OPS-Code 8-158.9:

You had a needle inserted into the joint between your ulna and carpal bones.

At the wrist, the forearm bones, the ulna and radius, articulate with several bones of the hand. The ulna and radius are each connected to the hand via their own joint. There is also another joint between the ends of the ulna and the radius.The hand is made up of a lot of small bones and joints. The hand can be divided into 3 sections. The wrist (carpus) is directly connected to the forearm. Then comes the metacarpus and then the individual fingers.

The carpus consists of 8 carpal bones. There are 2 rows of them. The lower row is closer to the wrist. The upper row (of bones) is towards the fingers. The carpal bones are connected to each other via joints.Joints are encased in a joint capsule.The joint capsule contains synovial fluid. This enables the bones to slide easily past one another.

The needle can be used, for example, to drain excess synovial fluid, pus or blood from the joint.