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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:
English: Postoperative X-ray of normal knee prosthesis of a 73 year old man who had osteoarthritis.It shows KS zones (Knee Society, 2015).Reference: (2015). "Development of a Modern Knee Society Radiographic Evaluation System and Methodology for Total Knee Arthroplasty".
- Reusing images - Conflicts of interest: None Mikael Häggström, M.D. Consent note: Written informed consent was obtained from the individual, including online publication. Other versions: Postoperative X-ray of normal knee prosthesis: Anteroposterior view
A difference of greater than 10-15° indicates a positive test and likely injuries to the posterolateral knee. Next, repeat the test with the patient's knees flexed at 90°. Increased rotation at 90° indicates a combined PCL and posterolateral knee injury. If the rotation decreases compared to 30°, then an isolated PLC injury has occurred.
The knee bursae are the fluid-filled sacs and synovial pockets that surround and sometimes communicate with the knee joint cavity. The bursae are thin-walled, and filled with synovial fluid . They represent the weak point of the joint, but also provide enlargements to the joint space. [ 1 ]
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Hip-knee-ankle angle. On projectional radiography, the degree of varus or valgus deformity can be quantified by the hip-knee-ankle angle, [7] which is an angle between the femoral mechanical axis and the center of the ankle joint. [8] It is normally between 1.0° and 1.5° of varus in adults. [9] Normal ranges are different in children. [10]
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.