A systematic review of outcomes of total ankle arthroplasty with INBONE II

Background: This study systematically reviews the literature and reports on outcomes of total ankle arthroplasty (TAA) with the INBONE II fixed-bearing implant.

Methods: PubMed, SCOPUS and CINAHL were searched for clinical studies reporting INBONE II specific outcomes from database inception through July 13th, 2024, according to the Preferred Reporting Items for Systematic Review and Meta-analyses (PRISMA) guidelines.

Results: Seven primary TAA studies and 4 revision TAA studies were included with 406 and 114 patients respectively. Survivorship was 96.5 % (mean follow-up 44.8 months) and 93.9 % (mean follow-up=37.3 months) for primary and revision TAA, respectively. The mean reoperation rate was 11.4 % with a 3.2 % rate of major complications for primary TAA. Meanwhile, the reoperation rate was 9.1 % with a major complication rate of 12.2 % for revision TAA.

Conclusions: Primary and revision TAA with this implant results in over 93 % survival at mid-term follow-up with an acceptable complication rate, supporting its continued use.

Level of evidence: Level IV: Systematic Review of Level I-IV Studies.