Feb 22, 2023
TYPE I CHIARI MALFORMATION
TYPE II CHIARI MALFORMATION
Investigation
KERNOHAN WOLTMAN SIGN
CENTRAL HERNIATION
SUBFALCINE HERNIATION
TONSILLAR/DOWNWARD CEREBELLAR HERNIATION
DURET HEMORRHAGE
Types
SPINA BIFIDA OCCULTA |
SPINA BIFIDA APERTA |
|
|
Asymptomatic with normal Neurological finding & full thickness skin covering.
Ischemic (85%) |
Hemorrhagic (15%) |
|
|
(KERNOHAN’S Notch) ⮕ I/L Hemiparesis & I/L 3rd Nerve Palsy
Lateral Displacement of MIDBRAIN
↓
Compress opposite cerebral peduncle
↓
Babinski sign, Hemiparesis C/L to original Hemiparesis
↓
Forced through Tentorium.
↑ Intracranial Tension (ICT)→ Cause Downward herniation of Brainstem
↓
Stretching of perforators of Basilar artery.
↓
Leads to Bleeding
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