Unilateral All Ulnar Hand Including Sensory Without Forearm Communication

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Kim BJ, Date ES, Lee SH, Lau EW, Park MK: Unilateral all ulnar hand including sensory without forearm communication. Am J Phys Med Rehabil 2004;83:569–573.

The prevalence of “ulnar hand” is extremely rare. In the ulnar hand, all the intrinsic hand muscles are innervated exclusively by the ulnar nerve; however, all reported cases have been limited to ulnar motor innervation. We present a case that demonstrated exclusive unilateral ulnar motor and sensory innervation. Although the all ulnar hand is extremely rare, an awareness of this variation is essential for the correct interpretation of the findings on electrodiagnostic examination.

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