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Cranial Bones: Lateral View

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The lateral view of the cranium is dominated by temporal, sphenoid, and ethmoid bones.
The temporal bone forms the lower lateral side of the skull. The temporal bone is subdivided into several regions. The flattened upper portion is the squamous portion of the temporal bone. Below this area and projecting anteriorly is the zygomatic process of the temporal bone, which forms the posterior portion of the zygomatic arch. Posteriorly is the mastoid portion of the temporal bone. Projecting...

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A Postoperative Evaluation Guideline for Computer-Assisted Reconstruction of the Mandible

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Nasal Sculpting: Calculated and Predictable Tip Elevation With Cephalic Trim.

Jeremiah S Redstone¹, Saeed Chowdhry², Jonathan Nguyen¹

¹Department of Surgery, University of Louisville, Louisville, Ky.

|July 15, 2015

Summary

Cephalic alar trim, a rhinoplasty technique, significantly elevates the nasal tip. A 25% reduction in lower lateral cartilage height results in an average nasolabial angle change of 6.47°, aiding predictable tip elevation.

Keywords:

cephalic alar trim lower lateral cartilage nasal sculpting rhinoplasty nasal tip elevation nasolabial angles

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Endoscopic Septoplasty with Limited Two-line Resection: Minimally Invasive Surgery for Septal Deviation

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Published on: June 20, 2018

Area of Science:

Plastic Surgery
Facial Anatomy
Surgical Techniques

Background:

Rhinoplasty techniques for nasal tip rotation are well-documented.
Cephalic alar trim is a key method for nasal tip elevation.
Aesthetic guidelines for nasolabial angles exist, but precise prediction of tip elevation from cartilage resection is challenging.

Purpose of the Study:

To analyze the change in nasal tip elevation following measured resections of the lower lateral cartilages.
To provide surgeons with data for accurately predicting the effect of cephalic alar trim on tip elevation.

Main Methods:

Ten fresh cadaveric dissections were performed using a closed rhinoplasty technique.
Serial cephalic trim of the lower lateral cartilage was done in 25% increments.
Nasolabial angles were measured before and after each excision using digital photography and goniometry.

Main Results:

The mean initial nasolabial angle was 106° ± 2°.
Serial 25% reductions in lower lateral cartilage height yielded mean total nasolabial angle changes of 7.4°, 12.9°, and 19.6°.
The mean incremental change per 25% reduction was 6.47° ± 1.25°.

Conclusions:

The nasolabial angle is a critical aesthetic parameter in rhinoplasty.
Cephalic trim of the lower lateral cartilage is effective for modifying the nasolabial angle.
A 25% cephalic trim correlates with an average nasolabial angle change of 6.47°, facilitating predictable nasal tip elevation.