This study aimed to examine the characteristic findings on MRI of dislocation of the long tendon of biceps brachii (LHB). We retrospectively evaluated MRIs of 16 cases of intact, complete rupture and dislocation of the LHB tendon with rotator cuff tears. We performed surgery in all cases and surveyed the LHB tendons. We examined the position, the edematous findings and the size of LHB tendons on the MRIs. It was useful to check the position of the LHB tendon at a distal level of the bicipital groove to detect any dislocation of the LHB tendon. Edematous findings around LHB tendon were found more often at the distal level than at the bicipital groove. Tendon size was not a characteristic of cases of dislocation of the LHB tendon.
