The study is aimed to determine which of the two methods , either the fascia iliaca block or the caudal block is better in managing the post operative pain and by which decreasing the consumption of analgesic drugs post operatively and making the patient more comfortable.

Split-thickness skin grafting is the current standard of care for the reconstructive procedures in managing burn injuries and traumatic tissue defects. Harvesting split-thickness skin creates a new partial thickness wound that is referred to as the donor site.(1) Donor site pain is one of the most distressing symptoms reported by patients in the early postoperative period.4,5 Larger donor sites stimulate a greater number of pain receptors and consequently pain is proportional to the size of the graft harvested.6 Often, the donor site is reported to be more painful than the recipient site,7 affecting early mobilization, sleep, and need for analgesics postoperatively.(1) Most commonly split thickness auto-grafts are harvested from a convenient and minimally aesthetically intrusive site; often the lateral thigh area, which is innervated by lateral femoral cutaneous nerve (LFCN). However if a larger graft area in needed then it will be obtained from the anterior aspect of the thigh, which is innervated by the femoral nerve.(2) Regional nerve blockade has been proposed for skin graft harvest and proofed to provide better and longer standing analgesia.(2) Application of fascia iliaca compartment block involves the distribution of anesthesia to the territories of the femoral and lateral cutaneous nerves(3) American society of regional anesthesia and pain medicine recommendations on local anesthetics in pediatric regional anesthesia in 2018 stated that the ultrasound guided fascial plane blocks as fascia iliaca block can be successfully and safely performed using a recommended dose of 0.25-0.75 mg/kg of bupivacaine 0.25%.(4) Prolongation of analgesia after any surgery is the goal of any phsyician ,and Fascia Iliaca Block (FIB), which is widely used for postoperative analgesia in many surgeries, is a nerve block technique with proven efficacy. but which has the superior effect of numbing the pain ..Is it the fascia iliaca erve block or the caudal block .

The objective of this study is to compare post operative analgesic effect and safety of fascia iliaca nerve block versus caudal block in pediatric patient undergoing a graft surgery .

Inclusion Criteria:

• Age 2- 12 years. ASA I - II Scheduled for split thickness grafting. Availability and suitability of lateral and anterior aspects of the thigh as a donor site.

Exclusion Criteria:

• Patient's gaurdian refusal to participate in the study. Known allergy to local anesthetics Coagulopathy. Patient with motor or sensory deficits in lower extremities. Prior surgery of the inguinal or suprainguinal area . Children who are morbidly obese (BMI≥30) because ultrasound guided regional anesthesia could be too technically difficult.

Patients and anesthesiologist won't know which group is patients will selected