| Popis: |
Total ankle arthroplasty implantation fixation methods have evolved over the past several decades. Early-design prostheses were implanted with cement or polymethylmethacrylate (PMMA). Historically, these cemented prostheses failed to provide long-term stabilization of the implants. As total ankle arthroplasty resurged, newer design features included press-fit components, with hydroxyapatite or titanium plasma spray at the prosthesis-bone interface. These improvements, along with redesigned prostheses and instrumentation techniques, have yielded improved longevity of ankle arthroplasties. As an adjunct, biocementation has been studied as a hybrid, allowing for immediate fixation of the prosthesis at the time of surgery, with eventual bone substitution and thus continued long-term fixation. Furthermore, tissue engineering holds promise to enhance the biology of the biocement with the addition of growth factors. |
