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Intramuscular neural distribution of the teres minor muscle using Sihler's stain: application to botulinum neurotoxin injection

  • Kyu-Ho Yi (Division in Anatomy and Developmental Biology, Department of Oral Biology, Human Identification Research Institute, BK21 PLUS Project, Yonsei University College of Dentistry) ;
  • Soo-Bin Kim (Division in Anatomy and Developmental Biology, Department of Oral Biology, Human Identification Research Institute, BK21 PLUS Project, Yonsei University College of Dentistry) ;
  • Kangwoo Lee (Division in Anatomy and Developmental Biology, Department of Oral Biology, Human Identification Research Institute, BK21 PLUS Project, Yonsei University College of Dentistry) ;
  • Hyewon Hu (Division in Anatomy and Developmental Biology, Department of Oral Biology, Human Identification Research Institute, BK21 PLUS Project, Yonsei University College of Dentistry) ;
  • Ji-Hyun Lee (Department of Anatomy and Acupoint, College of Korean Medicine, Gachon University) ;
  • Hyung-Jin Lee (Department of Anatomy, Catholic Institute for Applied Anatomy, College of Medicine, The Catholic University of Korea)
  • Received : 2023.03.29
  • Accepted : 2023.05.16
  • Published : 2023.09.30

Abstract

The aim of this study was to elucidate the intramuscular arborization of the teres minor muslce for effective botulinum neurotoxin injection. Twelve specimens from 6 adult Korean cadavers (3 males and 3 females, age ranging from 66 to 78 years) were used in the study. The reference line between the 2/3 point of the axillary border of the scapula (0/5), where the muscle originates ant the insertion point of the greater tubercle of the humerus (5/5). The most intramuscular neural distribution was located on 1/5-3/5 of the muscle. The tendinous portion was observed in the 3/5-5/5. The result suggests the botulinum neurotoxin should be delivered in the 1/5-3/5 area of the teres minor muscle.

Keywords

Acknowledgement

The authors sincerely thank those who donated their bodies to science so that anatomical research could be performed. Results from such research can potentially increase mankind's overall knowledge that can then improve patient care. Therefore, these donors and their families deserve our highest gratitude.

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