We examined digit force direction during a static grip using multiaxial load cells. Clinical status was examined using Fugl-Myer, box and block test, and Chedoke-McMaster. 

Findings and Publication

Stroke survivors are unable to produce a gripping force perpendicular to the surface being gripped which is the most efficient way to hold an object. Stroke survivors tend to produce more shear forces while gripping that reduces the efficacy of their gripping. Stroke survivors with poor clinical picture as measured by various functional measures tend to do poorly in their gripping biomechanics. More details here.