Since the first spinal fusion by Hibbs 1911, yet anesthesia for correction of scoliosis is challenging due to frequently associated co-morbidities, the extensive nature of surgery and liability for many complications. Among the major concerns for anesthesiologists are the pain and bleeding. Scoliosis correction accounts for massive blood loss that may exceed more than half of blood volume. There are many strategies for blood conservation; however sometimes some of them may not be suitable. For analgesia, the most frequently loco regional analgesic techniques in spine surgery are intrathecal, epidural or local infiltration techniques. infiltration data reviled inconclusive and heterogeneous results. Our purpose is to optimize blood conservation and analgesia through anatomically based modification of the infiltration technique.
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Estimated blood loss
Timeframe: Intraoperative
Total Morphine consumption.
Timeframe: during first 24 hours postoperatively.