Selective contralateral c7 transfer in posttraumatic brachial plexus injuries: a report of 56 cases

Julia K Terzis, Zinon T Kokkalis
Plastic and Reconstructive Surgery 2009, 123 (3): 927-38

BACKGROUND: Large experience in Asia has shown that the contralateral C7 nerve transfer has proved one of the major treatments for brachial plexus root avulsions. The authors report their experience in North America using the selective contralateral C7 transfer for neurotization of multiple targets.

METHODS: A retrospective review of 56 patients with posttraumatic root avulsion brachial plexus injuries who underwent contralateral C7 transfer using selective technique was conducted. The targets included the axillary, musculocutaneous, radial, and median nerves. Additionally, neurotization of future free muscle transplantation was performed. The mean follow-up period was 6.1 years (range, 2.5 to 14 years).

RESULTS: Motor recovery reached a level of M3+ or greater in 20 percent (two of 10) of patients for the deltoid, 52 percent (12 of 23) for the biceps, 24 percent (five of 21) for the triceps, 34 percent (10 of 29) for the wrist and finger flexors, and 20 percent (two of 10) for the wrist and finger extensors. In addition, sensory recovery of S2 or greater was achieved in 76 percent (22 of 29) of patients with median nerve neurotization. As far as the postoperative morbidity of the donor limb, by 6 months, there was no discernible motor or sensory deficit. Patients with a surgical delay of 9 months or less and patients aged 18 years or younger achieved significantly better results.

CONCLUSIONS: Brachial plexus root avulsions, long considered to be irreparable, are by no means unreconstructable. The selective contralateral C7 transfer appears to be a safe procedure, and it can be successfully applied for simultaneous reconstruction of several different nerves and/or for neurotization of future free muscle transfers.

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