Mathematical Analysis of the Functions of Spreader Graft

Novel method for correcting cephalic rotation in Asian nasal tip plasty

BACKGROUND

To correct nasal tip cephalic rotation, SEG made of cartilage or Medpor are often used in rhinoplasty. These techniques require extensive experience for the surgeon, and not all patients can accept this procedure. In this research, we introduce a new method to correct nasal tip cephalic rotation that is relatively simple and rapid.

METHODS

Fifty-nine patients who had rhinoplasty using our scaffold were enrolled in the study between January 2020 and January 2021. The authors evaluated the change of nasolabial angel by photogrammetry using standardized clinical photogrammetric techniques. Patients' satisfaction regarding postoperative results was also surveyed.

RESULTS

The mean postoperative follow-up duration was 12 months. No complication (infection, extrusion, and displacement) was happened in all patients. Analysis showed our scaffold can correct nasal tip cephalic rotation effectively (98.61±1.21 preoperatively and 89.68±0.99 postoperatively, P<0.0001). And the patient satisfaction rate is 98%.

CONCLUSION

We constructed an integrated scaffold by simply folding and suturing a high-density polyethylene sheet (Su-Por) sheet to correct nasal tip cephalic rotation. Using the scaffold we designed, we did not need to alter the structure of the nasal septum, which reduced the operative duration and simplified the surgical procedure.

Balanced Cantilever Graft for Supporting the Cartilaginous Side Wall of Nose

BACKGROUND

Many locations for the nasal valve have been suggested, and more recently the concept of the flow-limiting segment was introduced. Rather than being controlled by an internal and external valve, flow through the nose is regulated by the cartilaginous side wall, septum, and inferior turbinate.

OBJECTIVES

The aim of this study was to assess the balanced cantilever graft (BCLG) as a technique to support the lateral nasal wall.

METHODS

Patients undergoing primary open septorhinoplasty over a 2-year period were studied. Follow-up period was a minimum of 6 months to a maximum of 24 months. Subjective improvement of function was measured with a visual analog scale (VAS) and aesthetic outcomes by FACE-Q score. Objective assessment of the airway was performed with a nasal peak inspiratory flow (NPIF) meter. Strips of septal cartilage of sufficient dimensions were placed in submucosal pockets created under the area of the lateral wall to be supported.

RESULTS

Sixty patients received BCLGs. The VAS score for nasal obstruction increased from 2.6 preoperatively to 8.1 postoperatively. FACE-Q increased from 16.7 preoperatively to 36.6 postoperatively. NPIF was 74.9 L/minute preoperatively, improving to 95 L/minute postoperatively. Statistically significant improvements were seen in these functional and aesthetic scores.

CONCLUSIONS

BCLGs support the weakened part of lateral nasal wall by their elastance. Minimal cartilage is required and the graft can be altered to support various parts of the lateral nasal wall. This graft does not cause an aesthetic deficiency whilst providing adequate support.

LEVEL OF EVIDENCE: 4