• Spinal alignment and range of motion measure scale (SAROMM): is a measure of spinal alignment and range of motion using standard physical therapy techniques scored on a 5-point ordinal score of 0 (normal alignment and range with active correction) to4 ("severe" fixed deformity) (Bartlett ey al., 2005)
• Modified Ashworth scale (MAS): is a measure of muscle motion and scoring the perceived resistance to movement on a scale of 1 (no increase in tone) to 5 (rigid in flexion or extension) (Clopton et al., 2005).
• Early clinical assessment of balance (ECAB) scale: Is a 13-item test that estimates postural stability for children with CP across all levels of functional ability (Jeffries etal., 2016).
• Functional strength assessment scale: Therapists completed a functional strength assessment (FSA) to obtain an estimate of strength for major muscle groups including the neck and trunk flexors and extensors, and hip extensors, knee extensors, and shoulder flexors bilaterally.

the aim of the study is to investigate the predicted cause if the range of motion abnormalities measured by (spinal alignment and range of motion assessment scale ) and balance abnormalities ( measured by early clinical assessment of balance scale )in children with cerebral palsy like muscle strength (measured by functional muscle strength scale) and muscle tone changes (measured by modified athwart scale)