the purpose of this study is to compare between the effect of pulsed magnetic field versus low level laser therapy on functional performance in children with juvenile idiopathic arthritis

This study directed to investigate effect of pulsed magnetic field versus low level laser therapy on functional performance in children with juvenile idiopathic arthritis children with juvenile idiopathic arthritis suffer from some problems such as pain, swelling and limited motion in knee joints here in this study i used these devices to help in solving these problems pain was measured by visual analogue scale swelling was measured by tape measurement and Range of motion was measured by digital geniometre

Inclusion Criteria:

• 1 Confirmed diagnosis of Juvenile Idiopathic Arthritis (JIA).
• 2 Polyarticular onset of JIA with bilateral involvement of the knee joint.
• 3 Age between 8 and 16 years
• 4 Stable conditions (i.e., receive stable doses of medications in the past three months).
• 5 Not participating in a regular exercise program in the past six months.

Exclusion Criteria:

• 1 Fixed deformities
• 2 History of joint surgery
• 3 Ankylosing or fractures
• 4 Bone destruction ( erosive changes of the knee joints ).