The Hyperextension Tibial Plateau Fracture Pattern: A Predictor of Poor Outcome.

Abstract

To assess the outcome of patients with hyperextension bicondylar tibial plateau fractures (HEBTPs) and those with other complex tibial plateau fractures. Retrospective cohort design. Academic Medical Center. A total of 84 patients were included in the study. There were 69 patients with 69 knees (82%) that had sustained non-HEBTPs and 15 patients with 15 knees (18%) that had HEBTPs. Surgical repair of bicondylar tibial plateau fracture. Clinical and functional outcomes included knee range of motion, postoperative alignment, numerical rating scale pain scores, and Short Musculoskeletal Functional Assessment (SMFA) scores at long-term follow-up. Complications were recorded for both cohorts including infection and posttraumatic osteoarthritis. There was no difference in knee range of motion at 1-year follow-up between hyperextension and nonhypertension patients. Patients with hyperextension mechanisms did however have higher functional (SMFA) scores and a trend of higher pain scores, indicating worsened functional outcomes and were more likely than their nonhyperextension mechanism counterparts to have associated soft-tissue damage and to develop posttraumatic osteoarthritis. Non-HEBTP and HEBTP fracture patients have similar outcomes in terms of range of motion at approximately 1 year of follow-up, however, differ significantly in terms of functional recovery and the types of complications associated with their injuries. Prognostic Level III. See Instructions for Authors for a complete description of levels of evidence.