Popping from both shoulders- joint\scapula when rotating and overhead. pain sometimes esp w/ ext rotation. xray showed nothing. what could cause?

Rotator cuff: It is possible to have rotator cuff problems with normal x-rays.An MRI scan is more sensitive. It is unusual for a young person to have problems with rotator cuff in the absence of trauma or repetitive activities which put a lot of stress on the shoulder joint.The "popping" sensation suggests a problem in the joints themselves as opposed to a problem with the spinal nerves that go to the shoulders.