What does the trochlea articulates with?

The capitulum laterally articulates with the radius; the trochlea, a spool-shaped surface, articulates with the ulna.

What attaches to the trochlear notch?

The trochlear notch is the deep semicircular surface for articulation with the trochlea of the humerus. The olecranon is the squared process extending proximal to the trochlear notch. It is the site of insertion of the tendon of the triceps brachii muscle.

Is the trochlea articulating or non articulating?

Conclusion: We have successfully identified a region of the LTR of the elbow that, despite being covered with articular cartilage, is non-articulating and can be used for anterior to posterior instrumentation without the need for countersinking.

What does the humeral trochlea articulate with?

In the human arm, the humeral trochlea is the medial portion of the articular surface of the elbow joint which articulates with the trochlear notch on the ulna in the forearm.

Why is the trochlear notch important?

The articulation of the humeral trochlea and the trochlear notch of the ulna is the major facilitator of flexion and extension about the elbow. The radiocapitellar articulation supports motion in both the flexion and extension of the elbow in addition to supination and pronation of the forearm.

What is the trochlear?

The trochlear nerve is one of 12 sets of cranial nerves. It enables movement in the eye’s superior oblique muscle. This makes it possible to look down. The nerve also enables you to move your eyes toward your nose or away from it.

What does the radius articulate with?

ulna
The radius articulates proximally at the elbow with the capitulum of the humerus and the radial notch of the ulna. It articulates at its distal end with the ulna at the ulnar notch and with the articular surfaces of the scaphoid and lunate carpal bones.

What does the ulna articulate with?

The ulna is the longest, thinnest bone of the forearm. It articulates proximally with the trochlea of the humerus and with the head of the radius. Distally it articulates with the ulnar notch of the radius and with an articular disk that separates it from the carpal bones.

Where do we find trochlear notch?

The trochlear notch (/ˈtrɒklɪər/), 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. It is formed by the olecranon and the coronoid process.

What is trochlear?

What is the function of trochlear in humerus?

The trochlea forms the articular surface of the medial column of the elbow and is responsible for allowing ulnohumeral flexion and extension. Fractures of the humeral trochlea can result in elbow stiffness, instability, and post-traumatic arthritis.

What part of the ulna articulates with the trochlea?

The proximal end of the ulna resembles a crescent wrench with its large, C-shaped trochlear notch. This region articulates with the trochlea of the humerus as part of the elbow joint. The inferior margin of the trochlear notch is formed by a prominent lip of bone called the coronoid process of the ulna.

Where is the trochlear notch located?

Olecranon – a large projection of bone that extends proximally,forming part of trochlear notch.

What is the trochlear notch that articulates with the humerus?

…large C-shaped notch—the semilunar, or trochlear, notch—which articulates with the trochlea of the humerus (upper arm bone) to form the elbow joint. The projection that forms the upper border of this notch is called the olecranon process; it articulates behind the humerus in the olecranon fossa and may be felt…

Is the trochlear notch part of the elbow joint?

The trochlear notch (/ ˈ t r ɒ k l ɪər /), 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.It is formed by the olecranon and the coronoid process.. About the middle of either side of this notch is an indentation