Peripheral Neuropathies Flashcards
What is the definition of wallergian degeneration?
Nerve fiber is cut or crushed and everything distal degenerates
Define dermatome, myotome, and sclerotome?
Area of skin supplied by a single spinal nerve
Muscle group supplied by a single spinal nerve
Area of bone supplied by a single spinal nerve
Two most common nerve root levels involved in radiculopathy in the cervical spine and 2 in the lumbar?
C5-c6, which is c6 compression
C6-c7, which is c7 compression
L4-l5, which is l5 compression
L5-s1, which is s1 compression
Where is the pain, sensory, weakness and DTR loss in the following nerve roots being compressed?
C5, C6, C7, and C8?
5: scapula, shoulder. Lateral arm. Shoulder abduction. Biceps.
6: scapula, shoulder, proximal arm. Lateral arm and 1,2 fingers. Shoulder abduction and elbow flexion. Biceps and maybe BR.
7: scapula, shoulder/arm, elbow/forearm. 3 digit. Elbow ext. wrist ext. and finger ext. Triceps.
8: scapula, shoulder/arm, and medial forearm. 4 and 5 finger. Finger flexion and abduction. Finger flexors.
Where is the pain, sensory, weakness and DTR loss in the following nerve roots being compressed?
L4, L5, S1?
4: Anterior lateral thigh, knee, medial calf. Medial calf. Hip flexion and knee extension. Patella.
5: posterior thigh and lateral calf. Lateral calf and top of foot. Hamstrings, foot dorsiflexion, eversion, inversion. None.
S1. Post thigh and posterior calf. Posterior lat calf lateral foot. Hamstrings and ankle plantar flexion. Achilles.
What part of the body has sensory provided by the following spinal levels?
C6,c7,c8,t1,t4,t10,l1,l4,l5, s1?
Thumb and index Middle finger 4th and 5th finger Medial forearm Nipple line Umbilicus Inguinal Medial calf Lateral calf Posterior calf and lateral foot.
What 2 conditions can compress the medial cord of brachial?
What condition did he say can affect the upper trunk and lateral cord?
What condition can cause ischemia to the lumbar spine?
Breast or lung cancer
Radiation injury
Diabetes
4 things are impaired in peripheral nerve disease of large myelinated sensory fibers?
2 things impaired in peripheral nerve disease of small unmyelinated sensory fibers?
Light touch, 2 point, vibration and joint position.
Temp and pain
5 signs of peripheral nerve disease of motor neurons?
Atrophy, weakness, reduced or absent DTR, fasciculations, cramps
How do characterize median mononeuropathy?
What is another name for it and why?
What is the numbness pattern?
What is the syndrome we check for with what test and what 3 muscles are abnormal on EMG?
Gradual dull ache pain of the proximal forearm. People don’t wake up because of pain.
Pronator syndrome because pronation makes the pain worse
2 and 3 fingers
Anterior interosseous syndrome by OK sign test
FPL, FDP, and PQ
4 areas most commonly compressing the ulnar nerve?
Axilla, elbow, cubital tunnel and wrist
What sign from a special test suggests ulnar neuropathy?
Froment sign where you try to take a piece of paper from their thumb and finger and they flex their thumb to hold onto it
4 most common places for the radial nerve to be compressed and which one is most common?
Axilla, spiral grove in humerus (most common Saturday night palsy ), supinator, and wrist
What is the hallmark sign of radial neuropathy and why?
Wrist drop because weakness in extensors of wrist, finger and thumb
3 clinical features of radial neuropathy at the spiral groove or Saturday night palsy?
Weakness of wrist and finger extension but elbow extension is spared
