Skeletal radiology: test yourself—knee pain after falling

Part I

A 35-year-old African American woman presents with left knee pain at the emergency room after a fall. Plain film radiography is performed Figs. 1, 2, 3 and 4.

Fig. 1
figure 1

Externally rotated oblique plain film radiograph of the left knee demonstrating a superiorly displaced avulsion fracture located at the posteromedial tibial plateau (arrow)

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Fig. 2
figure 2

Fat-suppressed T2 fast spin-echo image demonstrating the avulsion at the infraglenoid tubercle of the posteromedial tibial plateau (arrow)

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Fig. 3
figure 3

Fat-suppressed T2 fast spin-echo image showing the anterior cruciate ligament

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Fig. 4
figure 4

Fat-suppressed T2 fast spin-echo image demonstrating contusions in the lateral femoral condyle (asterisk) and posterolateral tibial plateau (arrow)

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