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.

2023年10月30日 · 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.

2020年11月7日 · The radioulnar joints are two locations in which the radius and ulna articulate in the forearm. The proximal radioulnar joint is located near the elbow, and is an articulation between the head of the radius,and the radial notch of the ulna.

2024年10月1日 · Important landmarks of the proximal ulna are the olecranon, coronoid process, trochlear notch, radial notch and the tuberosity of ulna: Olecranon – a large projection of bone that extends proximally, forming part of trochlear notch.

2021年9月19日 · The ulna (plural: ulnae) is one of the two long bones of the forearm, located medially in the supinated anatomic position. It has a larger proximal end and tapers to a smaller distal end (opposite to the radius). Prominent features of the ulna include: Anteriorly. Posteriorly.

2018年8月25日 · To identify the left/right ulna on a model, check which side the radial notch is located on while keeping the trochlear notch facing towards you. The radial notch is located on the same side as the hand, that is on the right side for the …

2024年4月22日 · The radial notch is a shallow depression on the medial side of the ulna that articulates with the head of the radius. This joint allows for rotation movements of the forearm.

2023年7月22日 · Adjacent to the coronoid process, a shallow notch called the radial notch accommodates the joint with the head of the radius. This joint enables the radial head to rotate against the ulna’s proximal end during pronation and supination.

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 ulna forms part of the wrist joint and elbow joints. Specifically, the ulna joins (articulates) with: trochlea of the humerus, at the right side elbow as a hinge joint with semilunar trochlear notch of the ulna. the radius, near the elbow as a pivot joint, this allows the radius to …