A substantial percentage of patients who receive opioid medications before undergoing arthroplasty continue to take them up to 6 months after surgery, according to a study published in Pain.
Researchers analyzed opioid use in 574 patients who underwent arthroplasty. Patients were followed up at 1, 3, and 6 months after surgery to assess rates of long-term opioid use and risk factors for long-term opioid use. About 30% of patients were taking opioids prior to their joint replacement surgery. Of this group, 53% of knee-replacement patients and 35% of hip replacement patients continued taking opioids 6 months after surgery.
Patients who were not taking opioids prior to surgery were less likely to report persistent opioid use. About 8% in the knee replacement group and 4% in the hip replacement group were still taking opioids at the 6-month follow-up. Patients who were taking the highest doses of opioids before surgery were most likely to continue to take them for 6 months.
Among patients not previously taking opioids, those with higher pain scores the day of surgery were more likely to report persistent opioid use at 6 months. However, improvement in knee or hip pain after arthroplasty did not reduce the likelihood of long-term opioid use.