What is the definition of spastic diplegia?

Form of CP: Spasticity predominates in the legs, less severely affecting the face and arms. The most common causes are prematurity with bilateral germinal matrix hemorrhage and hydrocephalus. Babies have scissoring of the legs and marked spasticity that may preclude ambulation, if attempted without a walker and long leg braces. Intelligence and language is often unimpaired, may have variable clumsiness hands.

Spastic diplegia: Spastic diplegia is a clinical senario of severe increased tone and spasticity of both lower extremities and most common associated with cerebral palsy.