Although shoulder pain is a very common problem and compromised shoulder movement due to pain, stiffness, or weakness can cause substantial disability, many patients fail to recognize a need for a proper treatment. The diagnosis and treatment of the shoulder should be specified for each of the disease entity. Most of shoulder pain can be managed non-operatively with a well-organized rehabilitation program. However, the surgery should always remain as an option in case of failure of conservative managements, which can be seen from a definite indication of a patient's condition. The article presents four representative disease entities other than shoulder trauma occurring in old age which doctors see most often at outpatient's clinics. Impingement syndrome, rotator cuff tear, calcifying tendonitis, and arthritis are described in this article, introducing each diseases and surgical indications and descriptions, and their results.