Rigidity: Spasticity is the a hyperactive hand or arm when their is decreased ability to control the movement of the extremity and rigidity is a situation where the patient moves in a very stiff and robotic fashion. There is not a natural flow to the muscular movement.
Answered 7/6/2018
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Different origin: Spasticity is an increased resistance to the passive movement of a joint due to abnormally high muscle tone, and varies with the amplitude and speed of the joint motion. Seen after a stroke. Rigidity is an increased resistance to the passive movement of a joint which is constant throughout the range of joint motion, and not related to the speed of joint movement. Seen in Parkinson's disease.
Answered 7/6/2018
3.9k views
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