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March 3, 2014: Rebound phenomenon

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March 3, 2014

 

Diseases of the cerebellum can present with many signs like dysarthria, dysdiadochokinesia, dyssynergia, ataxia, and nystagmus.  In the Stewart-Holmes test, the patient is asked to flex the forearm against examiner resistance and then the examiner suddenly releases the resistance. After slight flexion, there is a normal recoil of the limb towards the examiner.  However, in cerebellar diseases, the limb moves excessively toward the patient.  Lack of recoil (rebound) is attributed to the antagonist muscle (triceps) not reacting to sudden stretch resulting in unchecked excessive flexion.

 

Reference

 

1. Nicolaas JM arts, Bruyn GW.   No rebound phenomenon of Stewart-Holmes, in the text book of Neurological eponyms, Oxford University Press 2000; 172-178.

Submitted by: A H Harish, MD, Neurology resident, Bombay hospital, Mumbai, India

 

Disclosures: Dr. Harish reports no disclosures

 

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