Botulinum neurotoxin type A (BoNT-A) intervention to control the hypertonia of muscles is one of the evidence-based managements for children with spastic cerebral palsy. However, BoNT-A injection in animal models to induce weakness had revealed some detrimental effects on muscular and skeletal systems. There are some objectives of this research. The first aim is to establish the baseline data of deficiencies in bone condition and muscle mass for individuals with cerebral palsy. To confirm the influences of intramuscular administration of Botox on muscular and bony health in this population is the other aim.

Individuals with cerebral palsy is vulnerable to osteopenia and sarcopenia. Botulinum neurotoxin type A (BoNT-A) intervention to control the hypertonia of muscles is one of the evidence-based managements for children with spastic cerebral palsy. However, BoNT-A injection in animal models to induce weakness had revealed some detrimental effects on muscular and skeletal systems. There are some objectives of this research. The first aim is to establish the baseline data of deficiencies in bone condition and muscle mass for individuals with cerebral palsy. To confirm the influences of intramuscular administration of Botox on muscular and bony health in this population is the other aim.

Inclusion Criteria:

1. diagnosis of spastic CP (cerebral palsy)
2. moderate to severe spasticity over the limbs, Modified Ashworth Scale score≧2

Exclusion Criteria:

1. fixed contractures of the limbs
2. previous musculoskeletal surgery on the limbs
3. contraindications to botulinum toxin intervention

cerebral palsy is vulnerable for osteopenia and sarcopenia