Table 1.

MR and MR arthography acetabular labral tears compared with arthroscopy

Labral tear	Labral tears	True positive	True negative	False positive	False negative	Sensitivity compared with arthroscopy (%)	Specificity compared with arthroscopy (%)
Tear on arthroscopy	42	42	1	0	0	100	100
Tear on 3.0-T MR Reader 1	39	38	0	1	4	90	0
Tear on 3.0-T MR Reader 2	38	37	0	1	5	88	0
Tear on 3.0-T MR arthrogram Reader 1	40	39	0	1	3	93	0
Tear on 3.0-T MR arthrogram Reader 2	39	38	0	1	4	90	0