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The trochlear notch (/ ˈ t r ɒ k l ɪər /), [1] 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 (the bone directly above the ulna in the arm) as part of the elbow joint.
1 Οκτ 2024 · 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.
19 Σεπ 2021 · Prominent features of the ulna include: proximal: olecranon, trochlear notch, coronoid process, radial notch (lateral), sublime tubercle (medial) shaft: ulnar tuberosity. distal: head, styloid process, fovea, groove for extensor carpi ulnaris.
The trochlear notch (semilunar notch, greater sigmoid cavity) is a large depression, formed by the olecranon and the coronoid process, and serving for articulation with the trochlea of the humerus.
The trochlear (semilunar) notch is the large concave area found on the anterosuperior aspect of the proximal part of ulna. It consists of two articular portions: —the proximal articular portion is found on the anterior aspect of the olecranon; —the distal articular portion is found on the superior aspect of the coronoid process.
11 Σεπ 2023 · There are three bones that comprise the elbow joint: the humerus; the radius; the ulna. These bones give rise to two joints: Humeroulnar joint is the joint between the trochlea on the medial aspect of the distal end of the humerus and the trochlear notch on the proximal ulna.
2 Νοε 2023 · Trochlear notch of the ulna and the trochlea of the humerus; Head of the radius and the capitulum of the humerus; Note: The proximal radioulnar joint is found within same joint capsule of the elbow, but most resources consider it as a separate articulation.
