The shoulder instability often results in a traumatic episode of anterior shoulder dislocation. The joint after the episode of dislocation should be reduced immediately (put in place). The shoulder may seem to return to normal, but the joint often remains unstable. The ligaments that hold the shoulder in the glenoid, along with the labrum, may get stretched or torn. This makes them too loose to keep the shoulder in engagement when it moves. This results in shoulder cracking or snapping.
Cartilage is a tissue present at the ends of bones and is responsible for the sliding between them. When there is motion in the joint, thanks to the lubricating synovial fluid and damping cartilage, bones between them slide with minimal friction. The osteoarthritis is cartilage degeneration. In the early stages of osteoarthritis the cartilage becomes rougher, thus increasing the friction during the movement of the joint causing sound of shoulder cracking and popping. The treatment of osteoarthritis must be performed early. There are no methods to prevent altogether the development of osteoarthritis, but there are ways to slow its deterioration and to avoid pain and chronic inflammation.