Answer: hinge like motion of the forearm
Explanation:
The trochlea is the rough hourglass shaped structure that can be found on the distal end of the humerus. The trochlea articulates with the trochlear notch of the ulna. This structure performs the function of the hinge joint in the forearm and allows the functions like movements of the circumduction, flexion and extension muscles. These movements does not take place in the antero-posterior side of the humerus.
