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. 2023 Mar 7;5(3):284-289.
doi: 10.1016/j.jhsg.2023.01.012. eCollection 2023 May.

The Outcome of Single Versus Double Nerve Transfers in Shoulder Reconstruction of Upper and Extended Upper-Type Brachial Plexus Injuries

Emmanuel P Estrella  1   2 , Josephine E Mina  2 , Tristram D Montales  2
Affiliations

The Outcome of Single Versus Double Nerve Transfers in Shoulder Reconstruction of Upper and Extended Upper-Type Brachial Plexus Injuries

Emmanuel P Estrella et al. J Hand Surg Glob Online. .

Abstract

Purpose: The objective of this study was to compare the outcomes of a single nerve transfer (SNT) with double nerve transfer (DNT) in the restoration of shoulder function in patients with upper (C5-6) or extended upper-type (C567) brachial plexus injuries.

Methods: A retrospective review of patients with C5-6 or C567 brachial plexus injuries operated on with nerve transfers from January 1, 2005, to December 31, 2017, was completed. The outcomes between SNT and DNT groups were evaluated with the Filipino Version of the Disabilities of the Arm, Shoulder, and Hand (FIL-DASH) scores, pain scores, muscle strength recovery, and range of motion. A subgroup analysis on surgical delay (< or ≥ 6 months), diagnosis (C5-6 or C567), and length of follow-up (< or ≥ 24 months) was also performed. All statistical significance was set at P < .05.

Results: A total of 22 patients with SNT and 29 with DNT were included in this study. There was no significant difference between the SNT and DNT groups as to postoperative FIL-DASH scores, pain, recovery of ≥M4, and range of motion for shoulder abduction and external rotation, although the absolute values for shoulder function were greater in the DNT than the SNT group. There was no significant difference between the SNT and DNT groups for surgical delay, diagnosis, and length of follow-up. A stronger recovery of ≥M4 for external rotation was observed in the DNT group compared to the SNT group if nerve transfer was performed in less than 6 months (86% vs 41%).

Conclusions: The outcomes for shoulder function between the 2 groups were similar, although the DNT group performed slightly better, especially with external rotation. Patients operated on less than 6 months from injury will benefit more from DNT for shoulder function, especially for external rotation.

Clinical relevance: Double nerve transfer may result in improved shoulder function.

Keywords: Nerve transfer; Shoulder reconstruction; Upper-type brachial plexus injury.

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