Nerve Roots

Question 1

C5 nerve root compression is associated with weakness in which movements?

Answer 1

Elbow flexion

Question 2

C5 nerve root compression is associated with which reflex changes?

Answer 2

Biceps

Question 3

Where would you find sensory changes in C5 nerve root compression?

Answer 3

Lateral arm

Question 4

C6 nerve root compression is associated with weakness in which movements?

Answer 4

Wrist extension

Question 5

C6 nerve root compression is associated with which reflex changes?

Answer 5

Biceps, Supinator

Question 6

Where would you find sensory changes in C6 nerve root compression?

Answer 6

Lateral forearm, Thumb, Index finger

Question 7

C7 nerve root compression is associated with weakness in which movements?

Answer 7

Elbow extension

Question 8

C7 nerve root compression is associated with which reflex changes?

Answer 8

Triceps

Question 9

Where would you find sensory changes in C7 nerve root compression?

Answer 9

Middle finger

Question 10

C8 nerve root compression is associated with weakness in which movements?
and sensory changes where?

Answer 10

Finger flexion

Medial side lower forearm, Ring and little fingers

Question 11

T1 nerve root compression is associated with weakness in which movements?
and sensory changes where?

Answer 11

Finger abduction

Medial side upper forearm, Lower arm

Question 12

Which nerve roots make up the brachial plexus?

Answer 12

anterior rami of spinal nerves C5, C6, C7, C8, and T1

Question 13

Which nerve roots make up the lumbar plexus?

Answer 13

anterior rami (divisions) of the lumbar spinal nerves L1, L2, L3 and L4

Question 14

Which dermatomal & myotomal areas are affected by L1 nerve root compression?

Answer 14

Inguinal region

Hip flexors

Question 15

Which dermatomal & myotomal areas are affected by L2 nerve root compression?

Answer 15

Anterior mid-thigh

Hip flexors

Question 16

Which dermatomal & myotomal areas are affected by L3 nerve root compression?

Answer 16

Distal anterior thigh

Knee extension

Question 17

Which reflex is absent in L3 nerve root compression?

Answer 17

Diminished or absent patellar reflex

Question 18

Which dermatomal & myotomal areas are affected by L4 nerve root compression?

Answer 18

Medial lower leg/foot

Ankle dorsiflexors

Question 19

Which reflex is absent in L4 nerve root compression

Answer 19

Diminished or absent patellar reflex

Question 20

Which nerve roots make up the saccral plexus?

Answer 20

anterior rami (divisions) of the sacral spinal nerves S1, S2, S3 and S4
It also receives contributions from the lumbar spinal nerves L4 and L5.

Question 21

Which dermatomal & myotomal areas are affected by L5 nerve root compression?

Answer 21

Lateral leg/foot

Hallux extension

Question 22

Which dermatomal & myotomal areas are affected by S1 nerve root compression?

Answer 22

Lateral side of foot

Ankle plantar flexors and evertors

Question 23

Which nerve roots are affected in absent achilles reflex?

Answer 23

L5 & S1

Question 24

Which nerve roots are affected in absent patellar reflex?

Answer 24

L4 & L3