Selective serotonin reuptake inhibitor (SSRIs) use was associated with a reduced risk of revision surgery following total hip or total knee replacement surgery. These were the findings of a study presented at the 2017 Annual Meeting of the American Academy of Orthopaedic Surgeons (AAOS) in San Diego.
Among patients undergoing total hip replacement (THR) and total knee replacement (TKR) surgery, depression is common and has been associated with worse outcomes and complications. To investigate the effect of SSRIs (used in the treatment of depression) on THR and TKR outcomes, researchers at the Mayo Clinic in Rochester, Minnesota, reviewed >20,000 THR and TKR patients aged ≥18, from 2002 through 2009. Surgery complications, revisions, and associated mortality were examined, with patient medical records used to determine SSRI use.
A total of 1,290 patients (6.4%) were found to have a diagnosis of depression; SSRIs were administered in 1,563 (7.8%) surgeries. Results showed that a similar risk of prosthetic joint infection existed for both those treated with an SSRI and non-SSRI users, however, SSRIs users had significantly lower risk of revisions (HR 0.4, 95% confidence interval [CI] 0.3, 0.7) and aseptic revisions (HR 0.4, 95% CI 0.2, 0.7).
“While the potential mechanisms for this finding are currently unknown, we speculate that the lower revision risk in SSRI users may reflect a higher level of health in SSRI users, better management of depression and pain in these patients, or potential positive biologic effects of SSRIs,” said Daniel J. Berry, MD, lead author of the study.
The researchers also found that during the first year of surgery, depression was tied with a doubling of the risk of prosthetic joint infections (HR 1.9, 95% CI 1.1, 3.1). Depression was also associated with overall long-term risk of revision surgery (HR 2.2, 95% CI 1.8, 2.8), and aseptic revisions (HR 2.6, 95% CI 1.7, 3.9).
Although there is no laboratory evidence to explain how SSRIs affect orthopedic implants, the researchers concluded that continued treatment with SSRIs for THR and TKR patients does not appear to have detrimental effects on the risk of revision and related complications.
For select patients, taking medication to treat anxiety, depression before and after hip or knee replacement surgery reduces revision risk [press release]. Rosemont, IL: American Academy of Orthopaedic Surgeons. Published online March 14, 2017. Accessed March 15, 2017.
This article originally appeared on MPR