Is anterior transposition of the ulnar nerve necessary for post-traumatic elbow stiffness? A retrospective study

Abstract Objective To explore whether anterior transposition of the ulnar nerve is necessary in patients with post-traumatic elbow stiffness. Method This was a retrospective study of 177 patients with post-traumatic elbow stiffness treated at Shandong Provincial Hospital from 1 January 2012 to 31 October 2022. Sixty-one patients presented with ulnar nerve symptoms, and 116 patients had no nerve symptoms. Outcomes between patients with and without symptoms were compared using a range of clinical measures, namely range of motion (ROM), ulnar nerve symptoms, and various standardized scoring systems, namely, the Mayo Elbow Performance Score (MEPS), visual analog scale (VAS), improved Broberg and Morrey Score (BMS), Quick disabilities of the Arm, Shoulder, and Hand (DASH) score, Oxford Elbow Score (OES), and Amadio score. Results Open elbow release surgery significantly improved elbow joint function in patients with post-traumatic elbow stiffness, regardless of the presence of ulnar nerve symptoms. Patients with ulnar nerve symptoms showed significant improvement after anterior transposition compared with in situ release. For patients without ulnar nerve symptoms, there was no significant difference in outcomes between the two types of ulnar nerve surgery. Conclusion Anterior transposition of the ulnar nerve is preferable for patients with ulnar nerve symptoms, while the choice between anterior transposition and in situ release can be individualized for patients without symptoms, based on intraoperative findings.