The aim of this study was to identify the effects of fascia penetration on superficial radial sensory nerve action potential amplitude.
The penetration point (PP) at which the nerve penetrated the brachioradialis fascia and became superficial was observed using ultrasonography. The sensory nerve action potential amplitude was measured at five points: the penetration point, 2 and 4 cm proximal to the PP, and 2 and 4 cm distal to the PP.
The sensory nerve action potential amplitude at the penetration point and at 2 and 4 cm distal to the PP was significantly larger than that at 2 and 4 cm proximal to the PP. The largest amplitude was obtained 2 cm distal to the PP.
The sensory nerve action potential of the superficial radial nerve changes significantly around the fascia penetration point.
*Department of Rehabilitation Medicine, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul, South Korea; and
†Department of Rehabilitation Medicine, Korea University College of Medicine, Seoul, South Korea.
Address correspondence and reprint requests to Sun Jae Won, MD, PhD Department of Rehabilitation Medicine, Yeouido St. Mary's Hospital, College of Medicine, The Catholic University of Korea, Seoul 07345, South Korea; e-mail: email@example.com.
The authors have no funding or conflicts of interest to disclose.
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