Proximal Ulna Anatomy at Anatomy

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Proximal Ulna Anatomy. The ulna is usually slightly longer than the radius, but the radius is thicker. It forms the elbow joint with the humerus and also articulates with the radius both proximally and distally.

Left Proximal Ulna
Left Proximal Ulna from

The apl arises from the posterior (dorsal) surface of the proximal portion of the radius, ulna, and interosseous membrane and inserts on the ventral surface of the base of the first metacarpal. The ulna is a long bone in the forearm. Prominent features of the ulna include:

Left Proximal Ulna

Redefining the proximal ulna anatomy. The ulna ossifies from three different centers, with the primary center for the shaft appearing around the eighth week of fetal life. Successful reconstruction depends on restoration of the anatomic contributors to stability. Processes (2) and notches (2):