Frozen Shoulder: Present and Future provides insights into one of the most mysterious diseases of the human body, frozen shoulder, a condition characterized by severe shoulder pain and functional restriction of shoulder motion. About 4% of the general population develops a frozen shoulder, with numbers rising to 59% in patients with diabetes mellitus. It curiously only develops between the age of 40 and 60 years, affects more women than men, and seems to be more common in patients with sedentary jobs. Disease duration varies between 1 and 3 years and consequently has a large impact on health and economic well-being.