A state of increased tone of a muscle (and an increase in the deep tendon reflexes). For example, with spasticity of the legs (spastic paraplegia) there is an increase in tone of the leg muscles so they feel tight and rigid and the knee jerk reflex is exaggerated.
a velocity-dependent increase in muscle resistance to passive movement accompanied by increase stretch reflexes and clonus (intermittent muscular contractions). Spasticity is due to uninhibited activity in spinal circuits and is not the same thing as hypertonicity (excessive tone in muscular structure).
Increased muscle tone - tightness or stiff muscles, usually around a joint. - Increased resistance to movement. It refers to the stiffness that can occur in a limb, usually in the leg. Spasticity often accompanies weakness, but it is possible to have spasticity without weakness and to have weakness without spasticity.
A motor disorder characterized by tight or stiff muscles that may interfere with voluntary muscle movements and is a problem for many patients with multiple sclerosis (MS), spinal cord injury (SCI), cerebral palsy (CP), and acquired brain injury (ABI).
An involuntary increase in muscle tone (tension) that occurs following injury to the brain or spinal cord, causing the muscles to resist being moved. Characteristics may include increase in deep tendon reflexes, resistance to passive stretch, clasp knife phenomenon, and clonus.
Hyperactive muscles that move or jerk involuntarily. There are some benefits to spasticity: Warning mechanism to identify pain or problems in areas of no sensation. Helps in spotting an oncoming urinary tract infection. Helps to maintain muscle size and bone strength. Helps to maintain circulation. Helps to prevent osteoporosis.
The increased stiffness or 'muscle tone' experience by children with cerebral palsy. Muscle spasm can often be felt when such a child's limbs are moved. The limbs are hard to bend or straighten because of the spasticity of the muscles. The doctor usually finds increased tendon jerks in a child with spasticity.
an abnormal increase in muscle tone that may be caused by certain types of damage to the nerve pathways regulating muscles. Spasticity can lead to incoordination, loss of function, pain and permanent muscle shortening, or contracture.
Increased resistance to muscle stretching and loss of normal elasticity of leg and/or arm muscles resulting from CNS disease process. Often manifested by muscle stiffness, which can result in difficulty with movements of the extremities. Steroids (See Cortisone).
Resistance to the passive movement of a limb that is maximal at the beginning of the movement and gives way as more pressure is applied. Spasticity is usually accompanied by weakness in the affected limb.
Increased muscle tone (hypertonic), involuntary resistance of weak muscle caused by passive range of motion followed by sudden relaxation of muscle, associated with exaggeration of reflexes. Causes stiffness, awkward movements, and loss of voluntary muscle control.
Spasticity is a disorder of the body's motor system in which certain muscles are continuously contracted. This contraction causes stiffness or tightness of the muscles and may interfere with gait, movement, and speech. The person with the spastic muscles may or may not feel it, know about it or want to do something about it.