Objective To investigate the reliability of the morphologic measure of the iliotibial band (ITB) with musculoskeletal ultra-sound imaging. Methods 20 healthy young subjects were measured with the musculoskeletal ultrasound imaging of the thickness of bilateral ITB at the levels of the femoral condyle by 2 testers, and one of the testers measured again 3-5 days later. The intraclass correlation coeffi-cient (ICC) and minimum detectable change (MDC) were calculated, and the thickness of ITB in both sides was compared. Results The ICC of test-retest was 0.89 (R) and 0.85 (L), and it was 0.82 (R) and 0.84 (L) of inter-testers. The MDC was 0.41-0.51 mm. There was no signifi-cant different between right and left sides for the ITB thickness among healthy subjects (P=0.97). Conclusion Musculoskeletal ultrasound imaging is a feasible and reliable to measure the ITB thickness among young healthy subjects.%目的：研究肌肉骨骼超声成像测量健康青年髂胫束的信度。方法健康青年20名应用肌肉骨骼超声成像测量股骨外侧髁处髂胫束。先由两名测试者分别双侧膝关节髂胫束厚度，其中一名测试者3~5 d后重复测量一次。计算等级相关系数(ICC)和最小可检测变化值(MDC)，对比左右两侧髂胫束厚度。结果重复测量ICC为0.89(右侧)和0.85(左侧)，测试者间ICC为0.82(右侧)和0.84(左侧)。MDC为0.41~0.51 mm。左侧与右侧股骨外侧髁髂胫束的厚度无显著性差异(P=0.97)。结论肌肉骨骼超声成像测量健康青年人群股骨外侧髁处髂胫束厚度信度满意。
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