[1] Its apex is pointed, slightly curved upward, and in flexion of the forearm is received into the coronoid fossa of the humerus.

Its upper surface is smooth, convex, and forms the lower part of the semilunar notch.

Its medial surface, by its prominent, free margin, serves for the attachment of part of the ulnar collateral ligament.

Frequently, the flexor pollicis longus muscle arises from the lower part of the coronoid process by a rounded bundle of muscular fibers.

[2][4] This article incorporates text in the public domain from page 214 of the 20th edition of Gray's Anatomy (1918)