Elbow

ELBOW

The elbow joint is a gingival or hinged joint. It has three joints: humerus-ulnar, between the humeral trochlea and the trochlear ulcer notch, humerus-radial, between the humerus chapter and the radial head and proximal radius-ulnar, between the radial head and the radial notch of the ulna.

The joint surfaces are joined by a capsule that is thickened medially and laterally by the ulnar and radial collateral ligaments.

Articular Capsule & #8211; It surrounds the entire joint and consists of two parts: anterior and posterior. The anterior part is a thin fibrous layer that covers the anterior face of the joint. The posterior part is thin and membranous and consists of oblique and transverse fibers.

Ulnar Collateral Ligament & #8211; It is a thick triangular beam consisting of two portions: anterior and posterior, joined by a thinner intermediate portion.

Radial Collateral Ligament & #8211; It is a triangular fibrous bundle, less evident than the ulnar collateral ligament.

The proximal radioulnar joint is a trocoid or pivotal junction between the circumference of the radius head and the ring formed by the radial notch of the ulna and the annular ligament.

Annular Ligament & #8211; It is a strong bundle of fibers that surrounds the radial head, keeping it in contact with the radial notch of the ulna.

From the lower edge of the annular ligament comes a thick bundle of fibers that extends to the radius neck, called the square ligament.

PREVIOUS VIEW OF ELBOW ARTICULAR STRUCTURES

Source: NETTER, Frank H .. Atlas of Human Anatomy. 2 ed. Porto Alegre: Artmed, 2000.

SIDE AND MEDIAL VIEW OF ELBOW ARTICULAR STRUCTURES

Source: NETTER, Frank H .. Atlas of Human Anatomy. 2 ed. Porto Alegre: Artmed, 2000.

PREVIOUS AND POSTER VIEW OF ELBOW ARTICULAR STRUCTURES

Source: NETTER, Frank H .. Atlas of Human Anatomy. 2 ed. Porto Alegre: Artmed, 2000.

 

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