If the hand is made into a fist with the thumb tucked in and bent towards the little finger, the pain gets worse. Wear and Tear Arthritis of the Hand Wear and tear arthritis is very common at the base of the thumb. Pain localized to the base of the thumb is a very common early symptom. What most people call the shoulder is really several joints that combine with tendons and muscles to allow a wide range of motion to the arm. Most shoulder problems involve soft tissue muscles, ligaments and tendons rather than bones.
Most tendinitis is a result of the wearing process that takes place over a period of years.
Rotator cuff injuries which may result from acute injury or degenerative changes in the tendon. The rotator cuff is the arrangement of muscles and their tendons which provide shoulder motion and stability. Sometimes the bones in one of the shoulder joints move out of their normal position . This condition, instability, can result in dislocation of one of the joints in the shoulder. Reoccurring dislocation cause pain and unsteadiness when you raise your arm or move it away from your body.