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Original Article |

Zonal Analysis of Facial Asymmetry and Its Clinical Significance in Facial Plastic Surgery

Karan Dhir, MD; William Lawson, MD, DDS; William J. Binder, MD
JAMA Facial Plast Surg. 2013;15(2):110-112. doi:10.1001/2013.jamafacial.65.
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Objectives  To describe common patterns of facial asymmetry and to augment the facial analysis paradigm for improved preoperative counseling and surgical planning.

Methods  We conducted a frontal photographic analysis of 50 patients who were seeking various types of facial cosmetic surgical procedures. The horizontal zonal thirds of the face were analyzed, and the bilateral data points were compared in regard to brow height, width of midface at maximum distance, malar eminence height, nasal alar height, and mandible width measured from the oral commissure to the gonial angle.

Results  Forty-five patients demonstrated measurable asymmetry of the midface. The malar eminence was found to be more superiorly positioned and defined on the narrower side of the face in all cases. In contrast, the contralateral wider side of the face appeared flatter, with a more hypoplastic, inferiorly positioned malar eminence. Also, the wider side of the face more often demonstrated a wider mandibular dimension and a superiorly displaced ala. The upper third of the face, in regard to brow height, was the most variable and showed little correlation to the lower two-thirds of the face.

Conclusion  This facial analysis exercise can assist the surgeon in (1) preoperative counseling, (2) managing expectations, (3) choosing appropriate-sized implants for improved symmetry, and (4) offering a more detailed assessment during the counseling of patients before face-lift surgery.

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Grahic Jump Location

Figure. Frontal photograph demonstrating common facial developmental findings. A, Upper third of face with the left brow more superior in position. B and C, Standardization lines that are horizontal and equal in length within 2 mm. D, Left midface demonstrates inferiorly positioned malar eminence (ovals) on the wider side of the face. E, Vector of ala more superiorly positioned toward the wider side of the face. F, Left mandible wider in conjunction with midface findings.

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Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

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