In the human arm, the humeral trochlea is the medial portion of the articular surface of the elbow joint which articulates with the trochlear notch on the ulna in the forearm. In humans and other apes, it is trochleariform (or trochleiform), as opposed to cylindrical in most monkeys and conical in some prosimians. [1] .

2023年10月30日 · The trochlea has a surface shaped like a pulley and covers the anterior, posterior and inferior surfaces of the medial condyle of the humerus. It articulates with the ulna at the trochlear notch . When the elbow is in the extended position, the posterior and inferior aspects of the trochlea are in contact with the ulna.

The more medial of these areas is the trochlea, a spindle- or pulley-shaped region (trochlea = “pulley”), which articulates with the ulna bone. Immediately lateral to the trochlea is the capitulum (“small head”), a knob-like structure located on the anterior surface of the distal humerus.

2023年7月24日 · The trochlea is a spine-like structure present at the medial angle of the orbit; the trochlea is a part of the orbital surface of the frontal bone. The orbital part of the frontal bone forms roof of the orbit and ethmoidal sinus.

A fibrous loop in the orbit, near the nasal process of the frontal bone, through which passes the tendon of the superior oblique muscle of the eye.

Trochlea (Latin for pulley) is a term in anatomy. It refers to a grooved structure reminiscent of a pulley's wheel. Most commonly, trochleae bear the articular surface of saddle and other joints: It also can refer to structures which serve as a guide for muscles:

OCLs of the trochlea are focal abnormalities of the subchondral bone and overlying articular cartilage in young athletes that may progress to osteochondral separation, loose body formation, and premature degenerative joint disease.