the aim of the study is comparing the effects of LLLT and PEMFT on range of motion of elbow and radioulnar joint ,pain ,muscles strength of upper limb and hand function in children with post-operative type II and III supracondylar humeral fracture.

intervention study describe the effects of low level laser and pulsed electromagnetic field in children with supracondylar humeral fracture . All children will be randomly classified by envelope method into two study groups of equal number. study group A and study group B. Both groups will receive designed physical therapy program, 20 minutes, 3 times per week for six weeks in addition to study group A will receive LLLT, 5 minutes and study group B will receive the same physical therapy program, in addition to PEMF, 20 minutes.

Inclusion Criteria:

1. Age ranges from 6 to 10 years of both genders.

2. All subjects have unilateral extension type II and III supracondylar humeral fracture requiring closed reduction and percutaneous pinning (CRPP).

3. The study will be start immediately after removal the splint.

4. Children clinically and medically stable.

5. Children able to follow verbal commands.

6. Children sample will represent those children who enrolled in schools and other not yet.

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Exclusion Criteria:

The patients will be excluded if they have one of the following criteria;

1. Previous soft tissue injury at the same affected side of fracture.

2. Presence of associated fractures on the ipsilateral or contralateral upper limb.

3. Active infection near the fracture site.

4. Children with congenital or acquired skeletal deformities in the upper limbs.

5. Children with neurological deficits such as convulsions, involuntary movements, receiving muscle relaxants.

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