 Rhizotomy is usually performed on the pediatric spastic cerebral palsy population between the ages of 2 and 6, since this is the age range where orthopedic deformities from spasticity have not yet occurred, or are minimal.It is also variously claimed by clinicians that another advantage of doing the surgery so young is that it is inherently easier for these extremely young children to restrengthen their muscles and to re-learn how to walk, often having the effect that later in life, they do not even remember the period of time when they lived with the spasticity at all.However, recent cases of successful SDR procedures among those with spastic diplegia across all major age ranges (years 3-40 and even above) has finally proven its universal effectiveness and safety regardless of the age of the spastic diplegic patient.