Treatment Modality of Distal Ulnar Head and Neck Fractures Associated With Operatively Treated Distal Radius Fractures Does Not Affect Outcomes.

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Background: This study compares the functional outcomes and complications between operatively and nonoperatively treated distal ulnar head and neck fractures associated with internal fixation of concomitant distal radius fractures. Methods: A 7-year retrospective chart review was performed to identify patients with operatively treated distal radius fractures associated with distal ulnar head and neck fractures. Ulnar styloid fractures were excluded. Fifty-eight patients who had a minimum of 6 months of follow-up were identified. Patients were divided into 3 treatment groups: nonoperative, open reduction internal fixation (ORIF), and distal ulna resection. Reviewed data included demographics, injury and treatment details, complications, and patient-reported outcome measures. Outcomes measures included Patient-Reported Outcomes Measurement Information System (PROMIS) Upper Extremity and Patient-Rated Wrist Evaluation (PRWE) surveys. Due to inadequate power, 5 patients treated with distal ulna resection were excluded from statistical analysis. Results: The average patient age was 56 years, with an average follow-up of 27 months. All patients underwent ORIF of the distal radius fracture. Distal ulna fractures were treated nonoperatively in 25 patients, with ORIF in 28 patients, and with distal ulna resection in 5 patients. There were no statistically significant differences in wrist or forearm range of motion, complication rates, secondary procedure rates, PRWE scores, or PROMIS scores between ORIF and nonoperative treatment. Conclusion: No differences in wrist or forearm range of motion, complication rates, secondary procedure rates, PRWE scores, or PROMIS scores were observed between ORIF and nonoperative treatment of distal ulnar head and neck fractures associated with operatively treated distal radius fractures.