Trochlea is a spool-shaped process on distal end of the humerus that is found medial to the capitulum and articulates with the ulna.
Trochlea is a structure that acts like a pulley. Its shape is somewhat like that of an hour-glass. It is a cartilage. It is located at the superior nasal aspect of the frontal bone. The structure is responsible for allowing the ulno-humeral flexion and extension.
Humerus is the largest bone of the upper body of the humans. It is found on the upper forearm that runs from the shoulder to the elbow. At the shoulder region, it is connected to the glenoid fossa of the scapula.
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