Meaning of trochlea in English:


Pronunciation /ˈtrɒklɪə/

nounplural noun trochleae/ˈtrɒklɪiː/

  • A structure resembling or acting like a pulley, such as the groove at the lower end of the humerus forming part of the elbow joint.

    ‘This notch articulates with the trochlea of the humerus to form the elbow joint.’
    • ‘On the lateral aspect of the calcaneus, 20 mm posterior to the peroneal trochlea, the periosteum covering an 8 x 8 mm area was peeled, and two anchors were inserted into the calcaneus at least 8 mm apart.’
    • ‘This anterior projection helps receive the trochlea of the humerus and lies in the coronoid fossa of the humerus when the elbow is flexed.’
    • ‘If this maneuver causes reproduction of a disabling symptom, the patient may have a medial patellar subluxation, in which the patella is tracking from medial in extension laterally into the trochlea on knee flexion.’
    • ‘Displacement of the ulna from the trochlea, with humeroradial joint dislocation, is usually achieved only in a patient who has received general anesthesia.’


Late 17th century Latin, ‘pulley’; compare with Greek trokhilia ‘sheave of a pulley’.