High-Energy Transsyndesmotic Ankle Fracture Dislocation-Injury Characteristics, Radiographic Outcomes, and Factors Affecting the Rate of Posttraumatic Arthritis in Logsplitter Injuries.

Objectives: To investigate patient demographics, injury characteristics, radiographic outcomes, and identify risk factors for developing posttraumatic arthritis in high-energy transsyndesmotic ankle fracture dislocations or "logsplitter" injuries.

Design: Retrospective cohort study.

Setting: Academic level one trauma center.

Patients/participants: Twenty-seven adult patients with logsplitter injuries.

Intervention: All patients were treated with open reduction internal fixation, with possible addition of syndesmosis screw(s) and deltoid repair.

Main Outcome Measurements: The rate of posttraumatic arthritis at one year along with rate and reasons for reoperation.

Results: Twenty-seven patients were included with a mean follow-up of 14.5 ± 12.5 months. At one-year postoperative, 14 of the 20 patients (70%) demonstrated posttraumatic arthritis. Two patients (7.4%) went onto fusion. The reoperation rate was 51.9%. There was no significant difference in the arthritis rate with the number of syndesmosis screws used, quality of reduction, or addition of deltoid repair.

Conclusions: The logsplitter injury is one with devastating outcomes and high rates of arthritis; it should be considered separately from conventional ankle fractures. The role of deltoid repair remains unclear. Further study of this injury pattern is required.

Level Of Evidence: Prognostic Level IV. See Instructions for Authors for a complete description of levels of evidence.