Cerebellar Signs

Topic discussion by : ENT – II department

Anatomy (and correlation of functions)

• There are three area of cerebellum….

LOBE FUNCTION

Anterior lobe Tone

Posterior lobe Coordination of movement

Flocculo-nodular lobe Balance

Anatomy (and correlation of functions)

Area of cerebellum function

Vermis Represent trunk (axial) musculature

Para-vermal area Represent limb musculature

Rest of cerebellar hemisphere

• By other method, we can devide it into….

Cerebellar signs

Involvement of anterior lobe (paleocerebellum)

Flail joints : lake of stability of joints

Pendular knee jerk : tapping of patellar tendon produces oscillating movements of leg.

Ataxia : inability in maintaining balance while walking

Cerebellar signs

Involvement of Posterior lobe (neocerebellum)

• Dysmetria : inability to measure the distance for reaching the intended target.• Tests - Finger nose test

- Finger finger test

• Intention tremor : due to dysmetria

• Dysdiadochokinesia : inability to do alternate opposite movement rapidly.• Eg. Supination and pronation

Cerebellar signs

• Dysarthria/ scanning of speech : speech is prolonged and with pauses in wrong places.

• Rebound phenomenon : pt is unable to check the action of agonist muscle by corresponding antagonist muscle.

Cerebellar signs

Involvement of flocculo-nodular lobe (Archiocerebellum)

• Trunkal Ataxia and staggering gait• Pt. is unsteady while standing and staggering while walking.• Walk with two legs well apart.• Sways from side to side

o Test : Romberg test

• Nystagmus• Involuntary to and fro oscillatory movement of eyeball while looking on either side.

Thank You