PMC6243343_01
Anteroposterior radiograph of the patient's left knee showing lateral tibiofibular dislocation. The arrow highlights the lack of tibiofibular overlap. "Red dot" indicates an abnormality identified by the radiographer
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fig1
Plain radiographs of the knee were suggestive of proximal tibiofibular dislocation, with no overlap of the fibula and tibia on the anteroposterior (AP) film (Figure 1), and anterior displacement of the fibular head on the lateral film (Figure 2).
Lateral radiograph of the patient's left knee showing anterior tibiofibular dislocation. The arrow indicates the direction of dislocation in this view.
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fig2
Plain radiographs of the knee were suggestive of proximal tibiofibular dislocation, with no overlap of the fibula and tibia on the anteroposterior (AP) film (Figure 1), and anterior displacement of the fibular head on the lateral film (Figure 2).
Coronal proton density fat saturation MRI [repetition time (TR) = 4500/echo time (TE) = 32.18] of the left knee showing high signal around the tibiofibular ligament complex (thin arrow) and lateral translation of the fibular head (thick arrow).
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fig3
Axial proton density fat saturation MRI [repetition time(TR) = 3480/echo time (TE) = 31.87] of the left knee showing high signal around the tibiofibular ligament complex (thin arrow) and anterolateral translation of the fibular head (thick arrow).
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fig4
Anteroposterior post-reduction image intensifier image of the left knee showing normal tibiofibular overlap. Arrow indicates the area of tibio-fibular overlap.
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fig5
The patient was taken to the operation theatre for closed reduction under general anaesthesia, with the reduction visualized under the image intensifier (Figure 5), confirming a satisfactory outcome.