Comparison of Levobupivacaine with Ropivacaine in adductor canal block for post operative analgesia in arthroscopic anterior cruciate ligament reconstruction ; a prospective,randomised double blind study

Local anaesthetics agents are selected for peripheral nerve block for prolonged post operative pain relief with minimum motor blockade. Therefore we wish to conduct this randomized prospective trail to compare effectiveness,duration,and quality of sensory block of levobupivacaine and ropivacaine in appropriate concentrations for post operative analgesia when used for adductor canal block ,performed with ultrasound guidance in patients undergoing arthroscopic anterior cruciate ligament reconstruction surgery.