5-790.p9:

Your ulna has been surgically straightened and aids were used to stabilize it.

There are 2 bones in the forearm, the ulna and the radius. The ulna is on the side where your little finger is. The radius is on the side where your thumb is. Both bones in the forearm have an upper, middle and lower section. The lower ends of the ulna and the radius are connected to the hand by the wrist.

When the ulna is broken it can be stabilized. It could also be that a growth plate has become detached from the ulna. In children and adolescents the bone’s growth stems from the growth plates. There are growth plates in the long bones in the arms and legs, and the long bones in the hands and feet. There is a growth plate at each end of these bones.

The lower end of your ulna was affected.

You have had surgery to put the bits of bone at the lower end of your ulna back into their normal position, and a special restraint system was used to hold them together and stabilize them. For the special holding system, metal pins or screws are inserted through the skin from outside. These are then joined to one another outside the body using a holding system. The holding system is designed to be mobile. This enables the arm to be moved.