I fell over my left arm five days ago. Went to the ER and, after seeing the radiography of my elbow, the orthopedist decided that I should have my lower and upper arm in a gypsum cast (I think it is called plaster cast in english) for 18 days. The diagnostic was "fissure of the radial head". I need to mention that he saw the radiography, came back to me, pressed on my arm, asked me if I feel pain when he does that and then decided what the diagnostic was. Given the fact that I fad no pains in the next days, I started to look up for my condition to see if it is possible to have the cast removed earlier than 18 days. What I found out is that my arm should not be mechanical immobilized at all and I even should start to perform not very demanding exercises after just 10 days. Another thing I found out about and is unsettling me is a condition called definitive articular ankylosis. I really do not know what to do.