Dexamethasone Versus Dexmedetomidine in IPACK Block to Reduce Pain Post Arthroscopic Knee Surgeries

Blocks will be carried out with the patient supine with the operative leg externally rotated and slightly flexed at the knee or in prone position.with Ultrasound device with a high-frequency (6-13 MHz) linear probe using in plane lateral to medial approach and this will be done by a senior staff anaesthesia physician skilled in ultrasound guided regional anaesthesia.

patients will be put in supine position, the procedure will be performed under complete aseptic precautions and All patients will be divided into three groups:(Group 1) for iPACK block with 0.25% bupivacaine only. (Group 2) for iPACK block with 0.25% bupivacaine and dexamthasone and (Group 3) for iPACK block with 0.25% bupivacaine and dexmedetomidine .