Marfanoid features and X-linked mental retardation associated with craniofacial abnormalities: the Lujan-Fryns syndrome

Abstract

, in 1911, reported the first description of this anatomical variation based on a forearm dissection. He found only the posterior radial nerve interosseous branch with ab-sent SRN, below the elbow. On the dorsum of the hand, the LACN extended out beyond its usual distribution to sup-ply the SRN territory (Figure). The dorsal branch of the ulnar nerve had greater ramifications than those usually observed by completing the innervation of the dorsal hand. Other au-thors