Fractured neck of radius

Case contributed by Frank Gaillard
Diagnosis certain

Fractured neck of radius with sail sign due to joint effusion. The posterior fat pad is also visible.

Case Discussion

Radial head/neck injuries are common, often resulting from a fall onto an outstretched hand. Sometimes if undisplaced they can be difficult to see. The presence of a visible posterior fat pad and an elevated anterior fat pad are indicative of joint effusion. Even if a fracture is not visible, if a joint effusion is present this should raise suspicion of a fracture. Follow-up imaging may be beneficial in these cases.

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