QUADRILATERAL SPACE SYNDROME - FINDINGS AT MR-IMAGING

Shoulder pain due to compression of the axillary nerve by fibrous band s in the quadrilateral space has been termed the quadrilateral space s yndrome. Selective atrophy of the teres minor muscle, which is innerva ted by the axillary nerve, was demonstrated at magnetic resonance imag ing in three patients with clinical findings of the syndrome. This fin ding, in the appropriate clinical setting, is highly suggestive of the quadrilateral space syndrome, which is a potentially reversible cause of shoulder pain.