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Upper Extremity Joints

Upper Extremity Joints. Sternoclavicular Joint. proximal end of clavicle with the manubrium of the sternum a fibrocartilaginous disk is interposed between the two surfaces SC joint is very weak in bony arrangement but has very strong ligamentous stability. Sternoclavicular Joint.

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Upper Extremity Joints

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  1. Upper Extremity Joints

  2. Sternoclavicular Joint • proximal end of clavicle with the manubrium of the sternum • a fibrocartilaginous disk is interposed between the two surfaces • SC joint is very weak in bony arrangement but has very strong ligamentous stability

  3. Sternoclavicular Joint

  4. Sternoclavicular joint

  5. Sternoclavicular Joint Ligaments • Anterior Sternoclavicular: prevents upward displacement of clavicle • Posterior Sternoclavicular: prevents upward displacement of clavicle • Interclavicular: prevents lateral displacement of clavicle • Costoclavicular: prevents lateral and upward displacement of clavicle

  6. Acromioclavicular Joint • gliding articulation of the lateral end of the clavicle with the acromion process • a weak joint surrounded by a thin, fibrous sleeve and 3 ligaments

  7. Acromioclavicular Joint

  8. AC Joint

  9. Acromioclavicular joint

  10. Acromioclavicular Joint Ligaments • Superior Acromioclavicular Ligament • Inferior Acromioclavicular Ligament • Coracoclavicular Ligament • Conoid • Trapezoid

  11. Superior Acromioclavicular Ligament

  12. Inferior Acromioclavicular Ligament

  13. Coracoclavicular Ligament Conoid Trapezoid

  14. Glenohumeral Joint • the true shoulder joint • ball and socket joint made up of the round head of the humerus and the glenoid cavity of the scapula • a fibrocartilaginous rim known as the glenoid labrum deepens the cavity • surrounding the articulation is a loose, articular capsule

  15. Glenohumeral Joint

  16. Glenohumeral Joint

  17. Glenohumeral Joint

  18. Glenohumeral Joint Ligaments • Superior Glenohumeral Ligament • Middle Glenohumeral Ligament • Inferior Glenohumeral Ligament • Coracohumeral Ligament

  19. Superior Glenohumeral Ligament

  20. Middle Glenohumeral Ligament

  21. Inferior Glenohumeral Ligament

  22. Inferior Glenohumeral Ligament

  23. Inferior Glenohumeral Ligament

  24. Coracohumeral Ligament

  25. Glenoid Labrum

  26. Glenoid Labrum

  27. Glenoid Labrum

  28. Subacromial Bursa

  29. Subacromial Bursa

  30. Joint Capsule

  31. Brachial Plexus • 5 anterior nerve rami subdivisions create a nerve network known as the brachial plexus (C5-T1 spinal nerve segments)

  32. Brachial Plexus

  33. Brachial Plexus

  34. Elbow Joint • Articulations of elbow joint are; • Capitulum (lateral condyle of humerus) with the radius • Trochlea (medial condyle of humerus) with the ulna • surrounded by a joint capsule with supporting ligaments

  35. Elbow Joint

  36. Elbow Joint

  37. Elbow Joint Ligaments • Ulnar Collateral Ligament(UCL) • Radial Collateral Ligament • Annular Ligament: stabilizes and encircles the head of the radius

  38. Ulnar Collateral Ligament (UCL)-Upper Band

  39. Ulnar Collateral Ligament (UCL)-Upper Band

  40. Ulnar Collateral Ligament (UCL)-Oblique Band

  41. Ulnar Collateral Ligament (UCL)-Oblique Band

  42. Ulnar Collateral Ligament (UCL)-Posterior Band

  43. Ulnar Collateral Ligament (UCL)-Posterior Band

  44. Ulnar collateral ligament

  45. Radial Collateral Ligament

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