Knee (Rosenberg view)
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The Rosenberg view of the knees is a specialized projection often used to detect early signs of osteoarthritis. It should be the initial study for any patient with a suspicion of knee osteoarthritis.
The Rosenberg view is performed for any patient with a suspicion of knee osteoarthritis. It consists of a PA radiograph with weight-bearing and 45° of knee flexion. It is more sensitive than standard weight-bearing radiographs for the detection of joint space narrowing 1.
the patient is erect facing the upright detector with knees slightly bent at 45°
femur forms an angle of 25° to the upright detector
tibia forms an angle of 20° to the upright detector
central ray is at the level of the knee joint typically 1.5 cm distal to the apex of the patella, with a 10-20° caudal angle
superior to include bilateral distal femurs
inferior to include the proximal tibiae/fibulae
lateral to include skin margin of both knees
35 cm x 30 cm
Image technical evaluation
tibial plateau should be free from any superimposition
anterior and poster margins of the tibia plateau should be superimposed to demonstrate the knee joint in profile
femoral condyles should be free from superimposition with the intercondylar fossa in profile, giving the appearance of a 'notch'
Patients whom must have this examination performed will have trouble maintaining this position, due to the knee problems they are investigating. Ensure clear demonstrating and instruction is given to the patient before position, and, on completion, the patient is made aware so they can get in a more comfortable position.
An alternate view is the Schuss view, which differs from a flexion angle of 30°.
History and etymology
The Rosenberg view was described by the American orthopedic surgeon Thomas D Rosenberg (fl. 2021), who works in Utah, in 1988 2.
- 1. Fontboté R C, Nemtala U F, Contreras O O, Guerrero R. Proyección De Rosenberg En La Evaluación Radiológica De La Osteoartrosis De Rodilla. Rev Méd Chile. 2008;136(7):880-4. doi:10.4067/s0034-98872008000700009
- 2. Rosenberg T, Paulos L, Parker R, Coward D, Scott S. The Forty-Five-Degree Posteroanterior Flexion Weight-Bearing Radiograph of the Knee. J Bone Joint Surg Am. 1988;70(10):1479-83. - Pubmed
- 3. Jeannean Hall Rollins, Bruce W. Long, Tammy Curtis. Merrill's Atlas of Radiographic Positioning and Procedures - 3-Volume Set. (2022) ISBN: 9780323832793 - Google Books