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What is a condition of abnormal muscle tone that causes the impairment of voluntary movement?


Spasticity is a condition in which there is an abnormal increase in muscle tone or stiffness of muscle, which might interfere with movement, speech, or be associated with discomfort or pain. Spasticity is usually caused by damage to nerve pathways within the brain or spinal cord that control muscle movement.

What are the forms of abnormal muscle tone?

  • •Resistance force to passive movement •Abnormal muscle tone presents in many different forms. –Rigidity –Dystonia –Spasticity –Hypertonia Abnormal Muscle Tone 6 Rigidity •Parkinson’s Disease –Stiffness or heaviness •Lead pipe •Cog wheel Rigidity

What is the impact of neurological impairment on muscle tone?

  • •Impact of Neurological Impairment –Abnormal Muscle Tone •MyoSense –Development –Bench Testing –Clinical Evaluation Outline 4 •High incidence of neurological disorders –Abnormal muscle tone –Reduced independence

What movements are slowed in the buildup and relaxation of force?

  • Intentional movements, such as grasping or pointing, may be slowed in both the buildup and the relaxation of force. Consequently, the movement of an affected limb is delayed and slowed.

What is muscle tone and how is it maintained?

  • Muscle tone refers to the ease with which a muscle may be lengthened by passive stretch. The normal cerebellum contributes to the maintenance of muscle tone through facilitatory influences on skeletal muscle stretch reflexes.