Botulinum neurotoxin injection in the deltoid muscle: application to cosmetic shoulder contouring
- Authors
- Yi, Kyu-Ho; Lee, Ji-Hyun; Hu, Hyewon; Park, Hyun-Jun; Lee, Hyung-Jin; Choi, You-Jin; Kim, Hee-Jin
- Issue Date
- Jul-2023
- Publisher
- SPRINGER FRANCE
- Keywords
- Deltoid muscle; Hypertrophy shoulder; Shoulder contouring; body contouring; botulinum neurotoxin; Injection point; Intramuscular neural distribution
- Citation
- SURGICAL AND RADIOLOGIC ANATOMY, v.45, no.7, pp.875 - 880
- Journal Title
- SURGICAL AND RADIOLOGIC ANATOMY
- Volume
- 45
- Number
- 7
- Start Page
- 875
- End Page
- 880
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/88397
- DOI
- 10.1007/s00276-023-03163-2
- ISSN
- 0930-1038
- Abstract
- Background and objectivesThis study describes the intramuscular nerve branching of the deltoid muscle in relation to shoulder surface anatomy, with the aim of providing essential information regarding the most appropriate sites for botulinum neurotoxin injection during shoulder line contouring.MethodsThe modified Sihler's method was used to stain the deltoid muscles (16 specimens). The intramuscular arborization areas of the specimens were demarcated using the marginal line of the muscle origin and the line connecting the anterior and posterior upper edges of the axillary region.ResultsThe intramuscular neural distribution of the deltoid muscle had the greatest arborization patterns in the area between the horizontal 1/3 and 2/3 lines of the anterior and posterior deltoid bellies, and 2/3 to axillary line in middle deltoid bellies. The greatest part of the posterior circumflex artery and axillary nerve ran below the areas with the highest aborizations.ConclusionWe propose that botulinum neurotoxin injections should be administered in the area between the 1/3 and 2/3 lines of the anterior and posterior deltoid bellies, and 2/3 to axillary line on middle deltoid bellies. Accordingly, clinicians will ensure minimal dose injections and fewer adverse effects of the botulinum neurotoxin injection. Deltoid intramuscular injections, such as vaccines and trigger point injections, should ideally be adapted according to our results.
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