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Title: The elbow joint
Description: These notes are a breakdown of the elbow joint including, a description of the articular surfaces, the ligaments within the joint with their origin, insertion and movement they restrict. These notes also include a description of the joint capsule and the synovial membrane and the movements available at the joint.
Description: These notes are a breakdown of the elbow joint including, a description of the articular surfaces, the ligaments within the joint with their origin, insertion and movement they restrict. These notes also include a description of the joint capsule and the synovial membrane and the movements available at the joint.
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The elbow joint - SYNOVIAL HINGE JOINT
Articular Surface
Description
Trochlea(groove) surface of the humerus
• Runs obliquely distal and laterally and therefore
accounts for the carrying angle at the elbow joint
• Concave surface in the frontal plane and a convex
surface in the sagittal plane
• It forms almost a complete circle
• Groove of the trochlea is limited medially by a sharp,
prominent ridge and laterally by a lower and blunt ridge
• Above the trochlea, anteriorly, is the concave coronoid
fossa, which receives the coronoid process of the ulnar
during flexion
Capitulum
• hemisphere on the anterior and inferior aspects of the
humerus
• medial border is truncated forming the capitulotrochlear
groove
• Above the capitulum anteriorly is the radial notch, which
receives the rim of the head of the radius during flexion
Trochlear notch of the ulna
• proximal, deep, trochlear notch of the ulna articulates
with the trochlear surface of the humerus
• Rounded, curved longitudinal ridge extending from the
tip of the olecranon process superiorly to the tip of the
coronoid process inferiorly
Head of radius
• superior surface of the head of the radius is concave for
articulation with the capitulum
• cartilage of this surface is continuous with that around
the sides of the head
Joint capsule
Description
Anteriorly
arises from the medial epicondyle arches upwards
and laterally attaching to the margins of the coronoid
and radial fossa, and to the articular margin of the
capitulum as it reaches the lateral epicondyle
Posteriorly
the capsule follows the lateral margins of the
capitulum and arches upwards around the olecranon
fossa, returning to the medial epicondyle
Inferiorly
attaches to the margins of the trochlear notch around
the olecranon and coronoid processes
...
It lines the joint capsule
and is reflected onto the humerus
to cover the coronoid, radial and
olecranon fossa
Movements
Flexion
Extension
Title: The elbow joint
Description: These notes are a breakdown of the elbow joint including, a description of the articular surfaces, the ligaments within the joint with their origin, insertion and movement they restrict. These notes also include a description of the joint capsule and the synovial membrane and the movements available at the joint.
Description: These notes are a breakdown of the elbow joint including, a description of the articular surfaces, the ligaments within the joint with their origin, insertion and movement they restrict. These notes also include a description of the joint capsule and the synovial membrane and the movements available at the joint.