This is a condition where the biceps tendon pulls the labrum from the glenoid (the socket part of joint) from the front to the back.
The labrum is the cartilage rim around the socket which helps keep the ball of the joint in place.
People who do overhead or contact sports are at risk of SLAP lesions.
Symptoms can be pain and a clicking sound.
For more details, including suggested treatments, see the page on Labral Tears.