Adhesive capsulitis of the shoulder is a relatively common entity which is poorly understood and produces a significant amount of morbidity in afflicted patients. The natural history of adhesive capsulitis is only just beginning to be understood. It is a self-limiting disease, but may take 18 to 36 months to resolve. During that time, individuals can suffer a significant amount of pain and miss a large amount of work. Many surgeons have treated this process with early manipulation with the outcome never being reported in a prospective manner. Some authors have advocated conservative non-operative treatment, knowing the natural history in most of these shoulders will be near resolution. The primary purpose of this study is to examine in a prospective randomized manner the results of continuous non-operative management versus arthroscopic capsulectomy. This study will determine if operative intervention with an arthroscopic capsulectomy can shorten the natural history of adhesive capsulitis, and give comparable results with non-operative management at final follow-up of 2 years.