Lesion localization Flashcards
what happens to tone, atrophy, fasiculations, weakness, reflexed and plantar un UMN lesion
tone - spacticity atrophy - none fasiculations - none weakness - pyramidal reflexes - increased plantar - extensor
what happens to tone, atrophy, fasiculations, weakness, reflexed and plantar un LMN lesion
tone - loss atrophy - yes fasiculations - yes weakness - peripheral nerve reflexes - decreased plantar - flexor
what does both sense and motor loss rule out
- muscle
- NMJ
- ant. horn cell
what is central lesion that can cause foot drop
foot area of motor cortex
what is 4 peripheral lesions that can cause foot drop
- peroneal nerve
- sciatic nerve
- lumbosacral nerve root
- L5 nerve root
what nerve supplies dorsiflexion
deep peroneal
what nerve suppies ankle eversion
superficial peroneal
what are 4 common causes of common peroneal neuropathy
- leg crossing
- prolonged kneeing or squatting
- prolonged immobility
- weight loss
4 muscles supplied by median nerve distal to carpal tunnel
- abductor pollicis
- opponens pollicis
- flexor pollicis brevis
- lumbricles 1 and 2
what does involvement of muscle proximal to tunnel tell us
lesion not due to tunnel
what is main symptom of CTS
tingling in hand - pain can be present, but tingleing is main
what hand is CTS most common in
dominant, but 55% are bilateral
what are diagnostic tests
- history
2. whalens or tinel test, but poor sensitivity
what would one find in a radiculopathy, but not CTS
- neck pain with radiation
- Sx due to neck movements
- C6-7 muscle weakness
- reduced or absent bicep, brachioradialis reflexes
3 blood tests to do in CTS
- glucose - diabetes
- TSH - hypothyroid
- rheummatoid factor
