Hand Dexterity Impairment in Patients with Cervical Myelopathy: A New Quantitative Assessment Using a Natural Prehension Movement

Figure 1

Experimental setup and prehension task. (a) Top view of the experimental setup. (b) Grip force during holding the object. The object had a force measurement system, which could measure perpendicular force to each side exerted to each side by the thumb or index finger. (c) Prehension task included three movement components: (1) reaching, (2) grasping, and (3) lifting.

(a)

(b)

(c)