上方関節唇の超音波下動態検査

抄録

Dynamic examination of the superior labrum was performed by Ultrasonography (US). The superior labrum of twentyseven baseball players ranging from seventeen to thirty six years were investigated with a superior approach in which the probe was fixed at the interval between the acromion and the clavicula. We observed the movement of the superior labrum when the arm was stressed inferiorlly at the neutral position and the arm was rotated externally at the cocking position. The labrum of type 2 SLAP lesion moved more backward than in the normal cases at the cocking position. The labrum of the type 3,4 SLAP lesion detached from the glenoid with the inferior stress. US findings were correlated w ith the arthoroscopic inspections. This revealed that in the detection of SLAP lesion, ultrasonography had a sensitivity of 73.3%, a specificity of 75.0%, an accuracy of 74.1%. These results demonstrated that US was useful in the diagnosis of a SLAP lesion.