OPS-Code 5-789.17:

The growth of the ulna was temporarily slowed down by an operation.

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 same side as your thumb. Both bones in the forearm have an upper, middle and lower section. The top ends of ulna and radius, along with the humerus, form the elbow joint.

The operation was performed on the growth plate at the upper end of the ulna. 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. In children and adolescents, bone growth originates from the growth plates of the respective bones.

During the surgery, a specialized device is typically inserted near the growth plate. These specialized devices can be screws or plates, for example. This makes it possible to slow down the further growth of the ulna for a certain period of time. The device used can be removed later on. The ulna can then continue to grow.