3 doctors weighed in:
What is the main difference between rigidity and spasticity?
3 doctors weighed in

Dr. Jay Rosenfeld
Physical & Rehabilitation Medicine
2 doctors agree
In brief: See below
It is mostly the quality of the movement.
With rigidity, the muscle tone stays pretty much the same when someone moves the limb, there is constant resistance to movement. It has also been called "lead pipe" rigidity. In spasticity, there is initial resistance to movement and then the resistance gives way. This is called "clasp-knife" spasticity. Rigidity is often seen in parkinsons.

In brief: See below
It is mostly the quality of the movement.
With rigidity, the muscle tone stays pretty much the same when someone moves the limb, there is constant resistance to movement. It has also been called "lead pipe" rigidity. In spasticity, there is initial resistance to movement and then the resistance gives way. This is called "clasp-knife" spasticity. Rigidity is often seen in parkinsons.
Dr. Jay Rosenfeld
Dr. Jay Rosenfeld
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