When it comes to chewing gum, it's the type of gum you chew that makes a difference in whether it's helpful or harmful to your teeth. While chewing gum containing sugar may actually increase your chances of developing a cavity, there is clinical evidence that demonstrates just the opposite for sugar-free gum.
The olecranon process is the prominent bony projection of the ulna bone that can be felt at the elbow. Hook-like in shape, it is the structure that curves around the bottom of the humerus bone in the upper arm and encapsulates the elbow joint. It also is the site of attachment for several muscles of the arm.
Important landmarks of the proximal ulna are the olecranon, coronoid process, trochlear notch, radial notch and the tuberosity of ulna: 1  Olecranon â A large projection of bone that extends proximally, forming part of trochlear notch. 2  Coronoid process â This ridge of bone projects outwards anteriorly, forming part of the trochlear notch.