Lateral Branch of the Thoracodorsal Nerve (LaT Branch) Transfer for Biceps Reinnervation.

Autor: Schusterman MA 2nd; Department of Plastic Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pa., Jindal R; Department of Plastic Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pa., Unadkat JV; Department of Plastic Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pa., Spiess AM; Department of Plastic Surgery, University of Pittsburgh Medical Center, Pittsburgh, Pa.
Jazyk: angličtina
Zdroj: Plastic and reconstructive surgery. Global open [Plast Reconstr Surg Glob Open] 2018 Mar 19; Vol. 6 (3), pp. e1698. Date of Electronic Publication: 2018 Mar 19 (Print Publication: 2018).
DOI: 10.1097/GOX.0000000000001698
Abstrakt: In cases of significant upper extremity trauma, the thoracodorsal nerve is a reliable secondary option for the restoration of elbow flexion. In all previous descriptions, however, the entire nerve is transferred. We describe a case utilizing the lateral thoracodorsal nerve (LaT) branch for biceps reinnervation with an associated cadaver study. Transfer of the LaT branch to the biceps branch was performed on a patient who had sustained a traumatic brachial plexus injury that left him without elbow flexion. Also, 4 cadavers (8 upper extremities) were dissected to identify the bifurcation of the thoracodorsal nerve and confirm the feasibility of transferring the LaT branch to the biceps motor branch. Axon counts of the thoracodorsal proper, LaT branch, musculocutaneous proper, and the biceps branch were also obtained. A bifurcation of the thoracodorsal nerve was present in all cadaver specimens, with an average distance of 7.5 cm (range, 6.2-9.8 cm) from the insertion of the latissimus dorsi muscle. Axon counts revealed a donor-to-recipient ratio of 0.85:1. Follow-up of our patient at 1 year showed improvement of elbow flexion manual muscle testing grade from 0 to 4/5. Furthermore, electromyography at 1 year confirmed biceps reinnervation and showed normal readings of the latissimus compared with preoperative electromyography. Transfer of the LaT branch is a viable and minimally morbid option for biceps reinnervation after traumatic branchial plexus injury. Further follow-up of our patient and larger prospective studies are needed to understand the true potential of this nerve transfer.
Competing Interests: Disclosure: The authors have no financial interest to declare in relation to the content of this article. The Article Processing Charge was paid for by the authors.
Databáze: MEDLINE