Clinical study of dynamic two-dimensional shear wave elastography in quantifying hand spasm after stroke
Objective To study the feasibility of dynamic two-dimensional shear wave elastography(2D-SWE)in measuring relaxation angle to quantify extensor digitorum spasm in stroke patients.Methods A total of 30 patients with hand spasm after stroke admitted to our hospital from March 2022 to April 2023 were selected as the study group,and 30 healthy people who underwent physical examination in our hospital from January to April 2023 were selected as the control group.The relaxation angle was measured by 2D-SWE,the joint angle-elastic modulus curve of extensor digitorum was recorded,the modified Ashworth scale(MAS)was evaluated,and the correlation between relaxation angle and MAS was tested.Results The relaxation an-gle was significantly correlated with MAS(rs=-0.876,P<0.001).The elastic parameters E0[(10.15±0.75)kPa]and extensor relaxation angle[(-26.51±4.87)°]in the study group were significantly lower than those in the control group[(11.94±0.91)kPa,(-19.86±3.77)°],the differences were statistically sig-nificant(P<0.05).Conclusion 2D-SWE measurement of extensor relaxation angle can quantify the degree of hand spasm after stroke.
StrokeHand spasmTwo-dimensional shear wave elastographyCorrelation research
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