PMC3227387_01
Anteroposterior X-ray shows bilateral posterior dislocation difficulty with absence of normal half-moon sign.
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fig1
Routine anteroposterior radiograph of the shoulders (Figure 1) was misinterpreted.
Axial CT scan view reveals bilateral shoulder posterior dislocation with medium defect of articular surfaces (50% in the right, 30% in the left).
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fig2
Bilateral shoulder posterior dislocation was suspected and CT scan was requested (Figure 2).
One-year follow-up axial CT scan view shows bilateral small defect (less than 25%) in anteromedial part of the humeral head. These defects are less than what was seen in Figure 2.
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fig3
CT scan (Figure 3) showed bilateral small defect in anteromedial part of the humeral heads which is more in the left side.