O2166 ELBOW FLEXION REANNIMATION VIA MUSCULOCUTANEOUS NEUROTIZATION IN BRACHIAL PLEXUS PALSY: PRELIMINARY RESULTS

Abstract

Aim: To study the functional outcome ofmusculocutaneous nerve neurotization in brachial plexus palsy patients. Methods: From 1998 to 2001, 51 adult patients (mean age 24,6 years) with posttraumatic brachial plexus palsy were operated. Exploration of the brachial plexus was performed in 39 patients with a mean denervation time of 6 months (1 to 14 months). Seven patients had an extended infraclavicular lesion, while from the 32 supraclavicular lesions, 21 had the element of avulsion (4 global, 10 four-root and 7 three-roots avulsions). Neurotization of the musculocutaneous was performed in 25 via nerve grafts from intraplexus donors (C5, C6, C7)and from extraplexus donors in 14. In 7 patients, the phrenic was used alone or with intraplexus donor (5), in 3 cases the accessory nerve, in one patient the accessory and cervical plexus motor branches and þnally in 3 patients 3 intercostal nerves were used. Results: All intraplexus neurotizations of the musculocutaneous nerve, but two, regained useful biceps function (M3+ to M4+). From the extraplexus neurotizations the phrenic n. as a conjunctant donor gave functional result, when used alone gave M3 and M3−; the accessory n. gave M3+ in combination with cervical motors and M3− when used alone. The intercostal neurotizations gave M2+ and M3−. Conclusions: In brachial plexus paralysis, when avulsion is present the reconstruction often is based in extraplexus donors. The return of biceps function is greater and faster when intraplexus donors are used. Extraplexus neurotizations yield satisfactory results used in combinations Vertebral osteoporosis and fracture