Neurology Potpourri - 2 Flashcards
T/F: Carpal tunnel is MC in women.
TRUE
What are the risk factors of carpal tunnel?
Obesity
Pregnancy
What disease involves the following structures:
- flexor retinaculum (transverse carpal ligament)
- carpal bones
- 9 flexor tendons
- Median nerve
Carpal Tunnel Syndrome
What sensory and motor deficits would a patient with Carpal Tunnel Syndrome present with?
Motor:
- ABductor pollicis brevis
- Flexor pollicis brevis (SF head)
- Opponens pollicis
- 1st & 2nd lumbricals
What disease does this describe?
Median nerve compression –> inflammation –> ischemia –> nerve damage
CTS (carpal tunnel syndrome)
What disease?
Extrinsic:
Compression is work related (typing on a keyboard)
Recreation related (cycling)
Positional (sleeping)
Intrinsic:
small anatomical space
fluid retention during pregnancy
tendon inflammation due to overuse or connective tissue disorder
CTS
Clinical presentation of what disease?
- aching radiating to the thenar area
- pain + numbness
- dropping objects, cannot open jars or twist off lids
- pain worsened by repetitive motion/ remaining stationary
CTS
Clinical Px of what dz?
- sx worse @ night
- pt awakens at night with pain or numbness & needs to “shake out” involved hand/wrist (flick sign)
CTS
What dz is this?
Physical Exam:
- Inspect for thenar atrophy
- thumb opposition against resistance
- sensation over median nerve (Phalens & Tinnels)
CTS
What is the Dx & Tx of CTS
Clinical Dx
+/- nerve conduction testing
Treatment:
1. NSAIDS
2. PT
3. Wrist Splint @ night
+/- ergonomic modifications
How do you treat CTS if initial treatments didnt work?
Ortho surgery consultation
steroid injection
carpal tunnel release
Describe anatomy of ulnar nerve
passes through condylar groove b/w medial epicondyle & olecrenan
Clinical Px for which disease?
- Paresthesias, tingling, numbness in medial hand, 1/2 of 4th finger, entire 5th finger.
- pain @ elbow/forearm
- Dec. sensation in ulnar distribution
- Tinel’s sign @ elbow.
Ulnar neuropathy (cubital tunnel syndrome)
Tx for ulnar neuropathy
- elbow pads
- surgical tx performed IF:
1. no improvement after 6-12 wks conservative tx
2. progressive palsy or paralysis
3. muscle wasting, clawing
Clinical Px of what?
- wrist drop
- cannot extend finger or abduct thumb
- sensory loss in dorsal web b/w thumb and index finger
- normal tricepts & brachioradialis strength
- triceps reflex intact
- spontaneously recovers in 6-8 weeks
Radial neuropathy
Tx of radial neuropathy
cock-up wrist & finger splints
PT
Clinical Px of what?
- paresthesias, numbness, occasionally pain in lateral thigh
- Sx increased with standing/walking
- sx relieved by sitting
- knee reflexes intact
Lateral cutaneous femoral neuropathy
“Meralgia paresthetica”
What is another name of lateral cutaneous femoral neuropathy?
meralgia paresthetica
T/F: meralgia paresthetica (lateral cutaneous femoral neuropathy) resolves spontaneously over wks-mos but CANNOT have permanent numbness
False: you CAN have permanent numbness
Tx of lateral cutaneous femoral neuropathy (meralgia paresthetica)
weight loss
avoid tight belts
analgesics (lidocaine patch)
NSAIDS
neuropathic pain meds
What is another name of Lateral cutaneous femoral neuropathy?
skinny jeans syndrome
Causes of skinny jean syndrome (lateral cutaneous femoral neuropathy OR meralgia paresthetica)
obesity
belts w/stuff hanging off
skinny jeans & heels
Clinical Px for what dz?
- Foot drop
- sensory loss
- onset upon wakening
- NO pain
Peroneal neuropathy
Which dz must you differentiate from L5 radiculopathy?
Peroneal neuropathy
What dz is this?
acute idiopathic facial nerve (CN VII) mononeuropathy
Lower motor neuron “lesion”
weakness –> paralysis
caused by HSV
Bell Palsy
What are risk factors of Bell Palsy?
DM
pregnancy in 3rd trimester
Clinical px of what dz?
- sudden onset, peaks by 3 days
- forehead unfurrows
- facial creases & nasolabial fold disappear
- corner of the mouth droops
- sagging of the lower eyelid
- tearing from the eye
- loss of corneal reflex
Bell Palsy
What is the main difference between Bell Palsy vs. Stroke?
Stroke spares the forehead
Bell Palsy does not
Bell’s palsy is a _______ lesion.
Stroke is a _______ lesion.
Peripheral
Central
How do you dx Bell Palsy (main dx)?
Dx based on history & physical exam