Spasticity
Spasticity is a common post-stroke condition that causes stiff or rigid muscles. It occurs when a muscle involuntarily contracts when you move and commonly affects the elbow, wrist and ankle. When a muscle can’t complete its full range of motion, the surrounding tendons and soft tissue can become tight.
This makes stretching the muscle much more difficult. If left untreated, spasticity can also lead to joints in the arm and leg to be stuck or frozen in an abnormal and possibly painful position. This is called contracture.