Final answer:
The articulation between the trochlea of the humerus and the trochlear notch of the ulna at the elbow joint is a Ginglymus Joint
Step-by-step explanation:
The elbow joint contains two articulations, where the joint between the trochlea of the Upper Arm Bone and the trochlear notch of the ulna is specifically a ginglymus Joint. This particular joint is known as the humeroulnar joint. The geometry of the trochlea, which is a pulley-shaped region located medially at the distal end of the humerus, and the large C-shaped trochlear notch of the ulna allows for the basic movement. This movement permits flexion and extension but restricts other forms of motion.
In addition to the humeroulnar articulation, the elbow also involves the humeroradial joint and the proximal radioulnar joint. However, when referencing the joint between the trochlea and the trochlear notch directly, we are describing the ginglymus joint of the elbow joint.