An inverted tendon reflex refers to the elicitation of the movement opposite to that normally seen when the reflex is elicited. Mechanism of Inverted Reflexes…
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Nervous system
Inverted Reflexes
Hoffmann’s Sign
History Method of Eliciting Hoffmann’s Reflex Mechanism of Positive Hoffmann’s Reflex Sudden stretch of the finger flexors causes involuntary finger flexor contraction due to activation…
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Motor March Phenomenon
Motor march phenomenon is a sign of reinnervation like Hoffman-Tinel’s sign which has been discussed earlier. Observed in: Axonotmesis Repaired Neurotmesis Not observed in: Neuropraxia…
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Romberg test
Tests the function of: Posterior or Dorsal column which may be impaired in: Subacute combined degeneration (SCD) of spinal cord (Vitamin B12 deficiency) Posterior cord…
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Deep tendon reflexes
Deep tendon reflexes are monosynaptic reflexes integrated at lamina IX of the spinal cord. Deep tendon reflexes may be interpreted as: Normal Diminished or absent…
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Beevor’s sign
Named after: Charles Edward Beevor Definition: Upward (Cephalad) movement of the umbilicus in a supine patient attempting either to flex the head onto the chest…
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Pregabalin vs Gabapentin
Both pregabalin and gabapentin are GABA analogues that bind to presynaptic neuron’s voltage-gated calcium channels (VGCC), specifically to the alpha-2-delta protein leading to reduced calcium…
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Conus Medullaris Syndrome vs Cauda Equina Syndrome : Anatomical basis and Mnemonic
Definitions Condition Vertebral level of injury Neurological level of injury ISNCI level of injury Conus Medullaris Syndrome (CMS) T12-L2 T12-S5 T11 Cauda Equina Syndrome (CES)…
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