2024年12月11日 · TKA polyethylene wear refers to macroscopic premature failure of polyethylene (PE) due to excessive loading and mechanical loosening Diagnosis is generally made with plain radiographs of the knee showing narrowing of the tibiofemoral implant interface

Prosthetic knee instability is a common cause of patient dissatisfaction and early failure after total knee arthroplasty (TKA). Strategies to manage such instability are dependent on the recognition of the presenting instability pattern because some require full revision, whereas others can be managed by polyethylene exchange (PE) only.

The use of modular total knee arthroplasty (TKA) implants allows surgeons to perform isolated tibial polyethylene insert exchange (IPE) while retaining well-fixed and stable components. The purported advantages of IPE include preservation of bone stock, shorter operating time, less blood loss, faster rehabilitation and lower cost.

2025年2月20日 · recent literature suggests CR-TKA designs demonstrate a greater increase in patellofemoral contact pressures when compared to other TKA designs

Highly cross-linked polyethylene (HXLPE) is used in total hip arthroplasty with excellent outcomes; however, its use in total knee arthroplasty (TKA) remains conflicting. This review summarizes biomechanical and wear properties, clinical outcomes, and …

We defined arthrofibrosis after TKA as a flexion contracture greater than or equal to 5° and/or knee flexion less than 90°, in concordance with a recent systematic review and meta-analysis that reviewed 35 studies [20].

Polyethylene (PE) is the key component of total knee replacement (TKR). The wear of polyethylene, a common cause of revision surgeries, depends on multiple factors. The mechanical properties, wear characteristics, and oxidative resistance of PE can ...

The articular design of a polyethylene insert influences the kinematics and overall function of a total knee arthroplasty (TKA). Standard symmetric posterior-stabilized and cruciate-retaining polyethylene designs have a long track record of high patient satisfaction and longevity in TKA.

A complication of total knee arthroplasty (TKA) is fatigue-type wear, which can destroy a tibial inlay in <10 years. This deleterious wear mechanism occurs during cyclic loading if the yield stress of polyethylene is exceeded.

2018年3月10日 · Intraoperative photograph of a patient with an acute infection after total knee arthroplasty (TKA). Note the thickened synovial tissue. The treatment of acute hematogenous PJIs with ODPE has been shown to be successful in the majority of …