Patients aged 65 years or younger had THA revision rates of 1% in registry data
LAS VEGAS — Research presented here identified a low revision rate for younger patients who underwent total hip arthroplasty from 2012 to 2020 when articulations using highly crosslinked polyethylene were starting to be used more widely.
In the study, which was presented at the American Academy of Orthopaedic Surgeons Annual Meeting, Ran Schwarzkopf, MD, and colleagues, retrospectively studied information for 5,153 patients aged 18 to 65 years with data in the American Joint Replacement Registry (AJRR) who underwent THA from 2012 to 2020. Patients with previous revisions or oncologic etiology, patients who were readmitted within 90 days and patients undergoing nonelective THA were excluded.
“More and more patients are having hips replacements at a younger age and living longer, typically. So not only did we want to see how they would do, but they are more active and put more demands on their hips,” Schwarzkopf told Healio in an interview.
Researchers found patients had a 1% revision rate (53 patients) and a 1.4% rate of readmission within 90 days of surgery, according to the study abstract.
The AJRR survivorship data for this cohort was Kaplan-Meier survivorship of 99% at both time points of 5 and 8 years, postoperatively.
Furthermore, rates of typical complications that are often indications for revision THA were 21% for infection, 15% for instability, 15% for periprosthetic fractures and 9% for aseptic loosening in these patients.
Discussing the value of the AJRR data now available, Schwarzkopf said, these findings are ones he shares with his patients and confirm what he and his colleagues had theorized about changes in THA technology that occurred during the 2000s.
“We started to use highly crosslinked polyethylene at our center about 20 years ago as our polyethylene for hip replacement. So, we’ve already had this material for 20 years and we don’t see that wear, those failures, that we saw in the 1980s and 1990s and later. So having more data on hips in place in really young patients, helps guide them better,” Schwarzkopf said.
In other findings from the study, Black patients had early cumulative THA revision rates that were higher than in white patients.
“I think in the future with AJRR, as it develops, we’ll have more baseline characteristics and demographics, as well as patient-reported outcomes. In the long-term, we can do this with our data, but it will never be as robust or as large as AJRR,” Schwarzkopf said.
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Cieremans DA, et al. Poster 523. Presented at: American Academy of Orthopaedic Surgeons Annual Meeting; March 7-11, 2023; Las Vegas.
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