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One of the methods for CTS diagnosis is to compare distal motor latencies between median and ulnar nerves. In the previous research distal motor latency (DML) of ulnar nerve was recorded from hypothenar area and the median nerve DML was recorded from thenar. In this research we recorded DML of ulnar nerve from thenar area and compared it with DML of median nerve. The aims of this research is to shorten the process of electro diagnosis by preserving the sensitivity. The type of the research is diagnostic clinical trial on 42 normal person and 64 patients with CTS that referred to department of physical medicine and rehabilitation of Shohada Tajrish Hospital in fall and winter of 2000-01 participated in this research. The result of the research is analyzed by student T-test method. The DML of ulnar nerve recorded from thenar in normal persons was 3.52±0.5 ms and the difference between median and ulnar nerve recorded from thenar was 1.23 ms. The P-value of the study were less than 0.0001 that is significant thus this method can be used for diagnosis of CTS.

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Background and Objective: Carpal tunnel syndrome (CTS) is one of the most common disease among the entrapment neuropathies. The purposes of this study was to compare the efficacy of a new dorsal wrist splinting versus common palmar splinting for CTS based on sensory nerve conduction measurements. Materials and Methods: This single blind randomized control trial study was carried out on 22 idiopathic CTS patients. Subjects were randomly divided in two groups: Dorsal splint group (n=12) and palmar splint group (n=10). Both groups used splints for 4 weeks. Sensory conduction study of median nerve were done initially for having baseline and after 4 weeks follow up. SPSS-16 and Kolmogorov–Smirnov, independent T, and paired T tests were used for analysis of Data Results: After four weeks median nerve sensory distal latency and conduction velocity improved significantly in both groups (P<0.05). There was significant difference between both groups due to electro-diagnostic improvement. Conclusion: This study showed that based on electro-diagnostic method, dorsal wrist splint is more effective than cockup splint in carpal tunnel syndrome.