Any injury or illness that affects the spinal cord can cause spasticity, an increase in muscle stiffness that can lead to immobility. Bobby Brunner, MD, a physiatrist, discusses some common disorders that result in spasticity and the wide spectrum of its severity. He walks us through the considerations a physiatrist would make in determining how to address spasticity. Dr. Brunner discusses a progression of treatment options for spasticity: physical therapy, injection therapies, pump system implantation, and surgery.