Inclusion Criteria:  Child aged 6 to 12. Able to understand and express themselves. Intended for orthopedic surgery of the upper limb involving the hand, wrist, forearm or elbow. ASA class 1-2. Patient who has given free and informed consent. Parent present having given their free and informed consent. Affiliated patient or beneficiary of a social security scheme  Exclusion Criteria:  Refusal of the child and / or parent to participate in the study. Immediate vital emergency. Duration of planned surgery> 1h30. History of allergy to LA. Contraindication to carrying out ALR (local infection, pathology contraindicating ALR, preoperative neurological deficit). Refusal by the surgeon. Child already sedated or premedicated in the emergency room. Digital tablet not available. Patient participating in another clinical study.