Does Saphenous Nerve Block in Hamstring Anterior Cruciate Ligament Reconstruction Affect Postoperative Pain? A Randomised Controlled Trial

INTERVENTION: Saphenous nerve block for patients undergoing ACL reconstruction with hamstring autograft. This involves 15cc 0.5% Ropivacaine (75mg) with an ultrasound guided approach picking a spot 10 cm above the patella, after general anaesthesia. Both groups will receive multimodal analgesia. This includes IV paracetamol 1g 20min before the end of the case, and Parecoxib 40mg IV during the case. Surgeons will infiltrate hamstring site and knee joint with Ropivacaine 2mg/kg and 10mg of Morphine into the knee joint (intra‐articular). CONDITION: ACL reconstruction PRIMARY OUTCOME: Post‐operative pain assessed using a visual analogue scale. SECONDARY OUTCOME: Opiate use will be measured based on anaesthetic perioperative record and medication chart. INCLUSION CRITERIA: All patients undergoing ACL reconstruction with ipsilateral hamstring autograft at our practice.