2024年12月7日 · Total knee arthroplasty (TKA), total knee replacement (TKR), or tricompartmental knee replacement is an orthopedic procedure whereby the three articular surfaces of the knee (femoral, tibial, and patellar) are replaced by prosthetic components.

Ideal post‐TKA radiographs comprise whole lower extremity anteroposterior and lateral views taken under weight bearing conditions along with a skyline view of the patellofemoral joint. Among other things, weight bearing exposes the true alignment, …

Painful total knee arthroplasty (TKA) represents a diagnostic challenge for the clinician and radiologist, as there is a wide variety of potential etiologies, with a broad range of clinical presentations, and the abnormalities on imaging studies are often subtle, absent, or nonspecific.

Almost every patient gets x-rays in the PACU after a TKA. Examine the femoral and tibial component, knee alignment, to determine if the technique was successful.

On outpatient visit, some providers recommend getting a baseline hip to ankle x-ray which may be better in calculating tibiofemoral angle to assess coronal plane alignment of the joint, but other studies show a standard AP is a valid alternative (6).

2019年5月29日 · This chapter discusses diagnostic imaging of the failed TKA, including the roles of radiographs, radionuclide scans, computed tomography (CT), and magnetic resonance imaging (MRI).

2013年11月21日 · Imaging patients with knee replacements is now commonplace. Our purpose in this article is to identify key current concepts in primary total knee arthroplasty and to explain their relevance to diagnostic radiology. The knee is a synovial joint with three articular compartments: medial, lateral, and patellofemoral.

2022年6月4日 · Plain radiography (X-Rays) is the most commonly used radiological modality in the evaluation of TKA. Advantages of plain radiography include the low cost, limited and mild radiation risk, ease of access, and the very short time needed to generate films.

2016年8月26日 · In TKA, polyethylene wear may be evaluated on standing AP and lateral views with the x-ray beam parallel to the tibial baseplate (Fig. 10-10). The distance from the femoral condyles to the tibial baseplate can then be measured.

Smith et al [60] evaluated 80 bone scans in patients with symptomatic TKA, classifying even mildly increased activity on either blood-pool or delayed images as abnormal, and found a high sensitivity (92.3%) for distinguishing abnormal (ie, those with either loosening or …