Diagnosis and Treatment for Cubital Tunnel Syndrome : Intraoperative Inching Technique

With serial stimulation of the ulnar nerve at the elbow the compound muscle action potentials and sensory nerve action potentials were recorded using ”inching technique” in 10 normal subjects and 16 ulnar nerve neuropathies. The motor axons and sensory axons normally showed a predictable latency change of 0.13 to 0.24ms/cm and 0.14 to 0.21ms/cm as the stimulus site was moved proximally in lcm increments in 10 normal subjects. Preoperatively in 14 of 16 ulnar nerve neuropathies abnormal conductions were sharply localized from lcm proximal to the medial epicondyle to 3cm distal. No compound muscle action potentials could be recorded in two patients. Then intraoperative inching techniques were performed in 10 patients. The findings were as follows. 1) Intraoperative conduction abnormality was localized and corresponded to tendinous arch which was confirmed intraoperatively. 2) Preoperative conduction abnromality was corresponded to intraoperative one. We suggest that Osborne method which is simple decompression is our treatment of choice for patients with cubital tunnel syndrome.

肘部菅症候群

インチング法

電気診断

尺骨神経障害

オズボーン法