Intermediate
Technical
In the Industry Vocabulary Test
spasticity
Pronunciation: spas-TIS-ih-tee
Velocity-dependent increase in muscle tone causing stiffness and interfering with voluntary movement.
Full Definition
Spasticity is a motor disorder characterized by increased muscle tone, hyperactive stretch reflexes, and velocity-dependent resistance to passive movement. Common in patients with stroke, spinal cord injury, multiple sclerosis, and brain injury, spasticity can significantly impact functional recovery and quality of life. Rehabilitation interventions include stretching, positioning, medications, and advanced treatments like botulinum toxin injections or intrathecal baclofen.
Usage
Usage note: Distinguished from rigidity by velocity-dependence; specify affected muscle groups and functional impact.
In Context
- "Lower extremity spasticity limits the patient's ability to achieve heel strike during gait." — Physical therapy assessment
- "Spasticity management includes daily stretching and consideration for pharmacological intervention." — Treatment plan
Also known as
muscle spasticity
hypertonicity
increased tone
Contrasted with
flaccidity
hypotonia
normal tone
Don't confuse with
rigidity
dystonia
contracture