《Chinese Journal of Rehabilitation Theory and Practice》 ›› 2021, Vol. 27 ›› Issue (7): 791-796.doi: 10.3969/j.issn.1006-9771.2021.07.009

Previous Articles     Next Articles

Measurement of Structure and Stiffness of Gastrocnemius Muscle for Stroke Patients with Multimodal Ultrasound Imaging

CHEN Ming-zhen1a,JIANG Fan1a(),SHAN Yong1a,HONG Yong-feng1b,LIU Xue1a,XIAO Hong-bo2,CHEN Rui-quan2   

  1. 1. a. Department of Ultrasonic Diagnosis; b. Rehabilitation Department, the Second Affiliated Hospital of Anhui Medical University, Hefei, Anhui 230601, China
    2. Department of Acupuncture and Moxibustion Rehabilitation Center, the First Affiliated Hospital of Anhui University of Traditional Chinese Medicine, Hefei, Anhui 230031, China
  • Received:2020-11-16 Revised:2021-06-02 Published:2021-07-25 Online:2021-07-28
  • Contact: JIANG Fan E-mail:ahultrasound2005@126.com

Abstract:

Objective To apply multimodal ultrasound imaging in spasticity assessment for stroke patients with hemiplegia.

Methods From March to September, 2019, 44 inpatients with lower limb spastic hemiplegia after stroke (patients) and 46 healthy volunteers (controls) were scanned with two-dimensional ultrasound imaging, shear wave elastography and super microvascular imaging at the same area of gastrocnemius muscle of both sides of patients and right side of controls, in resting and maximum isometric contraction. The parameters of shear wave velocity (SWV), blood flow signal, pinnation angle (PA), fascicle length (FL) and muscle thickness (MT) were recorded.

Results SWV increased in the affected side of the patients compared with those of the unaffected side and controls in resting (t > 6.346, P < 0.01), while FL shortened (|t| > 6.235, P < 0.01), MT and PA changed compared with those of the unaffected side (|t| > 2.198, P < 0.05), and blood flow signal decreased compared with those of the controls (t = 2.604, P < 0.05). In maximum isometric contraction, the decrease of FL was less compared with those of the unaffected side and controls (Z > 6.703, P < 0.001).

Conclusion Ultrasound imaging can quantitatively evaluate spasticity of gastrocnemius muscle for patients with stroke in terms of morphological structure, blood flow, and muscle stiffness.

Key words: stroke, spasticity, ultrasound, muscular tension, assessment

CLC Number: