Abstract
In irreparable C5, C6 spinal nerve and upper truncal injuries the proximal root stumps
are not available for grafting, hence repair is based on nerve transfer or neurotization.
Between Feb 2004 and May 2006, 23 patients with irreparable C5, C6 or upper truncal
injuries of the Brachial Plexus underwent multiple nerve transfers to restore the
shoulder and elbow functions. Most of them (16 patients) sustained injury following
motor cycle accidents. The average denervation period was 5.3 months. Shoulder function
was restored by transfer of distal part of spinal accessory nerve to suprascapular
nerve, and transfer of radial nerve branch to long head of triceps to the anterior
branch of axillary nerve. Elbow function was restored by transfers of ulnar and median
nerve fascicles to the biceps and brachialis motor branches of musculocutaneous nerve.
All patients recovered shoulder abduction and external rotation; 7 scored M4 and 16
scored M3. Range of abduction averaged 1230(range, 800-1700). Full elbow flexion was restored in all 23 patients; 15 scored M4 and 8 scored M3.
Patients with excellent results could lift 5 kgs of weight. Selective nerve transfers
close to the target muscle provide an early and good return of functions. There is
negligible morbidity in donor nerves. These intraplexal transfers are suitable in
all cases of upper brachial plexus injuries.
Keywords
brachial plexus injury - C5-C6 injuries - upper truncal lesions - nerve transfers