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The radial notch of the ulna (lesser sigmoid cavity) is a narrow, oblong, articular depression on the lateral side of the coronoid process; it receives the circumferential articular surface of the head of the radius.. It is concave from before backward, and its prominent extremities serve for the attachment of the annular ligament.
The radial notch is the smooth, oval, articular indentation found along the lateral aspect of the coronoid process of ulna. Its anterior and posterior margins provide attachment sites for the annular ligament of the radius.
The radial notch is a narrow, oblong, articular depression on the lateral side of the coronoid process; it receives the circumferential articular surface of the head of the radius. It is concave from before backward, and its prominent extremities serve for the attachment of the annular ligament.
The radial notch of the ulna is a small, shallow depression located on the lateral side of the coronoid process of the ulna, where it articulates with the head of the radius to form part of the proximal radioulnar joint.
30 Οκτ 2023 · On the lateral aspect of the proximal ulna and just distal to the trochlear notch lies the shallow, rounded depression called the radial notch. The radial notch articulates with the circumference of the radial head and forms the proximal radioulnar joint.
13 Μαΐ 2022 · To the lateral side and slightly inferior to the trochlear notch is a small, smooth area called the radial notch of the ulna. This area is the site of articulation between the proximal radius and the ulna, forming the proximal radioulnar joint .
A radial notch is a depression or groove on the ulna bone that allows for rotation at the elbow joint with the head of the radius. It is encircled by a ligament that attaches to the margins of the ulna's radial notch.
