The aim was to evaluate the effect of using IASTM on passive ROM of the lower limbs and joint angles during gait in children with spastic diplegic CP. Methods: Thirty children with diplegic CP were randomly divided into 2 groups: a control group (which received a selected physical therapy program) and the study group (which received IASTM therapy in addition to the selected physical therapy program). They were treated three times weekly for six weeks. Passive ROM and active ROM during gait were assessed using a digital goniometer and Kinovea analysis software, respectively, before and after the proposed treatment period.

Methods: Thirty children with diplegic CP were randomly divided into 2 groups: a control group (which received a selected physical therapy program) and the study group (which received IASTM therapy in addition to the selected physical therapy program). They were treated three times weekly for six weeks. Passive ROM and active ROM during gait were assessed using a digital goniometer and Kinovea analysis software, respectively, before and after the proposed treatment period.

Inclusion Criteria:

• Children aged from 5 to 8 years old.
• spasticity ranged from 1 to 1+, according to Modified Ashworth Scale
• Children at level II according to Gross Motor Function Classification System
• They achieved independent walking with or without assistive device
• able to follow instructions and understand commands.

Exclusion criteria:

• Fixed muscle contractures or fixed bone deformities in the lower limb.
• Botox injection for the last six months.
• Orthopedic surgeries for the last year.
• Children with infectious diseases.
• Skin infection, seizures, and any lower limb soft tissue injury.