Teaching video NeuroImage: the "Fonzarelli" sign: focal thumb dystonia as an early manifestation of Parkinson disease.
Turner
Martin R
MR
Department of Neurology, West Wing Level 3, John Radcliffe Hospital, Oxford OX3 9DU, UK. turnermr@doctors.org.uk
Matthews
Lucy
L
Ebers
George C
GC
D000368:Aged; D004421:Dystonia / Q000503:physiopathology*; D006801:Humans; D008297:Male; D010300:Parkinson Disease / Q000503:physiopathology*; D013933:Thumb / Q000503:physiopathology*