PMC8491730_01
(a) Minor skin lesion with mild perifocal redness on the palm of the left hand. (b) Important swelling of the back of the hand (the visible skin lesion stems from a previous injury).
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Apart from mild perifocal redness and tenderness around the small penetration wound, there were no signs of infection and no skin changes (Figure 1).
X-ray 6 h after trauma showing marked subcutaneous emphysema extending to the tip of the fingers and towards the forearm. The arrows depict the extension of the air along the epifascial planes.
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The X-ray of the hand exhibited extensive subcutaneous emphysema (Figure 2).
X-ray after the contusion of the left hand 7 years ago with visible subcutaneous air collections emphysema of the left arm.
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Interestingly, the same patient had suffered from emphysema of the same arm 7 years ago after a contusion of the left wrist without visible skin lesions or a fracture (Figure 3).