The use of a polyvinyl alcohol hydrogel synthetic cartilage implant hemiarthroplasty for osteoarthritis of the first metatarsophalangeal joint has increased since publication of the results of a pivotal, prospective, randomized, multicenter, noninferiority, clinical trial performed in the United Kingdom and Canada. The synthetic cartilage implant was awarded FDA approval in July 2016, permitting its commercial distribution in the United States, which has led to a notable escalation in its use. Concomitant failures in a small proportion of these patients will require conversion to arthrodesis. This study describes the surgical technique used to convert synthetic cartilage implant hemiarthroplasty of the first metatarsophalangeal joint to arthrodesis and the 3 cases that underwent revision at a single center in the United Kingdom.
Level of Evidence: Diagnostic Level IV, case series. See Instructions for Authors for a complete description of levels of evidence.