temporal branch of facial nerve injury (danger zone)

The temporal branch of the facial nerve is at greatest risk for injury where it crosses the zygomatic arch. Injury to the temporal branch of the facial nerve leads to an inability to elevate the eyebrows and brow ptosis and paralysis. Asymmetric appearance of the forehead can also occur because there will be a loss of the lines and wrinkles on the affected side. One easy method to delineate the danger area of the temporal nerve is to draw a line from the earlobe to the lateral edge of the eyebrow, and the tragus to just above and behind the highest forehead crease(or 2 cm above supraorbital rim). In the area between these lines , the nerve is superficial, and it is critical to undermine just below the dermis in the superficial fat above the fascia.



Relate posted

• Nerve injury