The Leclercq test in diagnosis of tear in the rotator cuff.

The authors report their experience in using the Leclercq test to diagnose tear in the rotator cuff of the shoulder. When positive, this test consists in a radiographic demonstration of reduction in the subacromial space in opposing abduction of the shoulder. Twenty-five patients affected with chronic painful shoulder and suspected lesion of the rotator cuff were submitted to the Leclercq test and subsequently to arthrography in order to evaluate the conditions of the cuff. In all of the cases where the cuff was whole, and arthrography normal, the Leclercq test was negative. When lesion of the cuff was revealed by arthrography, the test was positive in 75% of the cases considered globally, and in 92% of the cases with complete tear in the rotator cuff.