PURPOSE: We reviewed @entity1 with partial supraclavicular @entity2685 in order to refine the myotome values of the upper limb. METHODS: Forty-two @entity1 with defined partial injuries to the supraclavicular brachial plexus were reviewed from a prospective database. The injuries patterns covered C5, @entity9509 , C5-7, C5-8, C7-T1 and C8-T1 roots. Upper @entity130 were classified on the basis of surgical exploration and intraoperative stimulation and lower @entity130 from MRI. RESULTS: Flexor Carpi Radialis (FCR) was paralyzed in C5-7 injuries, in addition to @entity912 of deltoid, supraspinatus, infraspinatus and biceps, when compared to @entity9509 injuries. Complete @entity912 of Flexor Digitorum Profundus (FDP) and Flexor Digitorum Superficialis (FDS) to all digits was identified in C7-T1 injuries. In C5-8 injuries weakness was noted in FDP of ulnar digits and intrinsics innervated by the ulnar nerve, while in C8-T1 injuries @entity912 was noted in the FDP to the radial digits. All @entity1 with C8-T1 injuries had @entity912 of FDS and the thenar muscles. CONCLUSIONS: In upper @entity130 @entity912 of FCR indicated involvement of C7 root in addition to C5 and C6 roots. The results provide new detail of innervation of muscles acting on the hand. Flexor muscles and intrinsic muscles of the thumb and radial fingers (median nerve) have an important contribution from T1, while for those acting on the ulnar digits (ulnar nerve) the main contribution is from C8 with some input from C7. T1 also gives consistent innervation to extensor pollicis longus. A revised myotome chart for the upper limb is proposed.

Refinement of myotome values in the upper limb: Evidence from XXXX .

@entity1 :: ('9606', 'Species') :: ['patients'] @entity9509 :: ('3434', 'Gene') :: ['C5-6'] @entity912 :: ('MESH:D010243', 'Disease') :: ['paralysis'] @entity130 :: ('MESH:D014947', 'Disease') :: ['plexus injuries'] @entity2685 :: ('MESH:C536265', 'Disease') :: ['brachial plexus injuries']
@entity2685 :: (MESH:C536265,Disease) :: ['brachial plexus injuries']
