The shoulder is one of the most movable joints which also makes the joint one of the most unstable. Injuries can easily occur and therefore your bodies’ protective mechanisms kick in to protect the joint such as inflammation and osteoblasts (bone formation) which results in arthritis. The process is the same as many other joints. A complete history and examination is needed to start the process followed by labs and diagnostics (usually x-rays are a starting point). From this point, a care plan is designed based on your findings.