#trochlear_notch

Trochlear notch

Large depression in the upper extremity of the ulna forming part of the elbow joint

The trochlear notch, also known as semilunar notch and greater sigmoid cavity, is a large depression in the upper extremity of the ulna that fits the trochlea of the humerus as part of the elbow joint. It is formed by the olecranon and the coronoid process.

Wed 14th

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