1 / 69

Arm, Elbow, Forearm

Arm, Elbow, Forearm. Two Compartments of Arm. Arm = Shoulder to elbow; aka Brachium Anterior = flexors Innervated by Musculocutaneous Nerve Blood supply by brachial aa Posterior =extensors Innervated by Radial Nerve Blood supply by brachial profunda aa. Muscles of the Anterior Compartment.

beth
Download Presentation

Arm, Elbow, Forearm

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Arm, Elbow, Forearm

  2. Two Compartments of Arm • Arm = Shoulder to elbow; aka Brachium • Anterior = flexors • Innervated by Musculocutaneous Nerve • Blood supply by brachial aa • Posterior =extensors • Innervated by Radial Nerve • Blood supply by brachial profunda aa

  3. Muscles of the Anterior Compartment • Coracobrachialis • Biceps brachii • Brachialis

  4. Anterior Muscles

  5. Anterior muscles

  6. Nerves

  7. Muscles of the Posterior Compartment • Triceps brachii • Long head • Lateral head • Medial head • Anconeus

  8. Posterior Muscles

  9. Anconeus

  10. Posterior Nerve

  11. Regional Blood Supply • Brachial • Brachial Profunda • Superior Ulnar Collateral • Inferior Ulnar Collateral • Radial Collateral • Middle Collateral

  12. Blood Supply

  13. Blood Supply

  14. Veins

  15. Elbow Complex • Humero-Ulnar Joint – flexion/extension • Olecranon Process and Olecranon Fossa (post.) • Trochlea and Trochlear Notch (ant.) • Joint Capsule ant. and post. • Ulnar (Medial) collateral • Radial (Lateral) collateral • Anular • Lateral Ulnar collateral – See Interactive Hand • Carrying angle

  16. Elbow Complex

  17. Elbow Complex

  18. Elbow Complex

  19. Elbow Complex

  20. Elbow Complex

  21. Elbow Complex

  22. Elbow complex

  23. Elbow Complex

  24. Elbow Complex • Humero-radial • Head of radius with capitulum of humerus • Accessory motion • Not a direct articulation

  25. Radio-Ulnar Joints – Supination and Pronation • Superior • Head of Radius in radial notch • Anular ligament • Inferior • Head of Ulna in ulnar notch • Anterior and Posterior radio-ulnar ligaments • Interosseous Membrane

  26. R-U Joints

  27. R-U Joints

  28. Supination and Pronation

  29. Cubital Fossa

  30. Cubital Fossa

  31. Cubital Fossa

  32. Cubital Fossa

  33. Forearm AKA Antebrachium – Two Compartments • Anterior = ventral • Flexors • All but 1 1/2 mm are innervated by median (or a branch called the anterior interosseous nerve), the other 1 1/2 innervated by the ulnar • Three layers – superficial, intermediate and deep • Most have 1 Point of origin on the medial epicondyle - CFT

  34. Forearm • Posterior = dorsal • Extensors • Innervated by the radial nerve (or one of two branches called either posterior interosseous nerve or deep radial) • Three layers = superficial, intermediate and deep • Most have 1 point of origin on the lateral epicondyle - CET

  35. Anterior Surface • Superficial • P.Teres • Flexor Carpi Radialis • Flexor Carpi Ulnaris • Palmaris Longus

  36. Superficial Muscles

  37. Anterior Surface • Intermediate • Flexor Digitorum Superficialis

  38. Intermediate Layer -Origin

  39. Intermediate Layer - Insertion

  40. Anterior Surface • Deep Layer • Flexor digitorum profundus (anterior interosseous branch of median nerve • Flexor pollicus longus • Pronator quadratus (ant. Interosseous)

  41. Deep Layer - Origins

  42. Deep Layer - Insertions

  43. Compare Insertions

  44. Compare Insertions

  45. Nerves of Anterior Forearm

  46. Anterior Surface • Transverse Carpal Ligament AKA Flexor Retinaculum • Guyen’s Canal • Carpal Tunnel Syndrome

  47. TCL

  48. TCL – Median N.

  49. Guyens’ Tunnel – Ulnar N.

  50. Posterior Surface • Superficial • Brachioradialis • Extensor Carpi Radialis Longus • Extensor Carpi Radialis Brevis • Extensor Carpi Ulnaris

More Related