Clinical Sensory And Motor - 4/20 Stephens Flashcards
Unilateral lesion of primary neurons from FG results in what?
FC?
Secondary neurons?
Ipsilateral loss of proprioception/2pt below level of lesion
Same but for upper body
Contralateral deficits
Destruction of the LCST results in what?
What clinical signs?
Affects what specifically?
Ipsilateral paralysis below the level of the lesion
Spastic paralysis, hyperreflexia, hypertonic, Babinski, clonus
UMN
Transection of the spinal cord above S2 interrupts what?
Results in what?
LRST and SAN
Reflex bladder, loses voluntary voiding
Unilateral lesions of LSTT result in what?
Contralateral loss of pain/temp 2 sensory dermatomes below levels of lesion
Destruction of the AWC results in what?
Bilateral loss of pain/temp to upper extremities (yoke-like anesthesia)
LMN paralysis results from what?
Where are they located?
Clinical symptoms?
Destruction of motor neurons/axons of 1 or more cranial or spinal motor nuclei
anterior (ventral) horn
Flaccid paralysis, areflexia, atonia, atrophy, fasciculations
Congenital absence of C type fibers results in what?
Insensitivity to pain
What does herpes zoster (shingles) infection compromise?
Clinical Sx?
Non-nociceptive A alpha/beta fibers
Increased sensitivity to pain from the sensory dermatome of the affected nerve
What is the treatment for intractable pain?
Where does it take place?
Anterolateral cordotomy
LSTT transected in the Anterolateral quadrant 2 segments above and on opposite side of the area of pain
What serves as the landmark bw the LSTT and the corticospinal fibers?
Denticulate ligaments
Unilateral lesions of the SL result in what?
Contralateral hemianalgesia and thermal hemianesthesia
A prefontal lobotomy was used as tx for intractable pain. What is a major side effect of this procedure?
Apathy
Syringomyelia may occur secondary to what?
Central cord syndrome
Enlargement of the syrinx results in what?
Destruction of AWC
Asymmetrical destruction of LCST
AH destruction
Posterior column destruction
Destruction of the LCST results in what?
Affects what?
Spastic paralysis, hyperreflexia, hypertonia
UMN
Destruction of Anterior horns results in what?
Affects what?
Flaccid paralysis, atrophy, areflexia, atonia of the upper limb musculature
LMN
Destruction of posterior columns result in what?
Ipsilateral anesthesia (prop/2pt) below the level of the lesion
The VSTT is associated with what?
Crude touch
What structures are most commonly affected in Tabes dorsalis?
Results in bilateral ischemic necrosis of what?
Lumbosacral nerves and spinal cord segments
Posterior columns and dorsal roots
5 most common signs and symptoms of Tabes Dorsalis?
Lightning pain from lower limbs due to irritation of type A pain fibers
Atonic bladder (dorsal root involvement)
Slapping gait due to loss of proprio
Positive Romberg test due to posterior columns
Argyll-Robertson pupils
Acute anterior poliomyelitis involves what?
Motor neurons of the anterior (ventral) horns and cranial nerve motor nuclei
What structures are most commonly involved in ALS, LMN and UMN?
LMN - AH cells, Hypoglossal Nucleus, Nucleus Ambiguus, Facial Motor Nucleus
UMN - degeneration of Corticospinal Tracts
Clinical signs of ALS?
Dysarthria Dysphagia Paresis of tongue Spastic paralysis Hyperreflexia Babinski sign NO SENSORY DEFECTS
Destruction of the dorsal roots of the spinal cord result in what?
What special condition?
Diminish motor reflexes including muscle tone
Atonic bladder
