The Agility Total Ankle Prosthesis; ..
bearing, third generation total ankle prosthesis
For a long time a change of approach—removal of the implant components followed by arthrodesis—was the standard procedure in cases of ankle replacement failure. The current literature describes various surgical techniques and fixation methods for such arthrodesis after prosthesis removal: bone allografts, autografts, or replacement materials (e.g. porous metals such as Trabecular Metal™) can be used to bridge the defect (, , –). The alternative to converting to ankle arthrodesis is revision ankle arthroplasty (, , , –). If possible, an implant type for which special revision components are available, e.g. a thicker metal plate for tibial components and larger weightbearing area and improved fixation for talar components, should be used. Revision surgery can be performed as one-stage or two-stage procedure. In the two-stage procedure, the goal of the first surgery is to address the bone defect. After bone integration of the autograft is achieved, the revision components can be implanted in a second surgery (eFigure 2).
the Salto Talaris Total Ankle Prosthesis ..
There is no gold standard treatment for advanced ankle osteoarthritis. Both, ankle arthrodesis and total ankle replacement are important treatment options in patients with end-stage ankle osteoarthritis. Attaining satisfactory intermediate-term and long-term postoperative outcomes in patients who have undergone total ankle replacement requires thorough preoperative examination and planning, taking careful account of all relative and absolute contraindications, with corresponding patient selection. If modern ankle implant designs are used, 10-year success rates of between 70 and 90% can be achieved.
Midterm results of the salto total ankle prosthesis.
This review article uses the current literature to explain the indications and the absolute and relative contraindications for total ankle replacement. It also presents the results of current clinical studies on postoperative functional outcomes and the probability of success of ankle replacement surgery.