<prompt> True about severity of affection of limbs in Spastic Diplegia of Cerebral Palsy isLower limbsUpper limpsLower limbs onlyUpper limbs onlyOne upper limb and one lower limb  <response>: In spastic diplegia of cerebral palsy it affects lower limbs more than upper limbs , comprising approximately 80 percent of all cases. Spastic CP typically involves increased muscle tone and difficult or unusual movements. Spastic diplegia or diparesis is a subtype of spastic cerebral palsy in which the legs are the most affected limbs. People with spastic diplegia often have a scissor walk, characterized by the knees turning inwardcrossing. This is due to tightness in the hip and leg muscles. In some cases, the arms may also be affected, although usually to a lesser degree . Reference: GHAI Essential pediatrics, 8th edition 