Two groups of patients between 40 and 60 yrs who are undergoing open wedge high tibeal osteotomy Group 1 will receive IPACK block with 15 ml Bupivacaine, immediately before spinal anaesthesia .~Group 2 will receive adductor canal block ,also with 15 ml Bupivacaine. before spinal anaesthesia. register the time of first pain sensation and firs IV analgesic dose required in each group
A comparison between IPACK block and adductor canal block in post operative pain management