An anatomical approach to glabellar rhytids

Objective: To identify surface landmarks that can serve as reference points to the underlying musculature in the treatment of glabellar rhytids. Methods: Fifty cadaver hemibrows were dissected to assess the location, dis position, and,relationships of the brow muscles, along with their variation s at each of several consistent locations. Particular attention was paid to the corrugator supercilii, frontal belly of the frontalis, and procerus mu scles. Conclusions: The information gained here may be applied to the pharmacologi cal or surgical treatment of glabellar rhytids. Knowledge of the frequent l ocation of the muscles involved, relative to easily identifiable surface la ndmarks, allows a more precise approach.