Frozen shoulder is a very common term, but actually a rather uncommon diagnosis. It is used to describe any kind of shoulder stiffness whether associated with pain or injury. A true frozen shoulder has no predisposing cause and it just comes on. The body starts to produce scar tissue in the lining of the joint particularly at the front and it is initially painful followed by stiffness and over a period of about two years it tends to loosen off. This does not occur commonly in fit young sportsmen, but in older, typically ladies.