and the abductor pollicis brevis (APB) muscles are preferentially affected in patients with ALS, with relative sparing of the abductor digiti minimi (ADM) muscle. The ‘split-hand plus sign’ has been ...
Plantar responses were flexor. An examination of the sensory system revealed a normal ... in the right median and ulnar nerve, and normal compound muscle action potentials (CMAPs) in the right ...