• Yonsei medical journal · Sep 2023

    Intramuscular Neural Distribution of Adductor Pollicis Muscle Spasticity in Cadaver Model Regarding Botulinum Neurotoxin Treatment.

    • Kyu-Ho Yi, Kang-Woo Lee, Yousun Hwang, Min Ho An, Hyo-Sang Ahn, Hyewon Hu, Ji-Hyun Lee, and Hyung-Jin Lee.
    • Division in Anatomy and Developmental Biology, Department of Oral Biology, Human Identification Research Institute, BK21 FOUR Project, Yonsei University College of Dentistry, Seoul, Korea.
    • Yonsei Med. J. 2023 Sep 1; 64 (9): 581585581-585.

    PurposeThe adductor pollicis muscle is frequently targeted for botulinum neurotoxin injective treatment for spasticity. However, there are no injective guidelines for delivering injection to the muscle.Materials And MethodsA method known as the modified Sihler's method was used to stain the adductor pollicis muscle in 16 specimens to reveal intramuscular neural distribution of the muscle.ResultsThe most intramuscular neural distribution was located on 1/5 to 3/5 of the muscle regarding midline of 3rd metacarpal bone (0) to the base of the 1st proximal phalanx (5/5). The nerve entry point was mostly located on 0 to 1/5 of the muscle.ConclusionThe result suggests that botulinum neurotoxin should be delivered at the middle of second metacarpal bone via deep injection.© Copyright: Yonsei University College of Medicine 2023.

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