Dermatomes/Myotomes

Question 1

Abduction of arm

Answer 1

C5

Question 2

Flexion of fingers

Answer 2

C8

Question 3

Abduction and adduction of fingers

Answer 3

T1

Question 4

Flexion of elbow

Answer 4

C5/C6

Question 5

Extension of elbow

Answer 5

C6/C7

Question 6

Hip flexion

Answer 6

L1/L2

Question 7

Knee extension

Answer 7

L3/L4

Question 8

Dorsiflexion of the foot

Answer 8

L4

Question 9

Big toe extension

Answer 9

L5

Question 10

Foot eversion

Answer 10

S1

Question 11

Platarflexion of the foot

Answer 11

S1/S2

Question 12

What is central cord syndrome?

Answer 12

The most common injuury pattern that occurs with a hyperextension injury in a cervical spine with osteoarthrtisis. Causes paralysis of the arms more than the legs due to the corticospinal tracts of the upper limb being more central . Sacral sparing

Question 13

What is an anterior cord syndrome?

Answer 13

Loss of motor function (corticospinal tracts) as well as a loss of coarse touch, pain and temperature sensation (spinothalamic tract) with the dorsal columns being intact

Question 14

What is posterior cord syndrome?

Answer 14

Loss of dorsal colum function

Question 15

What is brown sequard syndrome?

Answer 15

Results from hemisection of the cord usually from a penetrating injury. Ipsilateral paralysis and loss of dorsalc olumn sensation with contralateral loss of pain, temeperature and coarse touch.

Question 16

What is the most common type of humerus fracture?

Answer 16

Fracture of the surgical neck with medial displacement of the humeral shaft due to the pull of the pectoralis major muscle.

Question 17

What kind of fracture is causes by a fall onto the point of the elbow?

Answer 17

Olecranon fracture

Question 18

What is monteggia fracture?

Answer 18

A fracture of the ulna occurs with dislocation of the radial head at the elbow. Requires fixation

Question 19

What is a galeazzi fracture?

Answer 19

Fracture of the radium with a dislocaton of the ulna at the distoradioular joint.

Question 20

What is a colles fracture?

Answer 20

Fracture of the distal radius with 1 inch of the articular surface with dorsal displacement following a fall on an outsretched hand with the wrist extended

Question 21

What is a specific late complication of a colles fracture?

Answer 21

Rupture of the extensor pollicis longus tendon

Question 22

What is a smiths fracture?

Answer 22

volarly displaced or angulated fracture of the distal radius following a fall on an outstretched flexed hand. This is highly unstable and always has to undergo fixation.