Anatomy And Clinic Of The Dorsal Branch Of Ulnar Nerve Compression

objectives:To Investigate the mechanism of ulnar sided． rlst pain Induced by compression of the dorsal branch of ulnar nerve. Methods:Anatomical studies were done on 40 sides of dorsal branch of ulnar nerve in adult cadavers．The anatomy of this branchand its relation to the surroundingwas observed grosslyandmlcrography．Duringpasslve wrist flexlon and extension,the dorsal branch of ulnar nerve was observed．13 patients with dorsal branch ofulnar nerve compression were treated clinically． Results:The dorsal branch of ulnar nerve ran along the ulnar after leaving from the ulnar sided of the muscle flexor carpi ulnaris,then gave off 2 to 3 branches by ulnar sided of the the ulna capitulum．The transverse branch is very closed to the perlsteam when it crossing the ulna capltulum or distal side of the ulna cppitulum．Repeated movements of wrist and alterment of ulna capltulum is easy to injure this branch． Local injection and surgery is effective to decrease the symptoms． Conclusions:The repetitive traction and compression on the dorsal branch of ulnar nerve duringwrlst flexlon and extension Is the anatomical foundation of the dorsal branch of ulnar nerve compression．The compression of dorsal branch of ulnar nerve should be consldeled when we treating a patient whose have ulnar side wrist pain and abnormal sense．...