Department of Ultrasound, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100144, China.
Department of Ear Reconstruction, Plastic Surgery Hospital, Chinese Academy of Medical Sciences and Peking Union Medical College, Beijing 100144, China.
J Plast Reconstr Aesthet Surg. 2024 Oct;97:212-220. doi: 10.1016/j.bjps.2024.07.009. Epub 2024 Aug 21.
This study aimed to prospectively investigate the reference values for masseter muscle thickness and hardness using ultrasonography and shear wave elastography, respectively, in patients with hemifacial microsomia (HFM).
We enrolled 51 patients, aged 5-20 years, with HFM including 31 males and 20 females. The upper-lower, left-right, and anterior-posterior diameters of 102 masseter muscles and stiffness of 98 masseter muscles were determined by examining the unaffected and affected sides of each participant's face.
The upper-lower, left-right, and anterior-posterior diameters of the masseter muscle were significantly smaller at rest (4.26 ± 0.83, 2.94 ± 0.75, and- 0.80 ± 0.25 cm, respectively) and during contraction (3.95 ± 0.78, 2.71 ± 0.78, and 0.87 ± 0.29 cm, respectively) in the affected side than those in the healthy side (5.45 ± 0.66, 3.87 ± 0.49, and 0.97 ± 0.20 cm, respectively, at rest and 4.99 ± 0.45, 3.49 ± 0.53, and 1.07 ± 0.23 cm, respectively, during contraction, p < 0.05). In the resting state, the hardness of the masseter muscle on the affected side (0.77 ± 0.66 m/s) was significantly greater than that on the healthy side (0.42 ± 0.41 m/s; p < 0.05). The magnitude of changes in the upper-lower, left-right, and anterior-posterior diameters of the biting muscle in the occlusal state were significantly smaller on the affected side (-0.30 ± 0.27, -0.23 ± 0.17, and 0.08 ± 0.08 cm, respectively) than those in the healthy side (-0.47 ± 0.38, -0.37 ± 0.25, and 0.10 ± 0.12 cm, respectively, p < 0.05).
The knowledge of these values allows for better understanding of the disease characteristics of HFM, which may be used for its diagnosis, treatment, and prognosis. Patients experiencing different severity levels exhibited significant differences in the morphology and function of the masseter muscle on the affected-side (p < 0.05).
Level III.
本研究旨在前瞻性地研究肌电图和剪切波弹性成像分别在单侧颜面短小症（HFM）患者中测量咬肌厚度和硬度的参考值。
我们招募了 51 名年龄在 5-20 岁的 HFM 患者，包括 31 名男性和 20 名女性。通过检查每位参与者面部的未受影响侧和受影响侧，确定了 102 块咬肌的上下、左右和前后直径以及 98 块咬肌的硬度。
在休息状态下，受影响侧的咬肌上下、左右和前后直径均明显小于健康侧（分别为 4.26±0.83、2.94±0.75 和-0.80±0.25 cm），在收缩状态下也明显小于健康侧（分别为 3.95±0.78、2.71±0.78 和 0.87±0.29 cm）（p<0.05）。在休息状态下，受影响侧咬肌的硬度（0.77±0.66 m/s）明显大于健康侧（0.42±0.41 m/s；p<0.05）。在咬合状态下，患侧咬肌上下、左右和前后直径的变化幅度明显小于健侧（分别为-0.30±0.27、-0.23±0.17 和 0.08±0.08 cm）（p<0.05）。
这些参考值的知识有助于更好地了解 HFM 的疾病特征，可用于其诊断、治疗和预后。不同严重程度的患者在患侧咬肌的形态和功能上表现出显著差异（p<0.05）。
三级。
