One of the mysteries of the English language finally explained.
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 anterior projection helps receive the trochlea of the humerus and lies in the coronoid fossa of the humerus when the elbow is flexed.’
- ‘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.’
- ‘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’.
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