[Diagnostic value of arthrography and MRI in rotator cuff tears].

OBJECTIVE

To prospectively compare arthrography with MRI to determine the sensitivity and specificity in detecting rotator cuff tear.

METHODS

53 shoulders were studied. All patients underwent both arthrography and MRI. The results were compared with the findings of arthroscopy or open surgery.

RESULTS

The sensitivity in demonstrating partial-thickness tears was 70% for arthrography and 80% for MRI; the specificity was 75% for arthrography or MRI. The sensitivity in detecting full-thickness tears was 87% for arthrography and 90% for MRI, and the specificity was 100% for arthrography and 75% for MRI.

CONCLUSION

The sensitivity of arthrography and MRI in detecting rotator cuff tears was identical. The specificity of arthrography in detecting full-thickness tears was higher that of MRI.