MCQ Neurosurgery Congenital malformation

  1. Type I and II Chiari malformation?
    • Type I - Displacment of cerebellar tonsil into cervical canalQ
    • Type II - Lesion represents an anomaly of the hindbrain
  2. What is anterior meningocele?
    Projects into pelvis through a defect in the sacrumQ
  3. What is Dandy-Walker malformation?
    • Cystic expansion of the 4th ventricle in the posterior fossa and midline cerebellar hypoplasiaQ
    • Results from a developmental failure of the roof of the 4th ventricleQ
  4. MC site of myelomeningocele?
    Lumbosacral region (75%)Q
  5. Triad of normal pressure hydrocephalus?
    • −−Abnormal gait (ataxic or apractic)Q
    • −−DementiaQ (usually mild to moderate, with an emphasis on executive impairment)
    • −−Urinary urgency or incontinenceQ
  6. Which nerve is entrapped in Carpal tunnel syndrome?
    Median neuropathyQ
  7. Clinical features of Carpel tunnel syndrome?
    • • Main symptom: Intermittent numbness of the thumb, index, long and radial half of the ring finger. Numbness often occurs at nightQ.
    • • Atrophy of thenar eminence and weakness of palmar abduction. Q
    • • Pain is primarily numbness that is so intense that it wakes one from sleepQ.
  8. What is Tinel’s sign?
    Percussion over the carpal tunnel
  9. What is Phalen’s testQ?
    Reproduction of paraesthesia with full wrist flexion
  10. Surgery for Carpel tunnel syndrome?
    Transverse carpal ligamentQ (creating space for the nerve)
  11. What is Neuropraxia?
    • • Reversible physiological nerve conduction blockQ
    • • Seen in crutch palsy, tourniquet palsy, and Saturday night palsyQ
  12. What is Axonotemesis?
    Loss of conduction due to axonal interruption
  13. What is Neurotemesis?
    Complete division of nerveQ
  14. Rate of regeneration of nerve?
    1 mm/dayQ.
  15. Prognosis after Nerve Suturing?
    Radial nerve (best)Q >Median nerve >Ulnar nerve >Peroneal nerve >Sciatic and femoral nerve (worst prognosis)Q
  16. What is nerve of Kuntz?
    Thoracic origin of a sympathetic supply to the upper limbQ
  17. Most common neurosurgical Treatment of Epilepsy?
    Anterior temporal lobectomyQ
  18. What is Kernohan’s Notch Phenomenon?
    • • Kernohan’s notch is a cerebral peduncle indentation associated with some forms of transtentorial herniation (uncal herniation)Q.
    • • Compression of the contralateral cerebral peduncle against the free edge of the tentorium (Kernohan’s notch) causes an ipsilateral hemiparesis with ipsilateral 3rd nerve palsyQ.
  19. What is Kernohan-Woltman sign?
    Lateral displacement of the midbrain may compress the opposite cerebral peduncle, producing a Babinski’s sign and hemiparesis contralateral to the original hemiparesis
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MCQ Neurosurgery Congenital malformation