Concomitant compressive neuropathy of the ulnar and median nerves in the hand by midpalmar ganglion

Abstract

Ganglia are the most common benign tumor lesions affecting the hand [4,12]. They are typically asymptomatic but can be associated with peripheral nerve compression in the upper extremity. Volar wrist ganglia are the most common cause of ulnar neuropathy originating at or below the wrist [8]. Ganglia of the carpometacarpal joints are also common but typically do not cause ulnar neuropathy [6]. Even more rare is a ganglion causing a concomitant compressive neuropathy of the median and ulnar nerve. Here, we describe a case of a ganglion cyst of the third carpometacarpal joint simultaneously associated with compression of both the deep motor branch of the ulnar nerve and the median nerve.