Reverse THA may be safe, effective in the treatment of end-stage OA
Use of a reverse total hip system may be safe and effective for treatment of end-stage osteoarthritis and provide excellent fixation with low risk of aseptic loosening, according to results.
“[The reverse total hip system] has the potential to become a major player in terms of addressing stability, especially in complex scenarios,” Thomas Turgeon, MD, director of arthroplasty research at the University of Manitoba, told Healio of results presented at the Canadian Orthopaedic Association Annual Meeting. “Ten to 15 years from now we may say that we cannot envision a time where we did not have reverse total hip replacements. Sometimes we cannot see exactly how things are going to evolve over time, but I think this is an exciting opportunity and exciting technology to be able to move forward with.”
Turgeon and colleagues evaluated implant fixation using model-based radiostereometric analysis among 22 patients with end-stage OA who underwent total hip arthroplasty with the Reverse Hip Replacement System (Hip Innovation Technology LLC). Researchers inserted radiostereometric analysis markers into the innominate bone and proximal femur and performed imaging assessments at baseline and 6-, 12- and 24-month follow-up.
“The radiostereometric analysis allows us to assess with a high degree of accuracy the degree of migration or movement of the implants within the bone,” Turgeon said.
Researchers also performed clinical assessment using WOMAC scores, Harris Hip Score, Oxford-12 scores, hip disability and osteoarthritis outcome score, SF-36 and EuroQol-5D scores out to 24-month follow-up.
Turgeon noted both the acetabular component and the femoral component of the Reverse Total Hip System appeared to have solid fixation to the bone with no reports of migration despite the altered mechanics of the implant. He added all clinical metrics were consistent with those of well-functioning total hip replacement implants.
“[The Reverse Hip Replacement System] appears to be performing well as a hip replacement and there does not appear to be any concern about increased risk for aseptic loosening with the different mechanics of this device vs. a traditional total hip replacement,” Turgeon said.
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Turgeon T, et al. Radiostereometric analysis and clinical outcomes of a novel reverse total hip system at 2 years. Presented at: Canadian Orthopaedic Association Annual Meeting; June 8-11, 2022; Quebec City, Quebec, Canada (hybrid meeting).
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