Spasticity is a motor disorder characterized by velocity-dependent increases in muscle tone, resulting in involuntary muscle contractions, stiffness, and spasms. After a spinal cord injury, the normal communication pathway between the brain and muscles below the injury level is disrupted. Without proper signals from the brain to regulate muscle activity, the spinal cord's reflex circuits become hyperactive, leading to exaggerated muscle responses to stimuli. This neurological complication typically develops within the first few weeks to months after injury, though it can emerge years later.
The severity of spasticity varies widely among spinal cord injury patients. Some experience mild muscle tightness that causes minor discomfort, while others suffer from severe, painful spasms that interfere with sleep, mobility, positioning, and basic self-care activities. Spasticity can affect any muscle group below the level of injury, but commonly impacts the legs, hips, back, and arms. The condition often worsens with certain triggers, including bladder or bowel distension, pressure sores, infections, tight clothing, temperature extremes, and emotional stress.
Medical professionals assess spasticity using standardized scales such as the Modified Ashworth Scale and the Spasm Frequency Scale. These evaluations help determine the appropriate treatment approach and document the severity of the condition for legal claims. Understanding the medical aspects of spasticity is essential when pursuing compensation, as it directly impacts the calculation of damages for ongoing medical care, quality of life losses, and future treatment needs.