Avulsion of the corrugator supercilii muscle through a closed rhinoplasty approach.

cle was 14.0 2.8 mm and 18.7 2.42 mm from the nasion, respectively. Miller et al.2 demonstrated that all supratrochlear branches are located more than 1.6 cm from the midline. Thus, our extent of dissection had no risk of nerve injury and avulsed most of the origin fibers. The transpalpebral approach to the corrugator supercilii and procerus muscles has become a standard procedure for the treatment of glabellar frown lines after its description by Knize3 and Guyuron et al.4 Although complete Table 1. Mean Preoperative and Postoperative Scales of Severity of Frown Lines