Table 2. Sensitivity, Specificity, and Accuracy for Detecting Acetabular Labral Tears and Chondral Lesions on MRI and CTA by Comparing with Arthroscopic Findings.

Variable	MRI		CTA
	Labral tear	Chondral lesion	Labral tear	Chondral lesion
Observer 1
Sensitivity (%)	60	36	85	46
Specificity (%)	80	84	90	72
Accuracy (%)	64	69	86	64
Observer 2
Sensitivity (%)	65	46	92	64
Specificity (%)	70	88	80	72
Accuracy (%)	69	75	89	69

MRI: magnetic resonance imaging, CTA: computed tomography arthrography.