| The location of the most isometric clusters on the ulna were more variable. |
| Trace the ulna down the side of your forearm to where it ends, a boney prominence above the wrist. |
| Extensor digiti medii arises from the ulna beneath the extensor indicis, with which it may be fused. |
| When the ulna is shorter than the radius, the lunate bone absorbs more force when the wrist is used for heavy gripping activities. |
| The muscle may be divided, with the second belly attached distally to the radius, or even the ulna. |
| Superior to the trochlea is another anterior depression called the coronoid fossa which receives part of the ulna when flexed. |
