Hello, elbow itself is a very big part, so I m not sure where in elbow joint you have fracture
. It must be an extra articular fracture so you are being treated in plaster. Generally after plaster removal there is more of a stiffness
and little pain during initiation of movement. You being a young boy can regain full range of movement in very short time if you do exercises religiously, maximum time limit of 3 months (maximum). So no need to worry. Thank you.