44-year-old male that sustained a contusion to his left shoulder while falling at his home. Following the fall he suffered severe pain. An ultrasound to the shoulder was interpreted as showing some changes in the ACJ and peritendinitis of the biceps brachi. The orthopedic surgeon that examined the patient about 2 weeks post injury had the impression of tendinopathy and requested an MRI that had indicated changes in signals in the ACJ and superior impingement of the supraspinatus and peritendinitis of the biceps. On the basis of these findings an arthroscopy was suggested.