Cortical thickness parameters for endoscopic browlift fixation.

Area of Science:

• Plastic Surgery
• Anatomy
• Surgical Techniques

Background:

• Endoscopic browlift utilizes bony fixation in the lateral frontal region and soft tissue fixation in the temporal region.
• While frontal bony fixation is standard, data on bicortical thickness in this area is limited.

Purpose of the Study:

• To measure bicortical thickness from the frontal midline to the inferior temporal region.
• To aid surgeons in selecting appropriate fixation planes during endoscopic browlifts.

Main Methods:

• Bicortical thickness was measured in 13 female cadavers.
• Measurements were taken along coronal planes at specific anatomical landmarks.
• Data was collected at 1-cm intervals from the midline laterally.

Main Results:

• Frontal region thickness ranged from 8.9 ± 2.4 mm to 5.6 ± 1.8 mm.
• Temporal region thickness ranged from 5.6 ± 2.8 mm to 2.8 ± 1.4 mm.
• Minimum thickness observed was 3.7 mm (frontal) and 1.3 mm (temporal).

Conclusions:

• Measuring cortical thickness is crucial to prevent inner cortex violation during endoscopic browlifts.
• Bony fixation in the temporal region is not recommended due to thin cortices.
• The lateral frontal region exhibits minimal bicortical thickness, requiring careful fixation planning.