1 / 32

THE ELBOW

THE ELBOW. Sports Physiology. Anatomy. Humerus (distal) Medial epicondyle (5) Lateral epicondyle (2) Capitulum (3) Trochlea (4) Olecranon fossa (7) Coronoid fossa (6). Anatomy. Radius (proximal) Radial head Neck of radius Radial tuberosity Ulna (proximal) Olecranon process

uttara
Download Presentation

THE ELBOW

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. THE ELBOW Sports Physiology

  2. Anatomy • Humerus (distal) • Medial epicondyle (5) • Lateral epicondyle (2) • Capitulum (3) • Trochlea (4) • Olecranon fossa (7) • Coronoid fossa (6)

  3. Anatomy • Radius (proximal) • Radial head • Neck of radius • Radial tuberosity • Ulna (proximal) • Olecranon process • Ulnar tuberosity • Radial notch

  4. Bone Anatomy • Radius • Proximal • Radial Head • Radial Tuberosity • Radial Neck • Distal • Ulnar Notch • Radial styloid process

  5. Bone Anatomy • Ulna • Proximal • Olecranon • Olecranon Process • Coronoid Process • Trochlear notch • Radial notch • Ulnar tuberosity • Distal • Ulnar Styloid Process

  6. Elbow Articulations • Humeroulnar Joint • Humeroradial Joint • Proximal Radioulnar Joint • Distal Radioulnar Joint

  7. Elbow Joints • Three distinct joints • One joint capsule • Humeroulnar joint • Trochlea • Trochlear notch • Uniaxial hinge joint • Flexion/extension

  8. Elbow Joints • Humeroradial joint • Capitulum • Radial head • Modified hinge joint • Flex/ext and int/ext rotation • Radioulnar joint • Proximal • Uniaxial pivot joint • Radius pivots about ulna • Pronation/supination

  9. Ligamentous Support • Medial (Ulnar) Collateral Ligament • Anterior • Posterior • Oblique

  10. Ligaments • Medial support • Prevent excessive valgus stress • Ulnar collateral ligament (MCL or UCL) • Fan shaped ligament • Anterior oblique • Medial epicondyle  medial coronoid process • Primary medial support structure of the elbow • Posterior oblique • Medial epicondyle  olecranon process

  11. Ligamentous Support • Lateral (Radial) Collateral Ligament

  12. Ligaments • Lateral support • Prevents excessive varus stress • Radial collateral ligament (LCL) • Thickened aspect of lateral capsule • Lateral epicondyle  annular ligament • Radioulnar support • Annular ligament • Coronoid process  coronoid process • Maintains position of radial head in radial notch

  13. Ligaments • Interosseous membrane • Tough fibrous connective tissue • Oblique between radius and ulna • Length of forearm • Role: site for muscle origins and support for joint

  14. Ligamentous Support • Capsule posterior anterior

  15. Ligamentous Support • Annular Ligament

  16. Ligamentous Support • Quadrate Ligament

  17. Ligamentous Support • Dorsal and PalmarRadioulnar Ligaments

  18. Bursae • Subcutaneous olecranon bursa • Between olecranon and skin • Often acutely injured in sport • Subtendinous olecranon bursa • Between triceps brachii and olecranon • Often injured in repetitive microtrauma

  19. Muscular Anatomy • Motions • Flexion • Extension • Pronation • Supination • Muscles • Biceps • Triceps • Forearm

  20. Muscular Anatomy • Flexors • Biceps brachii • Insertion at radial tuberosity • Prime elbow flexor in supination • Brachioradialis • Origin at supercondylar ridge of humerus • Prime elbow flexor in neutral • Brachialis • Insertion at coronoid process of ulna • Prime elbow flexor in pronation

  21. Muscular Anatomy • Extensors • Triceps brachii • Insertion at olecranon process of ulna • Prime elbow extensor • Three heads • Long • Lateral • Medial

  22. Muscular Anatomy • Supinators • Supinator • Prime supinator of forearm • Biceps brachii • Pronators • Pronator quadratus • Pronator teres

  23. Biceps Brachii • O • Short head – coracoid process • Long head – supraglenoid tubercle of scapula • I – • Radial tuberosity • Biceps brachiiaponeurosis • N – Musculocutaneous • A– • Shoulder – flexion • Elbow – flexion, forearm supination

  24. Brachialis • O • Distal 2/3 anterior humerus • I • Ulna tuberosity • Coronoid process • N • Musculocutaneous • A • Elbow flexion

  25. Triceps Brachii • O – • Long Head – infraglenoid tubercle • Lateral Head – lateral and posterior surface of proximal ½ of body of humerus • Medial Head – distal 2/3 of medial and posterior surfaces of humerus below radial groove • I – • Posterior surface of olecranonproess • N – Radial • A– • Shoulder – long head – Ext and ADD • Elbow -- extension

  26. Anconeus • O – • Posterior lateral humeral epicondyle • I – • Lateral side of olecranon process • Upper ¼ posterior ulnar body • N – • Radial • A– • Assist with elbow extension

  27. Brachioradialis • O – • Upper 2/3 of lateral humeral supracondylar ridge • I – • Lateral radius just proximal to base of styloid process • N – • Radial • A– • Elbow flexion • Supination to midposition • Pronation to midposition

  28. Supinator • O – • Lateral humeral epicondyle • LCL • Annular ligament • I – • Lateral upper 2/3 of radius • N – • Radial • A– • Forearm supination

  29. Neurological Anatomy • Median nerve • Locale • At elbow in cubital fossa • Follows brachial artery • Middle of anterior forearm • Crosses wrist in carpal tunnel • Sensory • Palmar tip of index finger • Motor • Opposition and pronation

  30. Neurological Anatomy • Ulnar nerve • Locale • At elbow posterior to medial epicondyle (cubital tunnel) • Follows ulnar artery • Sensory • Palmar tip of little finger • Motor • 5th finger abduction

  31. Neurological Anatomy • Radial nerve • Locale • At lateral aspect of elbow • Follows radial artery • Sensory • 1st dorsal web space • Motor • Wrist extension

More Related