Deep muscles of back of forearm

This presentation describes Deep muscles of back of forearm

Transcript

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