Back, spine Flashcards
Achilles’ tendon
S1
Herniation of cervical IV disc most like where?
C5-C6
Patellar tendon
L4
S1 - sensory innervation to?
Lateral foot
‘Small toe’
L4 - sensory inn where?
Medial aspect of leg
MC herniation in lumbar and cervical vertebra?
Lumbar - between L4-L5 or L5-S1
Cervical - between C5-C6 or C6-C7
Triceps reflex
C7 - digits 2,3,4
Brachioradialis reflex
C6 - lateral forearm
Biceps brachi reflex
C5 - lateral arm
Herniated IV disc
Posterolateral
Why is disc herniation more common in posterolateral position?
Posterior annulus fibrosus is weaker than anterior
PLL is narrower and weaker than anterior
Curvature of primary curvature
Concave anteriorly
Thoracic, sacral
think: firST - sacral and thoracic curve first
Curvature of secondary curvature
Convex anteriorly
Cervical, lumbar
MC area involved in spina bifida occulta
L5-S1
Site of lumbar hernia
Lumbar triangle of petit
Damage to spinal cord at 4th lumbar spinal segment. Which column is spared?
Lateral horn
Only present in upper part
Weakness of R lower ex. Loss of pain and temp beginning at level of umbilicus. Dx? Which correlates to weakness of lower ex?
Brown sequard
Right lateral corticospinal
Loss of proprioception, vibratory sense, 2 of discrimination. Lower ex.
Dorsal column
Fasiculus gracilis
Pain and temp
Crude touch
Spinothalamic
Part of spinothalamic tract - for touch/ pressure
Anterior STT
Part of spinothalamic tract - for pain and temp
Lateral STT
Parts of dorsal column
Gracilis
Cuneatus
Degeneration of posterior column in syphillis
Tabes dorsalis
Syringomyelia
Central cord syndrome
Affects spinothalamic tract
Cape-like distribution
Polio
Anterior horn
Pure LMN
ALS
Pure motor
Anterior horn + corticospinal tract
UMN and LMN
