Posterior ligament of elbow
Encyclopedia
The posterior ligament is thin and membranous, and consists of transverse and oblique fibers.
Above, it is attached to the humerus
immediately behind the capitulum
and close to the medial margin of the trochlea
, to the margins of the olecranon fossa
, and to the back of the lateral epicondyle
some little distance from the trochlea.
Below, it is fixed to the upper and lateral margins of the olecranon, to the posterior part of the annular ligament
, and to the ulna behind the radial notch
.
The transverse fibers form a strong band which bridges across the olecranon fossa; under cover of this band a pouch of synovial membrane and a pad of fat project into the upper part of the fossa when the joint is extended.
In the fat are a few scattered fibrous bundles, which pass from the deep surface of the transverse band to the upper part of the fossa.
This ligament is in relation, behind, with the tendon of the Triceps brachii and the Anconæus.
Above, it is attached to the humerus
Humerus
The humerus is a long bone in the arm or forelimb that runs from the shoulder to the elbow....
immediately behind the capitulum
Capitulum
The term Capitulum can refer to several things:*In botany, a type of flower head where the bracts are located under the basis, such as a daisy's*Also in botany, the top of a Sphagnum moss plant with compact clusters of young branches....
and close to the medial margin of the trochlea
Trochlea
Trochlea is a term in anatomy. It refers to a grooved structure reminiscent of a pulley's wheel.Most commonly, trochleae bear the articular surface of saddle and other joints:* Trochlea of humerus* Trochlear process of the Calcaneus...
, to the margins of the olecranon fossa
Olecranon fossa
The olecranon fossa is a deep triangular depression on the posterior side of the humerus, superior to the trochlea, in which the summit of the olecranon is received during extension of the forearm.-External links: *...
, and to the back of the lateral epicondyle
Lateral epicondyle
Lateral epicondyle can refer to:* Lateral epicondyle of the humerus * Lateral epicondyle of the femur...
some little distance from the trochlea.
Below, it is fixed to the upper and lateral margins of the olecranon, to the posterior part of the annular ligament
Annular ligament
The anular ligament is a strong band of fibers, which encircles the head of the radius , and retains it in contact with the radial notch of the ulna....
, and to the ulna behind the radial notch
Radial notch
The radial notch of the ulna 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....
.
The transverse fibers form a strong band which bridges across the olecranon fossa; under cover of this band a pouch of synovial membrane and a pad of fat project into the upper part of the fossa when the joint is extended.
In the fat are a few scattered fibrous bundles, which pass from the deep surface of the transverse band to the upper part of the fossa.
This ligament is in relation, behind, with the tendon of the Triceps brachii and the Anconæus.