The use of narcotics has been found to be a modifiable risk factor for success of arthroplasty. We sought to determine the risk factors leading to increased narcotic use after total hip arthroplasty and total knee arthroplasty.
A retrospective chart review was performed on new patients presenting to an orthopedic reconstructive-service clinic. New patients aged 18 years or older with osteoarthritis of the hip or knee who presented over a 1-year period and underwent total knee arthroplasty or total hip arthroplasty were included. The Arkansas prescription monitoring program was then used to determine recent narcotic and benzodiazepine prescriptions filled within 3 months of surgery, and this was converted into morphine milligram equivalents (MME).
One hundred seventy-nine patients met the inclusion criteria. When compared with patients who did not take any preoperative opioids, narcotic- and tramadol-only users filled an average of 86% and 38% more MME, respectively. Benzodiazepine users required an average of 81% more MME postoperative than nonusers, and smokers required an average of 90% more MME postoperative than nonsmokers. Subjects with body mass index >40 kg/m
This study suggests that a patient's preoperative narcotic, tramadol, benzodiazepine, and tobacco use are correlated to the amount of postoperative narcotic prescriptions filled in the 3 months following surgery. Predisposition to substance abuse may be a characteristic which leads to increased postoperative narcotic use.