Compression of the ulnar nerve and spasm of the ulnar artery in Guyon's canal caused by a hypermobile pisiform bone
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We describe compression of the ulnar nerve at Guyon's canal caused by a hypermobile pisiform bone and associated with spasm of the ulnar artery. Treatment included excision of the pisiform bone, and repair of the flexor carpi ulnaris, hypothenar musculature, a... ...
