Inbone II yielded good short-term survival in revision total ankle arthroplasty
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Published results showed the Inbone II Total Ankle System had good short-term survival and improvements in postoperative scores at 2 years in revision total ankle arthroplasty procedures.
“Revision [total ankle arthroplasty] TAA remains a relatively uncommon procedure, and we believe that our favorable results support its potential as a viable salvage option, best performed by experienced surgeons in high-volume centers,” the authors wrote. “Naturally, there is a clear need for further revision TAA-related studies that include larger patient populations, prospective study designs and longer follow-up.”
Researchers retrospectively reviewed demographic, radiographic and patient-reported outcome measure data among 28 patients who underwent 29 revision TAAs using the Inbone II Total Ankle System (Wright Medical Technology/Stryker).
Results showed a mean duration from primary to revision TAA of 87.5 months, with 83% of patients undergoing revision for aseptic loosening after primary TAA. Researchers found 76% of ankles required additional procedures. Patients had an infection rate of 7%, a reoperation rate of 7% and an implant survival rate of 97% at a mean follow-up of 40 months, according to results.
Researchers observed a significant postoperative improvement in the radiographic component alignment measures, as well as a significant improvement in the Manchester-Oxford Foot Questionnaire in all domains and the EuroQol-5D in three domains at 24 months postoperatively. Results showed rates of subsidence, loosening and heterotopic ossification were comparable between this study and other reports. Researchers also found the rates of subsidence, loosening and heterotopic ossification did not influence the clinical outcomes.
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