humeroulnar joint (elbow)
DESCRIPTION
Humeroulnar Joint (Elbow). Presented by Joy and Misty. Anterior Surface Anatomy. Cubital Fossa. Medial Bicipital line. Posterior Surface Anatomy. Lateral Epicondyle. Hinge joint- simple joint where the articulating surfaces allow for motion in only one direction. - PowerPoint PPT PresentationTRANSCRIPT
Humeroulnar Joint(Elbow)
Presented by Joy and Misty
Anterior Surface Anatomy
Cubital Fossa
Medial Bicipital line
Posterior Surface AnatomyLateral Epicondyle
• Hinge joint- simple joint where the articulating surfaces allow for motion in only one direction
•Pivot Joint- allows one bone to rotate around another bone
Synovial joint- capsule that contains synovial fluid which nourishes articular cartilage and lubricating the articulating surfaces. Synovial joints are usually reinforced by accessory
ligaments
Ligaments
• A ligament is a strip or sheet of tough collagenous connective tissue that attaches a muscle to a bone.
Bursa- A fibrous sac filled with synovial fluid located between adjacent muscles or where a tendon passes over a bone
Ulnar Tuberosity
Trochlear Notch
Muscles of Extension•Triceps brachii
O
O
Lateral head Inferior to greaterTubercle on posterior humerus
Medial headPosterior surface of humerus
IAll heads-Olecranon processof Ulna
O
Long headInfraglenoid tubercle
of the scapula
Radial nerveDeep Brachial artery
O- Long Head
O- short head
I- both Radial
tuberosity
Muscles of Flexion
Biceps
BrachialisO
I
Brachioradialis
lateral supracondylar
ridge of humerus
I- styliod process radius
OSupraglenoid tubercle
Coracoid process scapula
Distal half of humerus
anterior surface
Coronoid process and
ulnar tuberosity
Radial nerveRadial artery
Musculocutaneous nerve
Brachial artery
Muscles of Pronation
Pronator teres
Pronator quadratus
O
O
Medial epicondyle of HumerusAnd corinoid process of Ulna
ILateral aspect of radius at its midpoint
Median nerveUlnar artery
O I Distal fourthOf radius
Distal fourth of Ulna
Median nerve Anterior interosseousartery
(also assists in elbow flexion)
Muscles of SupinationSupinator
O
O
Lateral Epicondyle ofHumerus andadjacent Ulna
I Anterior surface of the proximal radius ( wraps around )
Radial nerveInterosseous artery Biceps
I Radial tuberosity of radius
Arteries
Veins
Nerves
Clinical Concerns