Objective To explore the clinical value of ultrasound in assessing morphological changes of supraspinatus muscle after rotator cuff repair in patients with rotator cuff injury.Methods Ninety-five patients with rotator cuff injury from our hospital were selected,all patients underwent shoulder arthroscopic rotator cuff repair,and the supraspinatus muscle morphology were observed by ultrasound before the operation and 6 months after the operation,the cross-sectional area(CSA)of the supraspinatus muscle,the intensity of the echogenicity(EI)and their differences(ΔCSA,ΔEI)were obtained,respectively.The above parameters were compared among patients with different severity and functional recovery of shoulder joints.The correlation between ΔCSA,ΔEI and functional recovery of shoulder joints were analyzed.Receiver operator curve(ROC)curve was drawn to analyze the diagnostic efficacy of ΔCSA and ΔEI alone and in combination in predicting functional recovery of the shoulder joint in patients with rotator cuff injuries.Results The preoperative and postoperative CSA of patients with rotator cuff injury was smaller than that of the healthy side,and EI was higher than that of the healthy side,the differences were statistically significant(both P<0.05).The preoperative and postoperative CSA of patients with total rotator cuff tear was smaller than that of patients with partial rotator cuff tear,and EI was higher than that of patients with partial rotator cuff tear,and the differences were statistically significant(all P<0.001).Comparison of CSA,EI,ΔCSA and ΔEI in patients with excellent,good,and acceptable results of shoulder joint function recovery preoperatively and 6 months postoperatively were statistically significant(all P<0.05),and the difference were statistically significant in pairwise comparison(all P<0.05).Correlation analysis showed that ΔCSA,ΔEI were positively correlated with the functional recovery of the shoulder joint(r=0.633,0.693,both P<0.05).ROC curve analysis showed that the area under the curve of ΔCSA and ΔEI in combination in predicting functional recovery of the shoulder joint in patients with rotator cuff injuries was 0.922,which was higher than that of ΔCSA and ΔEI alone(0.834,0.764),the differences were statistically significant(both P<0.05).Conclusion Ultrasound can effectively evaluate the morphologic changes of supraspinatus muscle after rotator cuff repair in patients with rotator cuff injury,which has good clinical value.
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