Cerebellar signs

Medicine PG poster presentation

1. CEREBELLAR SIGNS
References: 1. Paul Braciz 2. Dejong
INTENTIONAL TREMOR

TREMOR APPEARS AT
GOAL POINT OF ACTION
Due to hypotonia and irregular
muscle contraction
LESION OF POSTERIOR LOBE ( dentate nucleus)
DYSMETRIA INABILITY TO ARREST
MOVEMENT AT DESIRED
POINT.
FINGER – NOSE TEST
Patient asked to touch the tip
of his nose with tip of index
finger, first with open eyes and
then closed
LESION OF POSTERIOR LOBE
DYSSYNERGIA DIFFICULTY IN
PERFORMING COMPLEX
MOVEMENTS
LESION OF POSTERIOR LOBE
DYSDIADOKINESIA CANNOT EXECUTE RAPID
AND REPEATED
MOVMENTS SMOOTHLY
Patient asked to repeatedly
supinate and pronate his right
hand over left palm rapidly and
vice versa
Due to incoordination between
agonists and antagonists
LESION OF POSTERIOR LOBE
REBOUND PHENOMENON LIMB OVERSHOOTS
BEYOND NORMAL RANGE
AFTER SUDDEN RELEASE
OF RESISTANCE
Due to failure of agonists to
relax and contraction of
antagonists when resistance is
removed
LESION OF POSTERIOR LOBE
PENDULAR KNEE JERK More than three oscillations of
equal excursion of lower limb
from neutral position noted on
elicitation of a knee jerk
LESION OF POSTERIOR LOBE
TRUNCAL ATAXIA Not able to stand or sit erect
and swaying to either side
while attempting to maintain
normal posture with eyes open
LESION OF FLOCULONODULAR LOBE
GAIT STAGGERING OR REELING
GAIT – Walks with a wide
base with deviation and fall to
the side of lesion
LESION OF VERMIS