Nerve Roots Flashcards
C5 nerve root compression is associated with weakness in which movements?
Elbow flexion
C5 nerve root compression is associated with which reflex changes?
Biceps
Where would you find sensory changes in C5 nerve root compression?
Lateral arm
C6 nerve root compression is associated with weakness in which movements?
Wrist extension
C6 nerve root compression is associated with which reflex changes?
Biceps, Supinator
Where would you find sensory changes in C6 nerve root compression?
Lateral forearm, Thumb, Index finger
C7 nerve root compression is associated with weakness in which movements?
Elbow extension
C7 nerve root compression is associated with which reflex changes?
Triceps
Where would you find sensory changes in C7 nerve root compression?
Middle finger
C8 nerve root compression is associated with weakness in which movements?
and sensory changes where?
Finger flexion
Medial side lower forearm, Ring and little fingers
T1 nerve root compression is associated with weakness in which movements?
and sensory changes where?
Finger abduction
Medial side upper forearm, Lower arm
Which nerve roots make up the brachial plexus?
anterior rami of spinal nerves C5, C6, C7, C8, and T1
Which nerve roots make up the lumbar plexus?
anterior rami (divisions) of the lumbar spinal nerves L1, L2, L3 and L4
Which dermatomal & myotomal areas are affected by L1 nerve root compression?
Inguinal region
Hip flexors
Which dermatomal & myotomal areas are affected by L2 nerve root compression?
Anterior mid-thigh
Hip flexors
Which dermatomal & myotomal areas are affected by L3 nerve root compression?
Distal anterior thigh
Knee extension
Which reflex is absent in L3 nerve root compression?
Diminished or absent patellar reflex
Which dermatomal & myotomal areas are affected by L4 nerve root compression?
Medial lower leg/foot
Ankle dorsiflexors
Which reflex is absent in L4 nerve root compression
Diminished or absent patellar reflex
Which nerve roots make up the saccral plexus?
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.
Which dermatomal & myotomal areas are affected by L5 nerve root compression?
Lateral leg/foot
Hallux extension
Which dermatomal & myotomal areas are affected by S1 nerve root compression?
Lateral side of foot
Ankle plantar flexors and evertors
Which nerve roots are affected in absent achilles reflex?
L5 & S1
Which nerve roots are affected in absent patellar reflex?
L4 & L3
