In cases of orbital trauma, what is the cause of loss of the supraorbital crease?

Loss of the supraorbital crease in cases of orbital trauma is primarily associated with enophthalmos, which refers to the posterior displacement of the eyeball within the orbit. When the orbit is fractured or otherwise injured, the volume of the orbit can change, frequently resulting in the eye being pushed backward. This position can alter the surrounding soft tissue structures, including the position of the eyelids and the formation of the supraorbital crease.

The supraorbital crease is influenced by muscle tone and the position of the underlying eye and surrounding tissues. With enophthalmos, not only does the position of the globe change, but there may also be alterations in the surrounding fibrofatty tissues that contribute to the appearance of the eyelids and the supraorbital area. The loss of definition in the supraorbital crease occurs as the normal relationships between these tissues become disrupted.

In contrast, conditions like hemorrhage may cause swelling or bruising but do not typically directly lead to a loss of the supraorbital crease in the same manner. Exophthalmos, characterized by the protrusion of the eyeball, would have an entirely different impact on the region and might actually enhance the crease due to increased tension in the surrounding tissue. Ptosis