A broken arm, also known as an arm fracture, occurs when one or ... Your arm is made up of three main bones. The humerus is the long bone in the upper arm that extends from your shoulder to ...

Posteriorly displaced fractures may be angulated or displaced medially or laterally. Uncommonly, direct force applied to the flexed elbow may displace the distal humerus fracture anteriorly.

The same crack-like space appears in the upper arm bone (humerus), seen just above the ... severe blunt-force trauma caused the fracture to the left side of her skull. In her reconstructed skull ...