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Upper Limb Neuro


March 4th, 2023

Upper Limb Dysdiadochokinesis

Dysdiadochokinesis is the inability to perform rapidly alternating contractions of agonist and antagonist muscles.
This sign is indicative of cerebellar disease due to ischaemia, haemorrhage, tumour or multiple sclerosis.
  • How to Elicit

  • Ask the patient to place one hand in the palm of the other hand. Demonstrate rapidly flipping (pronation and supination) of the hand, asking for them to mimic this movement.
  • Abnormal If

  • Inability to rapidly alternate movements.
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