Triceps tongue versus olecranon osteotomy for intra-articular distal humeral fractures: a matched-cohort study.

Abstract

There are various approaches to the distal humerus when managing a distal humeral fracture, and controversy exists regarding which approach is optimal. The purpose of this study was to report the outcomes of the triceps tongue (TT) approach when used for osteosynthesis of AO type 13-A, B, and C distal humeral fractures. Secondarily, we aimed to compare the outcomes of the TT approach vs. olecranon osteotomy (OO) when used for osteosynthesis of AO type 13-C distal humeral fractures. We performed a retrospective review of patients with distal humeral fractures treated with open reduction-internal fixation by either a TT or OO approach between 2007 and 2019 at 2 separate institutions. TT patients with AO type 13-C fractures were matched to OO patients at a 1:1 ratio based on age, sex, and fracture characteristics. Surgical time, intraoperative blood loss, elbow motion, fracture union, complications, and Disabilities of the Arm, Shoulder and Hand scores were compared. A total of 28 patients treated with the TT approach were assessed, and the matched TT and OO cohorts each comprised 15 patients. The TT group showed less blood loss (119.3 mL vs. 268.5 mL, P=.03), had greater maximal flexion (126° vs. 116°, P=.03), and achieved a larger flexion-extension arc (108° vs. 93°, P=.05) than the OO group. In the OO cohort, 27% of patients had complications directly related to the OO, and OO patients had a higher rate of postoperative ulnar nerve neuritis (33% vs. 0%, P=.04). There was no difference in Disabilities of the Arm, Shoulder and Hand score (P=.08), procedure time (P=.2), total number of patients with ≥1 complication (P=.5), difficulty with union (P=.7), or number of patients requiring revision surgery (P=.7). The TT approach is a safe and effective approach for the treatment of distal humeral fractures. When compared with the OO approach for AO type 13-C fractures, the TT approach did not differ regarding functional outcomes but showed increased range of motion, decreased intraoperative blood loss, and a lower rate of postoperative ulnar nerve neuritis. The TT approach should be considered as a safe and reliable first-line approach for intra-articular distal humeral fractures because it allows adequate visualization of the articular surface, eliminates complications related to osteotomy including delayed union or nonunion and hardware failure or irritation, and allows for easy conversion to total elbow arthroplasty.