Analyzing the Facial Nerve at Zuker’s Point Using Geometric Morphometrics: A Cadaveric Study

Three-dimensional coordinate data of the facial nerve in relation to relevant landmarks (LM) in a cadaveric sample (LM1, oral commissure; LM2, root of the auricular helix; LM 3, Zuker's point; LM4, facial nerve).R script used to analyze coordinate data.Fig. S1. Outlier plot against all landmarks (LM).Fig. S2. Example outliers. Zuker’s point (LM3) should be one half the distance between labial commissure (LM1) and root of the auricular helix (LM2), regardless of GPA transformations. Top image indicates this is not the case and suggests an error during data collection. In the bottom image, the nerve (LM4) was captured superficial to Zuker’s point and very far out of expected range, suggesting a problem with the nerve identification or landmark capture order.Fig S3. Outlier with a generally typical anatomical pattern on the extremes in terms of ZP (suggesting a very rounded face) and an extremely deep nerve branch.