What anatomical feature is created at the lower border of the trochlear notch?

The anatomical feature created at the lower border of the trochlear notch is the coronoid process. The trochlear notch is a prominent feature on the ulna, which is one of the two long bones in the forearm. This notch articulates with the humerus to form the elbow joint, allowing for flexion and extension of the arm.

The coronoid process is a bony projection that serves as an insertion point for ligaments and muscles and plays a crucial role in stabilizing the elbow joint. It fits snugly into the notch of the humerus during flexion, contributing to the overall function and strength of the elbow.

Understanding the role and location of the coronoid process is important for studying upper limb anatomy and assessing conditions that might affect the elbow joint.