what is ulnar styloid
Ulnar Styloid The ulnar styloid is the small process (bump) that protrudes at the wrist opposite the thumb and serves as an attachment site for the ulnar collateral ligament which joins the ulna and two of the carpal bones and facilitates wrist stability.lnar Styloid The ulnar styloid is the small process (bump) that protrudes at the wrist opposite the thumb and serves as an attachment site for the ulnar collateral ligament which joins the ulna and two of the carpal bones and facilitates wrist stability.