tailieunhanh - Phẫu thuật đầu gối

Tổng số đầu gối vô trùng arthroplasty Sau khi biến chứng xảy ra ít thường gặp hơn HỌ ĐÃ Một hoặc hai thập kỷ trước đây. Đây là liên quan đến các tiến bộ kỹ thuật trong tay, cải tiến thiết kế, và trao đổi trong quản lý chu phẫu. Cơ chế rối loạn chức năng duỗi là | Aseptic Complications After Total Knee Arthroplasty Jess H. Lonner MD and Paul A. Lotke MD Abstract Aseptic complications after total knee arthroplasty are occurring less frequently than they did one or two decades ago. This is related in part to technical advancements design improvements and changes in perioperative management. Extensor mechanism dysfunction is the most frequent complication and the most commonly cited reason for secondary surgery after total knee arthroplasty. Mechanical wear tibiofemoral instability periprosthetic fracture thromboembolic disease compromised wound healing neurovascular problems and stiffness are less common but nevertheless troublesome sources of dysfunction after total knee arthroplasty. Complications compromise outcomes and the most effective way of dealing with complications is prevention. J Am Acad Orthop Surg 1999 7 311-324 Patients who have undergone total knee arthroplasties are enjoying prolonged success of the procedure well into the second decade with prosthetic survivorship in excess of 90 at 10 to 15 years. Despite these predictable results a number of complications continue to plague patient and surgeon alike. These fall into three major groups extensor mechanism complications other mechanical complications and regional or systemic complications. Understanding the incidence and etiology of these problems enhances the surgeonÕs ability to avoid them during the primary surgical procedure. With careful assessment of the symptomatic knee and an understanding of the effectiveness of salvage procedures one can generally achieve a satisfactory result. Extensor Mechanism Complications Over the past three decades the incidence of extensor mechanism complications has decreased from approximately 12 to as a result of design modifications technical advancements in attaining proper rotational and axial alignment of the individual components and improvements in soft-tissue Nonetheless the patello-femoral joint .