Both Ultrasound guided Adductor Canal Block ( ACB) and Femoral Nerve Block (FNB) has been used to provide postoperative analgesia for knee surgeries. To the investigators' knowledge, no comparison has been made between those blocks in relation to postoperative quadriceps muscle strength, or duration and quality of postoperative analgesia for arthroscopic ACL reconstruction in pediatrics. If ACB provides postoperative analgesia after arthroscopic knee surgery comparable to FNB, it has the potential to improve the postoperative outcome as it will lead to less quadriceps muscle weakness and early mobilization, both of which are very important in the early postoperative period.
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Quadriceps Muscle Strength in Kilogram-force (Kgf)
Timeframe: 4 hours following peripheral nerve block performance
Post-operative Pain Scores Using the Numeric Pain Scoring System (NS)
Timeframe: 4 hours and 24 hours
Total Opioid Consumption at 24 Hours Post-block
Timeframe: 24 hours following peripheral nerve block performance.