Objective: To examine the sensorial electromyographic (EMG) changes in median nerve (MN) due to the presence of the palmaris longus (PL) muscle.
Methodology: After examining the presence/absence of PL in the dominant hand of 234 individuals with Schaeffer, Thompson, Pushpakumar and Mishra’s clinical tests, EMG measurements were made for all. Group 1 consisted of 177 individuals without PL and Group 2 of 57 individuals with PL. All were evaluated for carpal tunnel syndrome (CTS). Of 234 people, 38 had CTS, and 6 of them did not have PL, while 32 had PL.
Results: There was no statistical difference between the two groups in terms of MN conduction velocity and latency (p>0.05). There was no difference in sensorial EMG values between individuals with and without PL in individuals with CTS (p>0.05).
Conclusion: The presence or absence of the PL muscle did not make a difference in the MN sensory EMG values.
Key words: Palmaris longus, median nerve, electromyography.
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