Abstract

Flexor digitorum superficialis absence in the small finger: a tip on screening

Author(s): Mr Lyndon Mason,Mr Lyndon Mason

We describe a screening tip for assessing the absence of flexor digitorum superficialis (FDS) in the little finger. By allowing an individual to count on their fingers, by sequentially extending their fingers from a clenched fist starting with the thumb and ending with their small finger, an absent FDS in the small finger will result in them skipping the ring finger and extending their little finger first. This is due to the quadriga effect.