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Humeroulnar Joint (Elbow)

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.

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Humeroulnar Joint (Elbow)

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  1. Humeroulnar Joint(Elbow) Presented by Joy and Misty

  2. Anterior Surface Anatomy Cubital Fossa Medial Bicipital line

  3. Posterior Surface Anatomy Lateral Epicondyle

  4. 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

  5. Synovial joint- capsule that contains synovial fluid which nourishes articular cartilage and lubricating the articulating surfaces. Synovial joints are usually reinforced by accessory ligaments

  6. Ligaments • A ligament is a strip or sheet of tough collagenous connective tissue that attaches a muscle to a bone.

  7. Bursa- A fibrous sac filled with synovial fluid located between adjacent muscles or where a tendon passes over a bone

  8. Trochlear Notch Ulnar Tuberosity

  9. Muscles of Extension Long head Infraglenoid tubercle of the scapula O Lateral head Inferior to greater Tubercle on posterior humerus O Triceps brachii O Medial head Posterior surface of humerus Radial nerve Deep Brachial artery All heads- Olecranon process of Ulna I

  10. Muscles of Flexion O Supraglenoid tubercle O- Long Head lateral supracondylar ridge of humerus O- short head Coracoid process scapula Brachioradialis Radial nerve Radial artery Biceps Distal half of humerus anterior surface O Brachialis Musculocutaneous nerve Brachial artery I- styliod process radius I- both Radial tuberosity Coronoid process and ulnar tuberosity I

  11. Muscles of Pronation Pronator quadratus Distal fourth of Ulna O I Distal fourth Of radius Median nerve Ulnar artery O Medial epicondyle of Humerus And corinoid process of Ulna O Median nerve Anterior interosseous artery Pronator teres (also assists in elbow flexion) I Lateral aspect of radius at its midpoint

  12. Muscles of Supination Supinator Lateral Epicondyle of Humerus and adjacent Ulna O O Radial nerve Interosseous artery Biceps I Anterior surface of the proximal radius ( wraps around ) I Radial tuberosity of radius

  13. Arteries

  14. Veins

  15. Nerves

  16. Clinical Concerns

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