期刊
TOXINS
卷 14, 期 5, 页码 -出版社
MDPI
DOI: 10.3390/toxins14050310
关键词
supraspinatus muscle; botulinum neurotoxin; shoulder pain; myofascial pain syndrome
资金
- Korea Medical Device Development Fund - Korea government (the Ministry of Science and ICT)
- Ministry of Trade, Industry and Energy
- Ministry of Health Welfare
- Ministry of Food and Drug Safety [202012D01]
- National Research Foundation of Korea (NRF) - Korean government (MSIP) [NRF2019R1C1C1010776]
This study used a modified Sihler's staining method to investigate the intramuscular neural arborization pattern of the supraspinatus muscle. The results provide anatomical evidence for the establishment of safe and effective injection sites in patients with myofascial pain.
Despite the positive effects of botulinum neurotoxin (BoNT) injection into the neural arborized area, there is no anatomical evidence in the literature regarding the neural arborization of the supraspinatus muscle. The present study aimed to define the intramuscular neural arborized pattern of the supraspinatus muscle using the modified Sihler's staining method to facilitate the establishment of safe and effective injection sites in patients with myofascial pain in the supraspinatus muscle. Seventeen supraspinatus muscles from 15 embalmed cadavers were dissected. Precise suprascapular nerve entry locations were also observed. Intramuscular neural arborization was visualized by Sihler's staining. The supraspinatus muscle was divided into four portions named A, B, C, and D. The nerve entry points were observed in 88.2% (15 of 17 cases) of section B and 76.5% (13 of 17 cases) of section C of the supraspinatus muscle, respectively. The concentration of intramuscular neural arborization was highest in section B of the supraspinatus muscle, which was the center of the supraspinatus muscle. When the clinician performs a trigger point and a BoNT injection into the supraspinatus muscle, injection within the medial 25-75% of the supraspinatus muscle will lead to optimal results when using small amounts of BoNT and prevent undesirable paralysis.
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