Many take opioids months after hip, knee replacements
The findings are important because joint replacement surgery is increasingly common and there are sharply rising rates of opioid overdoses in the United States. Common prescription opioid painkillers include drugs such as OxyContin, Vicodin and Percocet.
In fact, an autopsy report released Thursday showed that music legend Prince died in April after taking fentanyl, a powerful synthetic opioid painkiller. The artist was said to have suffered from severe hip pain after years of performing intense acrobatics during his shows.
For the new study, researchers looked at 574 patients undergoing knee or hip replacement surgery. About 30 percent of the patients were taking potentially addictive opioid painkillers before their surgery. Among this group, 53 percent of knee patients and 35 percent of hip patients were still taking the narcotics six months after their surgery.
The investigators also found that among patients who did not take opioids prior to having surgery, 8 percent of knee patients and 4 percent of hip patients were still taking the painkillers six months after receiving their joint replacement.
The strongest predictor of long-term opioid use among the study participants was taking high doses of the drugs before joint replacement surgery, the study authors said.
The results suggest that some patients continue to use opioids despite improvements in their hip or knee pain.
Also, some patients who did not use opioids before joint replacement will become chronic users after the surgery. And continued narcotic painkiller use after joint replacement surgery is more common than previously believed, said researcher Jenna Goesling, from the University of Michigan in Ann Arbor. ■
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