This group of patients will receive IPACK block immediately before spinal anaesthesia then follow up for 24 hrs to register first pain sensation and analgesic requirements

This group of patients will receive adductor canal block immediately before spinal anaesthesia then follow up for 24 hrs to register first pain sensation and analgesic requirements

Adductor canal block (ACB) is a popular peripheral nerve block that has been shown to decrease pain significantly and thereby opioid consumption with minimal effect on quadriceps function [8]. Though ACB provides analgesia to the peripatellar and intra-articular aspect of knee joint, it does not relieve posterior knee pain which is moderate to severe in intensity [9, 10]. The recent technique of an ultrasound (US)-guided local anesthetic infiltration of the interspace between popliteal artery and the capsule of posterior knee (IPACK) has shown to provide significant posterior knee analgesia without affecting the common peroneal nerve (CPN) [11]. We postulated that IPACK will provide better pain relief and improve knee function in the immediate postoperative period compared to ACB

If intervention which is adductor canal block or lPACK block is effective in postoperative pain control that can decrease the lV analgesic agents