Morel-Lavallée lesion (MLL) is a degloving injury in soft tissues caused by 
shear force accompanying trauma. Even if it is a small lacrimal wound at the 
initial visit, there is a range of skin necrosis which is not suitable for it. 
As a cause of the injury, a shearing force was applied over a wide range, and 
penetrating blood vessel damage to the skin occurred, resulting in skin 
necrosis. Attention is required.