A 16-year-old male fell off the bed of a pickup truck and hit his forehead on the road.He now has resistance to passive movement that varies proportionally with the force applied.He is most likely suffering from:

Question

Quizplus · Accepted Answer

Gegenhalten is manifested by resistance to passive movement that varies in direct proportion to force applied.
Spasticity is manifested by a gradual increase in tone causing increased resistance until tone suddenly reduces.
Rigidity is manifested by muscle resistance to passive movement of a rigid limb that is uniform in both flexion and extension throughout the motion.
Dystonia is manifested by sustained involuntary twisting movement.

A 16-Year-Old Male Fell Off the Bed of a Pickup