[23,24] It has been shown that motor fibers
innervating the thenar muscles are relatively protected, compared to motor branches of the lumbrical muscles.
Considering topographical convergence along the descending motor fiber
pathway, a cerebral infarct causing monoparesis in the subcortical region tends to be rare and, if any, would possibly be small and solitary.
Besides that, the understanding of this anatomic variation can help clinic and electromyography's diagnose of peripheral nerve lesions, as this anomalous branch might contain both sensory and motor fibers
of palmar region.
The first CAP component had a mean conduction velocity of 85.4 [+ or -] 2.34 m/s and this range of velocity is characteristic of A[alpha] motor fibers
. For the second CAP component, the mean conduction velocity was 30.8 [+ or -] 1.11 m/s and this velocity comprises A[beta] myelinated sensory fibers and A[gamma] myelinated motor fibers