Peripheral neuropathies- Definitions

Question 1

Symmetric bilateral proximal limb weakness that does not involve the face or orbits
Waddling gait, atrophy, hyporeflexia

Answer 1

Myopathy

Question 2

Diffuse dysfunction of neuromuscular junctions
Weakness of orbital muscles, larynx, pharynx, face, opthalmoparesis
Dysarthria, dysphagia, dysphonia

Answer 2

Neuromuscular junctionopathy

Question 3

Diffuse dysfunction of peripheral nerves, abnormalities starting in feet and hands
Decreased muscle stretch reflexes, weakness of foot dorsiflexion– high stepping, slappping, ataxic gait

Answer 3

Polyneuropathy

Question 4

Involves skin of : entire anterior hand, distal posterior thumb, index finger, middle finger, lateral half of ring finger; palm is spared
LMN abnormalities in thenar muscles- weakness of opposition, abduction, flexion of thumb

Answer 4

Median neuropathy at the carpal tunnel

Question 5

Involves skin of: anterior and posterior parts of the medial hand including the little finger and medial half of the ring finger
LMN abnormalities: weakness in abduction and adduction of digits, little finger opposition, extension of ring and little finger. all muscles except thenar
Possible to see weakness of distal arm muscles, weakness of ring and little finger flexion or wrist flexion

Answer 5

Ulnar neuropathy at the elbow

Question 6

Involves skin of: lateral part of posterior hand including prosimal parts of the posterior thumb, index finger, middle finger, and lateral half of ring finger
LMN abnormalities in muscles of distal arm, wrist drop, weakness of thumb abduction, hand supination, elbow flexion, diminished brachioradialis refle

Answer 6

Radial neuropathy at spiral groove

Question 7

Somatosensory abnormalities of lateral part of proximal leg

Answer 7

Lateral femoral cutaneous neuropathy

Question 8

Involvement of skin of the lateral part of distal leg and superior and medial parts of foot
LMN abnormalities in muscles of foot dorsiflexion, foot eversion, toe extension

Answer 8

Common peroneal neuropathy at the knee

Question 9

Involvement of the skin of lateral parts of proximal and distal leg and superior and medial parts of foot
LMN: weakness of muscles of hip abduction, knee flexion, foot dorsiflexion, foot eversion, foot inversion, toe extension

Answer 9

5th lumbar radiculopathy

Question 10

nvolvement of skin of posterior parts of proximal and distal leg, inferior and lateral parts of foot
LMN: weakness of muscles of hip extension, knee flexion, foot plantarflexion, toe flexion. Achilles reflex may be diminished

Answer 10

1st sacral radiculopathy

Question 11

Involvement of skin of posterior parts of proximal and distal arm, posterior hand, anterior and posterior middle finger
LMN: weakness in muscles of elbow extension, hand pronation, wrist flexion and extension, finger extension
Triceps reflex may be diminished

Answer 11

7th cervical radiculopathy

Question 12

Involvement of skin of lateral parts of proximal and distal arm, lateral hand, anterior and posterior thumb and index finger
LMN abnormalities in muscles of elbow flexion, hand supination, wrist extension
Biceps and brachioradialis reflexes may be diminished

Answer 12

6th cervical radiculopathy