In this paper, kinematic characteristics of writing are compared in 5 patient with writer’s cramp who performed a set of standardized writing task. The kinematic characteristics thumb and forefinger force before and during cramp. The effect of writing on different inclined supporting surfaces is also investigated. Our results indicate that inclined surfaces aspects of writing discomfort in writer’s cramp subjects. Although the change in arm joint angles and fingers/hand pressure is not generalizable between patients, such kinematic evaluations seem to be a key factor in the outcome of any personalized treatment or rehabilitation strategy. Manuscript profile