescent patients treated for ischial tuberosity nonunions with a posterior column screw through a subgluteal approach. Both patients demonstrated radiographic healing of their nonunion sites at 6 months' follow-up. Each patient reported no pain during activity, had symmetric hamstring strength, and were able to return to pre-injury level of activity by final follow-up. In conclusion, the authors utilized a muscle-sparing approach to the ischial tuberosity nonunion site through a cosmetically appealing incision and introduced a novel approach to nonunion fixation without the use of bone graft, resulting in excellent clinical outcomes.