Short term results of the Mobility Total Ankle System: Clinical and radiographic outcome

• Short term clinical and radiological outcomes of the Mobility prosthesis were analyzed.
• Both prosthesis alignment and clinical outcome were satisfactory.
• The number of postoperative complications, reoperations and failure was relatively high.

BackgroundAnkle arthroplasty is increasingly used to reduce pain and improve or maintain joint mobility in end-stage ankle arthritis. The aim of this study was to assess the clinical and radiographic short term results of the Mobility prosthesis.MethodsComplications, secondary operations, failures and the survival rate were retrospectively examined in 67 primary Mobility total ankle arthroplasties. Prosthesis alignment was measured and patient reported outcomes were assessed with the use of questionnaires.ResultsThere were two intraoperative and 13 postoperative complications, requiring seven reoperations. Failure occurred in three cases, with a survival of 95% after 61 months. Clinical scores improved after surgery and alignment was correct in 93% of the tibial and 93% of the talar components.ConclusionDespite few intraoperative complications and satisfactory clinical and radiological outcome, the incidence of postoperative complications, reoperations and failure indicate the importance of further development and research in the field of ankle arthroplasty.