![]() The number of muscles examined could vary according to the tolerability level of the patient. The SNI protocol implemented in our EMG laboratory involved applying needle EMG to the tibialis anterior, medial gastrocnemius, peroneus longus, short head of biceps femoris, vastus lateralis, gluteus maximus, gluteus medius, and the 元, L4, L5, S1 paraspinal muscles. In the second analysis, the CMAP or SNAP amplitude of the nerve was considered abnormal if it was less than the reference value or 4 mV and/or its duration was >15 ms. In the first analysis, the CMAP or SNAP amplitude of the nerve was considered abnormal if it was less than the reference value. Peroneal, posterior tibial, superficial peroneal, and sural nerve conduction studies were performed in both lower extremities. Reference values for lower extremity nerve conduction studies were obtained from healthy participants. ![]() Methods: Patients with SNIII were included. We aimed to determine the role of this comparison in the diagnosis of SNIII. ![]() ![]() In this case, comparing the outcomes of nerve conduction studies of intact and affected lower extremities becomes important. Objectives: Although compound muscle action potential (CMAP) and sensory nerve action potential (SNAP) amplitudes of the nerves are reduced in sciatic nerve injury due to intramuscular injection (SNIII), they may still be higher than the reference values if there is a mild axonal degeneration.
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