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A Settegast is a standard medical x-ray projection that presents a tangential view of the patella. To acquire such an image the patient is placed in a prone position with the knee flexed at least 90 degrees and the field of view centered on the patellofemoral joint space.
Fairbank's changes describe the radiological changes observed on an AP radiograph of the knee after meniscectomy. [ 1 ] Fairbank identified significant changes including squaring of the femoral condyles , peak eminences, ridging, and joint space narrowing.
English: Postoperative X-ray of normal knee prosthesis of a 73 year old man who had osteoarthritis. Anteroposterior view. It shows the following measurements used for post-operative evaluation: FFC: frontal femoral component angle. It is typically regarded as optimal when being 2–7° in valgus.
Lateral view. It shows the following measurements used for post-operative evaluation : Anterior femoral notching (the femoral component causing reduced thickness of the distal femur anteriorly), which seems to cause an increased risk of fractures when exceeding about 3 mm. Reference:
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The Ottawa knee rules are a set of rules used to help physicians determine whether an x-ray of the knee is needed. [1] They state that an X-ray is required only in patients who have an acute knee injury with one or more of the following: Age 55 years or older; Tenderness at head of fibula; Isolated tenderness of patella
However, from a practical point of view, false positives that lead to negative X-ray tests were the very thing that the knee rules are trying to address. Nonetheless, the Pittsburgh knee rules offer fewer false positives than do the Ottawa knee rules, though the Ottawa knee rules are more commonly used. [2]
Projectional radiography, also known as conventional radiography, [1] is a form of radiography and medical imaging that produces two-dimensional images by X-ray radiation.The image acquisition is generally performed by radiographers, and the images are often examined by radiologists.