INTRODUCTION:intra-articular fractures of the lower limb are one of the most common fractures associated with knee stiffness. Even after an adequate and rigid fracture fixation early rehabilitation is necessary to drastically improve the outcome and reduce stiffness. Lack of effective pain control postoperatively can significantly reduce participation in therapy regimens and thus contribute to reaccumulation of fibrotic tissue in the joint after artholysis. Hence, epidural anaesthesia through a lumbar epidural catheter is an established procedure to reduce post operative pain. 1 gm preservative free morphine and 2ml of 0.5 % Bupivacaine diluted with normal saline to make a total of 10 ml is the most commonly used protocol in top up after surgery for post operative analgesia.