Erector Spinae Plane Block v.s Patient Controlled Analgesia in Correction Surgery for Idiopathic Scoliosis

Participants will receive ultrasound-guided ESPB preoperatively, using 40 ml of 0.3% ropivacaine.

Participants will receive postoperative PCA with a formulation of 200 µg sufentanil diluted to 100 ml. The PCA settings will include a background dose of 3 ml/hour, a lockout time of 15 minutes, and a bolus dose of 2 ml.