Synkinetic Wrist Extension Maneuver demonstrating Radial Nerve Palsy as cause for Wrist Drop



Up up, down down. Higher ( cortical lesions) with synkinetic wrist extension can be distinguished from lower radial nerve palsy with finger/wrist drop. 

Clenching the fist➡️wrist flexion seen on both supination and pronation- Radial nerve palsy.  

In a central wrist drop, clenching the fist leads extension at the wrist.



Dr. Boby Varkey Maramattom @bobvarkey



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