Over time, movement of the shoulder causes additional wear and tear, leading to DJD. Patients experience pain and gradual limitation in movement. This is particularly noticeable on external rotation and abduction. Palpation of the joint with a hand placed on the shoulder during movement may reveal crepitus.ver time, movement of the shoulder causes additional wear and tear, leading to DJD. Patients experience pain and gradual limitation in movement. This is particularly noticeable on external rotation and abduction. Palpation of the joint with a hand placed on the shoulder during movement may reveal crepitus.