capitulum of humerus

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

What are the capitulum and trochlea?

The trochlea and capitulum are the rounded, smooth, knuckle-like surfaces at the anterior and distal end of the humerus. The elbow flexes and extends around these structures. Two outcroppings of bone flank the trochlea and capitulum.

Is the capitulum a condyle?

A large central condyle which has two articular components – the capitulum which articulates with the head of the radius, and the trochlea which articulates with the ulna.

Where is capitellum?

Capitellum forms the part of the distal humerus which articulates with the radial head. Fracture of the capitellum is an intra-articular fracture of the elbow, analogous to the Hoffa fracture of the knee.

What is the function of the capitulum?

The capitellum plays a significant role in the pivot function of the elbow, creating the “ball” of the pivoting ball-and-socket part of the elbow joint.

Why is it called capitulum?

History and etymology

Capitellum is derived from the Latin word for head, caput, and the suffix ellum, which is diminutive; thus the word could be interpreted to imply a little head.

Which bones have a capitulum?

In human anatomy of the arm, the capitulum of the humerus is a smooth, rounded eminence on the lateral portion of the distal articular surface of the humerus. It articulates with the cupshaped depression on the head of the radius, and is limited to the front and lower part of the bone.

What attaches to capitellum?

Anatomy. The radial head articulates with the capitellum of the distal humerus and the ulna (proximal radial ulnar joint). The radial head is a secondary stabilizer of the elbow joint along with the radial and lateral ulnar collateral ligaments and the annular ligament.

Are the capitulum and trochlea condyles?

A large central condyle which has two articular components – the capitulum is the lateral articular component and articulates with the radius, and the trochlea is the medial component which articulates with the ulna. Learn more about the anatomy of the elbow joint in this tutorial.

Is the capitulum anterior or posterior?

Immediately lateral to the trochlea is the capitulum (“small head”), a knob-like structure located on the anterior surface of the distal humerus. The capitulum articulates with the radius bone of the forearm. Just above these bony areas are two small depressions.

Is lateral condyle the same as capitulum?

In dog and cats, the condyle is divided in two parts: The trochlea, the medial part, that articulates with ulna. The capitulum, the lateral part; that articulates with radius.

What is capitulum known as?

Definition of capitulum

1 : a rounded protuberance of an anatomical part (such as a bone) 2 : a racemose inflorescence (as of the sunflower) with the axis shortened and dilated to form a rounded or flattened cluster of sessile flowers — see inflorescence illustration.

Is trochlea lateral to capitulum?

The trochlea has the capitulum located on its lateral side and the medial epicondyle on its medial.

What is Panner disease?

Panner’s disease causes elbow pain around the outside part of the elbow. The pain usually gets worse with activity, such as throwing a ball, and becomes better with rest. The elbow also may be stiff, swollen, and hurt to touch.

What is Tuberculum and capitulum?

At the spinal column, the rib starts with the rib head (caput costae or capitulum). The rib bone progresses backwards via the rib neck (collum costae) to the rib tubercle (tuberculum costae). This is where the rib body (corpus costae) begins, which curves round to the front with the rib angle (angulus costae).

Which forearm bone articulates with the capitulum?

The capitulum articulates with the radius bone of the forearm. Just above these bony areas are two small depressions. These spaces accommodate the forearm bones when the elbow is fully bent (flexed).

What are the capitulum and trochlea?

Why is it called capitulum?

Is the capitulum anterior or posterior?

What is Tuberculum and capitulum?

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