Methotrexate and post operative complications in patients with rheumatoid arthritis undergoing elective orthopaedic surgery--a ten year follow-up.

In the 1990's there were concerns that methotrexate might increase the risk of post operative complications following elective orthopaedic surgery; as a result many Units initiated policies to discontinue methotrexate prior to elective orthopaedic surgery. In 2001 we carried out a controlled study of complications after elective surgery in rheumatoid arthritis (RA) patients who either continued or discontinued methotrexate prior to surgery. In this study we showed that continuation of methotrexate therapy prior to orthopaedic surgery did not increase the risk of infection or surgical complication occurring in patients with RA within one year of surgery. The limitation of this study was that complications later than one year were not studied. Sixty-five patients have been followed up. Thirty-one were fully assessed in clinic and 34 underwent a structured telephone interview. There were no incidences of deep bone infection in any patient group so that there is no evidence that continued methotrexate therapy in the perioperative period increases the risk of late deep infections. We adhere to our original advice that in the absence of renal failure or sepsis, methotrexate therapy should not be stopped before elective orthopaedic surgery in patients with RA whose disease is controlled by the drug before surgery.