Week 2 Miscelaneous

Question 1

Dermatome sensory assessment

Answer 1

C5 - Deltoid
C6- Thumb
C7 - Middle Finger (long finger)
C8 - Pinky Finger
T1 - Ulnar side of the forearm

Skin surface area

Question 2

Nerve root and muscle strength assessment

Answer 2

C5 - deltoid
C6 - Extensor Carpi radialis Longus and Extensor Carpi Radialis Brevis
C7 - Triceps
C8 - Flexor Digiti Superficialis, and Flexor Digiti Profundus
T1 - Intrinsics of the hand (abduction and adduction)

Myotome strength assessment

Question 3

Myotome

Answer 3

Group of muscles innervated by a single nerve root. Myotomal weakness = muscle weakness

Question 4

Dermatome

Answer 4

Area on the skin innervated by the same nerve root.

“Dermatomal paresthesia”

Peripheral nerve injury with corresponding loss of sensation

Question 5

Anatomical snuff box

Answer 5

Tendon- extensor policies breves, extensor policies longus, abductor policies longus
Artery- Radial
Bone- scaphoid
Nerve- superficial branch of the radial nerve

Question 6

Brachioradialis

Answer 6

O- supracondylar ridge of the lateral persuasion
I- lateral side of the distal radius
A- Elbow flexion
N. Radial

Question 7

Extensor carpi radialis longus

Answer 7

0- supracondylar ridge
I- base of the second metatarsal
A- wrist extension and radial deviation
N. Radial

Question 8

Extensor carpi radialis brevis

Answer 8

0- common extensor tendon
I- base of the third metatarsal
a- extension of the wrist
N. Radial

Question 9

Extensor digitorum

Answer 9

O- common extensor tendon
I- extensor expansions of the four fingers
Action- extension of the wrist, dip, pip, and CMC joints
N. Radial

Question 10

Extensor digiti minimi

Answer 10

O. Common extensor tendon
I- extensor expansion of the 5th finger
Action- exertion of dip, pip and MCP of the little finger
N. Radialis

Question 11

Extensor carpi ulnaris

Answer 11

0- common extensor tendon and posterior border of ulna
I _ base of the fifth metatarsal
A_ extension of the wrist and ulnar deviation
N. Radialis

Question 12

Supinator

Answer 12

O- lateral epicondyle of the humerus, posterior surface of proximal ulna
I- proximal third of the lateral side of radius
Action-suppination of forearm
N- Radial

Question 13

Abductor pollicis longus

Answer 13

O- middle third of the ulna, radius, and interosseous membrane
I- base of the first Metacarpal
A- abduction and extension of the thumb from the CMP joint
N. Radial

Question 14

Extensor policies longus

Answer 14

Origin- middle one third of the ulna and the interposes membrane
Insertion - base of the distal phalanx
Action- flexion of the ip and the MCP of the thumb
Innovation - Radial nerve

Question 15

Extensor indices

Answer 15

Origin- one third of the distal radius and interosseous membrane
Insertion- extensor expansion of the index finger
Actions- extension of dip, pip and MC joints of the index finger
Innervation- radial nerve

Question 16

Extensor pollicis brevis

Answer 16

O_ middle third of the radius and interosseous membrane
I- base of the proximal phalanx
A- extension of the MCP and CMC joints
N. Radial

Question 17

Cutaneous nerves of the Palm

Answer 17

Proximal to distal-
Palmar cutaneous branch of the ulnar Nerve
Digital branches of the ulnar nerve
Medial that goes under the carpal tunnel turns to digital branches of the Median nerve, the palmar cutaneous branch of the Median nerve is spared

Question 18

Ligaments of the sternoclavicular joint

Answer 18

Cost clavicular, interclavicular, stemoclavicular (anterior and postenor)

Question 19

Intracapsular ligaments of the acromioclavicular joint

Answer 19

Acromiocavianlarligament

Question 20

Extracapsulor ligaments of acromioclavicaler joint

Answer 20

Connoid and trapezoid

Question 21

F