Masseter 肌肉深下肌腱的超声波分析:对肉毒杆菌毒素注射的影响

IF 3.9 3区 医学 Q2 FOOD SCIENCE & TECHNOLOGY Toxins Pub Date : 2024-09-11 DOI:10.3390/toxins16090391
Jia Shi, Chenyang Li, Jinbo Zhou, Xinyu Guo, Guo Li, Meng You
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引用次数: 0

摘要

(1) 背景:随着人们对面部特征的审美追求不断提高,临床上使用 A 型肉毒杆菌毒素(BoNT-A)注射治疗颌面肌肥大症的情况日益增多。然而,由于颌间肌结构的差异和临床医生注射技术的不同,盲目注射可能缺乏精确性,从而可能影响治疗的准确性并增加并发症的风险。(2) 目标:本研究旨在利用超声造影技术对中国年轻群体的颌间肌深下肌腱(DIT)进行详细描述,完善其分类,分析肌腹厚度和各组间的差异,并提出个性化的超声引导下 BoNT-A 注射方案。(3)方法:使用超声波成像技术观察双侧咀嚼肌在静止和紧握时的情况。根据这些图像对 DIT 的特征进行分类,并测量这两种状态下与 DIT 类型相关的咀嚼肌明显腹部的厚度。(4) 结果:研究对象包括 103 名参与者(27 名男性,76 名女性),其中正常颌面肌组有 30 块肌肉,肥厚组有 176 块肌肉。这些类型在正常组、肥厚组和性别组的分布一致,都遵循相同的趋势(B > A > C)。在肥厚型中,B1 型表现为整个咀嚼肌腹部厚度一致,B2 型表现为中间腹部较薄,而 C 型则主要是表层肌肉增大。紧握时肌肉厚度会发生变化,但不同肚皮之间的变化在统计学上并不显著。(5) 结论:该研究证明了 DIT 的个体差异,强调了精确的 DIT 分类对有效注射 BoNT-A 的重要性。根据这一分类制定的超声引导下 BoNT-A 注射策略可提高治疗的安全性和有效性。
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An Ultrasonographic Analysis of the Deep Inferior Tendon in the Masseter Muscle: Implications for Botulinum Toxin Injections
(1) Background: With the increasing aesthetic pursuit of facial features, the clinical use of Botulinum Toxin Type A (BoNT-A) injections for masseter hypertrophy has been on the rise. However, due to variations in masseter muscle structure and differences in clinicians’ injection techniques, blind injections may lack precision, potentially compromising treatment accuracy and increasing the risk of complications. (2) Objectives: The study aims to use ultrasonography to detail the deep inferior tendon (DIT) within the masseter muscle in a young Chinese cohort, refine its classification, analyze muscle belly thickness and variations across groups, and propose a customized ultrasound-guided BoNT-A injection protocol. (3) Methods: Ultrasound imaging was used to observe the bilateral masseter muscles at rest and during clenching. The features of the DIT were classified from these images, and the thickness of the masseter’s distinct bellies associated with the DIT types was measured in both states. (4) Results: The study cohort included 103 participants (27 male, 76 female), with 30 muscles in the normal masseter group and 176 muscles in the hypertrophy group. The DIT was categorized as Type A, B (subtypes B1, B2), and C. The distribution of these types was consistent across normal, hypertrophic, and gender groups, all following the same trend (B > A > C). In hypertrophy, Type B1 showed uniform thickness across masseter bellies, B2 presented with a thinner intermediate belly, and Type C had mainly superficial muscle enlargement. Changes in muscle thickness during clenching were noted but not statistically significant among different bellies. (5) Conclusions: The study evidences individual variation in the DIT, highlighting the importance of precise DIT classification for effective BoNT-A injections. A tailored ultrasound-guided BoNT-A injection strategy based on this classification may enhance safety and efficacy of the therapy.
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来源期刊
Toxins
Toxins TOXICOLOGY-
CiteScore
7.50
自引率
16.70%
发文量
765
审稿时长
16.24 days
期刊介绍: Toxins (ISSN 2072-6651) is an international, peer-reviewed open access journal which provides an advanced forum for studies related to toxins and toxinology. It publishes reviews, regular research papers and short communications. Our aim is to encourage scientists to publish their experimental and theoretical results in as much detail as possible. There is no restriction on the length of the papers. The full experimental details must be provided so that the results can be reproduced.
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