In each group the pain management was standardised: in the post anaesthesia care unit (PACU) the patients received 1g of acetaminophen and 550mg of naproxen (NSAID) as well as 20 mg omeprazole given orally. This treatment was continued in the orthopaedic ward, every 6 hours for acetaminophen, 12 hours for naproxen and every day for omeprazole. If the pain score reached 3/10, rescue medication was given: 10 mg of oral morphine sulphate, available every 6 hours. Upon discharge, the patient was given a prescription with these same medications for two days and clear instructions on the use of rescue opioids.