Muscles of the Back of Forearm

This presentation describes Muscles of the Back of Forearm of upper limb

Transcript

1. Muscles of the Back of Forearm
2. SUPERFICIAL GROUP 1- Lateral muscles (on lateral border of forearm): - Brachioradialis muscle. - Extensor carpi radialis longus muscle. - Extensor carpi radialis brevis muscle. 2- Medial muscles (on back of forearm): - Extensor digitorum muscle. - Extensor digiti minimi muscle. - Extensor carpi ulnaris muscle. - Anconeus muscle.
3. 1-Bachio-radialis m. 2-Extensor carpi radialis longus m. 3-Extensor carpi radialis brevis m. 7-Anconeus 4-Extensor digitorum 5-Extensor digiti minimi 6-Extensor carpi ulnaris Abductor pollicis longus Extensor pollicis brevis Extensor retinaculum Medial Lateral Tendon of ext.pollicis longus
4. Brachio-radialis Extensor carpi radialis longus Extensor carpi radialis brevis Extensor digitorum Extensor digiti minimi Extensor carpi ulnaris Extensor retinaculum Anconeus Abductor pollicis longus m. Extensor pollicis brevis m. Tendon of extensor pollicis longus Anatomical snuff box
5. Deep Muscles of Back of Forearm 1- Supinator muscle. 2- Abductor pollicis longus muscle. 3- Extensor pollicis brevis muscle. 4- Extensor pollicis longus muscle. 5- Extensor indicis muscle.
6. Orientation
7. Anconeus muscle 1-Supinator muscle 2-Abductor pollicis longus 3-Extensor pollicis brevis 4-Extensor pollicis longus 5-Extensor indicis Deep muscles of the back of forearm Anatomical snuff box Extensor retinaculum
8. Revision of Parts of Ulna & Radius
9. Lateral Surface of Ulna Supinator fossa Supinator crest Radial notch
10. Anterior oblique line Posterior oblique line Insertion of pronator teres Posterior surface of ulna Posterior surface of Radius Interosseous membrane
11. Supinator Muscle
12. Site of Supinator Muscle
13. Supinator m. Dr. Sherif Fahmy Medial Lateral Supinator muscle in the floor of cubital fossa
14. 1-Supinator muscle Supinator muscle in the deep muscles of the back of forearm
15. Origin of superficial fibers of supinator m. from lateral epicondyle Insertion of supinator m. Origin of deep fibers of supinator. Attachments of Supinator muscle Insertion of pronator teres
16. Posterior view of elbow region Lower end of humerus Upper end of ulna Lateral ligament of elbow j. Annular lig. Origin: Deep fibers of Supinator m. from supinator fossa & crest Posterior oblique line
17. Anterior view of elbow region Lateral lig. of elbow Annular ligamrnt Deep fibers of supinator muscle Anterior oblique line
18. Anterior view of elbow region Superficial fibers Lateral epicondyle Radial collateral ligament of elbow j. Annular ligament
19. Posterior view of elbow region Superficial fibers Deep fibers
20. Abductor pollicis longus, Extensor pollicis brevis, Extensor pollicis longus & extensor indicis
21. Origin of Deep Muscles of the Back of Forearm
22. Origin of abductor pollicis longus Origin of extensor pollicis brevis Origin of extensor pollicis longus Origin of extensor indicis m. Insertion of anconeus m Insertion of supinator m
23. Insertion of deep muscles of the back of forearm Insertion of abductor pollicis longus Insertion of extensor pollicis brevis Insertion of extensor pollicis longus Extensor indices is inserted into extensor expansion of index.
24. 2- Abductor Pollicis Longus Muscle
25. Abductor pollicis longus
26. Origin of abductor pollicis longus Insertion of anconeus m. Insertion of supinator m. Insertion into lateral side of base of 1st metacarpal bone
27. Action of abductor pollicis longus: -Abduction of thumb at carpo- metacarpal joint of thumb. -Helps abduction of wrist. -Flexion of wrist when other flexors are paralyzed. Nerve supply: -Posterior interosseous nerve.
28. 3- Extensor Pollicis Brevis Muscle
29. Abductor pollicis longus Extensor pollicis brevis Insertion into dorsum of base of proximal phalanx of thumb
30. Origin of abductor pollicis longus Origin of extensor pollicis brevis Insertion into dorsum of base of proximal phalanx of thumb
31. Action of Extensor pollicis longus m. -Extends thumb at metacarpo- phalangeal and carpo-metacarpal joints. Nerve supply: Posterior interosseous nerve from radial.
32. 4- Extensor pollicis longus Muscle
33. Abductor pollicis longus Extensor pollicis longus Insertion into dorsum of base of terminal phalanx of thumb
34. Origin of abductor pollicis longus Origin of extensor pollicis longus m. Insertion into dorsum of base of terminal phalanx of thumb
35. Action of Ext. pollicis longus -Extension of all joints of thumb. Nerve supply: Posterior interosseous nerve
36. 5- Extensor Indicis Muscle
37. Origin of extensor pollicis longus Origin of extensor indicis Insertion into extensor expansion of index
38. Extensor indicis Extensor pollicis longus Insertion into dorsum of base of terminal phalanx of thumb Extensor expansion
39. Action of Extensor Indicis m. -Extends all joints of index. -Helps extension of wrist. Nerve supply: -Posterior interosseous nerve.
40. Posterior Interosseous Nerve
41. Radial nerve Deep radial nerve (posterior interosseous nerve) Dr. Sherif Fahmy Supinator muscle
42. Superficial fibers of supinator m. Deep fibers of supinator m. Posterior interosseous nerve Posterior interosseous artery Extensor pollicis longus m. Interosseous recurrent artery
43. Extensor Retinaculum
44. Attachments of Extensor Retinaculum Lateral: -Lower part of anterior border of radius. Medial: -Triquetral and pisiform bones.
45. Extensor retinaculum Lateral attachment: -Lower part of anterior border of radius. Medial attachment -Triquetral and pisiform bone
46. Superficial Relations Laterally: -Superficial radial nerve. -Beginning of cephalic vein. Medially: -Dorsal cutaneous branch of ulnar nerve. -Beginning of basilic vein.
47. Superficial radial nerve Dorsal cutaneous branch of ulnar nerve
48. Cephalic vein Basilic vein
49. Deep Relations (Compartments) 1st compartment: -Tendon of abductor pollicis longus. -Tendon of extensor pollicis brevis. 2nd compartment: -Tendons of extensor carpi radialis longus and brevis. 3rd compartment: -Tendon of extensor pollicis longus. 4th compartment: -Tendons of extensor digitorum & extensor indicis. -Posterior interosseous nerve. -Anterior interosseous artery. 5th compartment: -Tendon of extensor digiti minimi. (Behind inferior radioulnar joint) 6th compartment: -Tendon of extensor carpi ulnaris.(behind lower end of ulna) Behind lower end of radius
50. Abductor pollicis longus Extensor pollicis brevis 1 Extensor carpi radialis longus Extensor carpi radialis brevis 2 Extensor pollicis longus 3 -Extensor digitorum and ext. indicis -Posterior interosseous nerve. -Anterior interosseous artery 4 Extensor digiti minimi 5 Extensor carpi ulnaris 6
51. 1-Abductor pollicis longus & extensor pollicis brevis 2-Tendons of extensor carpi radialis longus & brevi 3-Tendon of ext. pollicis longus 4-Tendons of extensor digitorum 4-Tendon of extensor indicis 5-Tendon of extensor digiti minimi 6-Tendon of extensor carpi ulnaris Dorsal tubercle of Lister Dr. Sherif Fahmy Lateral Medial
52. Anatomical Snuff Box
53. Anatomical snuff box
54. Boundaries
55. Tendon of abductor pollicis longus Tendon of extensor pollicis brevis Tendon of extensor pollicis longus Lateral Dr. Sherif Fahmy
56. Roof
57. Superficial radial nerve Beginning of cephalic vein
58. Floor
59. Trapezium Scaphoid Styloid process of radius Dr. Sherif Fahmy
60. Scaphoid Trapezium Styloid process of radius
61. Contents
62. Tendon of extensor carpi radialis brevis Tendon of extensor carpi radialis longus Radial artery Lateral