Three-Dimensional Analysis of Nasal Symmetry Following Primary Correction of Unilateral Cleft Lip Nasal Deformity

An Automatic Framework for Nasal Esthetic Assessment by ResNet Convolutional Neural Network

Nasal base aesthetics is an interesting and challenging issue that attracts the attention of researchers in recent years. With that insight, in this study, we propose a novel automatic framework (AF) for evaluating the nasal base which can be useful to improve the symmetry in rhinoplasty and reconstruction. The introduced AF includes a hybrid model for nasal base landmarks recognition and a combined model for predicting nasal base symmetry. The proposed state-of-the-art nasal base landmark detection model is trained on the nasal base images for comprehensive qualitative and quantitative assessments. Then, the deep convolutional neural networks (CNN) and multi-layer perceptron neural network (MLP) models are integrated by concatenating their last hidden layer to evaluate the nasal base symmetry based on geometry features and tiled images of the nasal base. This study explores the concept of data augmentation by applying the methods motivated via commonly used image augmentation techniques. According to the experimental findings, the results of the AF are closely related to the otolaryngologists' ratings and are useful for preoperative planning, intraoperative decision-making, and postoperative assessment. Furthermore, the visualization indicates that the proposed AF is capable of predicting the nasal base symmetry and capturing asymmetry areas to facilitate semantic predictions. The codes are accessible at https://github.com/AshooriMaryam/Nasal-Aesthetic-Assessment-Deep-learning .

Three-Dimensional Quantification of Postoperative Facial Asymmetry in Patients With Unilateral Cleft lip and Palate Using Facial Symmetry Plane

OBJECTIVE

To quantitatively assess three-dimensional (3D) soft tissue facial asymmetry in patients with unilateral cleft lip and palate (UCLP) who have undergone primary lip repair.

DESIGN

Clinical, retrospective, comparative, methodological study.

PATIENTS/PARTICIPANTS

Twenty patients with UCLP were selected after a review of the records.

INCLUSION CRITERIA

Complete UCLP; surgically treated without secondary repair. An age-matched and sex-matched Control group was employed.

MAIN OUTCOME MEASURES

A 3D facial symmetry plane (FSP) was obtained by superimposing the point clouds of the original 3D facial image excluding the surgical site and including lip and nose areas and those of a mirrored facial image using the iterative closest point (ICP) adjustment method. The discrepancies in the depth and angle of the normal vector of the facial surface of each point cloud between right and left sides (cleft and non-cleft sides in the UCLP group, respectively) based on FSP were calculated.

RESULTS

Facial asymmetry in the UCLP group was significantly greater than in the Control group regarding both the discrepancies in the depth (1.34 ± 0.62, 0.73 ± 0.32 pixels, respectively) (P = .0004) and surface angle (18.0 ± 5.88, 12.8 ± 4.0°, respectively) (P = .0024). Biaxial assessment of the discrepancies in the depth and surface angle allowed us to visually extract UCLP patients with greater facial asymmetry.

CONCLUSIONS

Facial asymmetry analysis based on 3D FSP effectively facilitates the facial asymmetry quantification and soft tissue surgical outcome evaluation in patients with UCLP.

Longitudinal Three-Dimensional Stereophotogrammetric Growth Analysis in Infants with Unilateral Cleft Lip and Palate from 3 to 12 Months of Age

This longitudinal study aimed to evaluate facial growth and soft tissue changes in infants with complete unilateral cleft lip, alveolus, and palate (CUCLAP) at ages 3, 9, and 12 months. Using 3D images of 22 CUCLAP infants, average faces and distance maps for the entire face and specific regions were created. Color-coded maps highlighted more significant soft tissue changes from 3 to 9 months than from 9 to 12 months. The first interval showed substantial growth in the entire face, particularly in the forehead, eyes, lower lip, chin, and cheeks (p < 0.001), while the second interval exhibited no significant growth. This study provides insights into facial soft tissue growth in CUCLAP infants during critical developmental stages, emphasizing substantial improvements between 3 and 9 months, mainly in the chin, lower lip, and forehead. However, uneven growth occurred in the upper lip, philtrum, and nostrils throughout both intervals, with an overall decline in growth from 9 to 12 months. These findings underscore the dynamic nature of soft tissue growth in CUCLAP patients, highlighting the need to consider these patterns in treatment planning. Future research should explore the underlying factors and develop customized treatment interventions for enhanced facial aesthetics and function in this population.

Long-Term Outcome of Primary Rhinoplasty with Overcorrection in Patients with Unilateral Cleft Lip: Avoiding Intermediate Rhinoplasty

BACKGROUND

No consensus exists regarding the timing or technique of rhinoplasty for correction of the unilateral cleft lip nose deformity, with few studies examining the long-term effects of a single technique. This study appraised the long-term outcomes of primary rhinoplasty using the Tajima technique for overcorrection in a cohort of patients with unilateral cleft lip nose deformity after attaining skeletal maturity.

METHODS

Consecutive nonsyndromic patients with unilateral cleft lip nose deformity ( n = 103) who underwent primary rhinoplasty with overcorrection by a single surgeon between 2000 and 2005 were reviewed. Patients with unilateral cleft lip and nasal deformity who underwent primary rhinoplasty (but with no overcorrection) ( n = 30) and noncleft individuals ( n = 27) were recruited for comparison. Outcomes were assessed through FACE-Q scales evaluating satisfaction with appearance of nose and nostrils (two scales) and computer-based objective photogrammetric analysis of nasal symmetry (nostril height, nostril width, nostril area, alar height, and alar width parameters).

RESULTS

Significant differences (all P < 0.001) were observed between the Tajima and non-Tajima groups for all but one photogrammetric nasal parameter (nostril area), with the Tajima group demonstrating closer mean values to the noncleft group. The Tajima and noncleft groups demonstrated no significant difference (all P > 0.05) for scores of FACE-Q nose and nostrils scales.

CONCLUSION

This study indicated that the patients who underwent primary rhinoplasty with overcorrection had improved results with no necessity for intermediate rhinoplasty, emphasizing that the procedure is an effective approach to correct the unilateral cleft nose deformity.

CLINICAL QUESTION/LEVEL OF EVIDENCE

Therapeutic, III.

Postoperative Nasal Conformers in Cleft Rhinoplasty: Are They Efficacious?

BACKGROUND

Lip and nose symmetry the goal of repair of unilateral cleft lip and different preoperative and postoperative treatments have been developed with this purpose. The objective of this study was to compare 2 techniques used for primary cleft lip nose repair.

MATERIALS AND METHODS

This is an retrospective study between 2 groups of patients with unilateral cleft lip and palate who underwent primary nasolabial repair either with or without postoperative nasal conformers. Data collection was accomplished by evaluation of nasal symmetry through anthropometric measurements under general anesthesia during primary cleft palate repair.

RESULTS

Our comparative study did not find a statistically significant difference regarding percentile indexes of nasal asymmetry between the 2 groups. Major revision requirement (>3 mm of asymmetry in any of the nose measurements) was observed in 3.84% of nasal conformer group and 4.65% of the group without nasal conformers.

CONCLUSIONS

The results obtained from this study provides showed that placement of postoperative nasal conformers did not improve nasal symmetry in patients with unilateral cleft lip and palate. Based on these findings and available scientific evidence, definitive conclusions about the effectiveness of these devices on nasal symmetry after unilateral cleft lip nose repair cannot be drawn.

Deep-plane facelift technique for managing extensive hemifacial tumors: A retrospective study

This study aimed to evaluate functional and aesthetic outcomes in patients undergoing deep-plane facelifts for the management of extensive hemifacial tumors. The retrospective study included patients who had been diagnosed with benign tumors with extensive hemifacial involvement. All patients underwent tumor debulking via a dual-plane facelift approach, assisted by an ICG camera to visualize the facial nerve structures. To manage the laxity of the skin envelope, the deep-plane face-lift was performed by suspending the superficial musculoaponeurotic layer, followed by suture fixation to the parotid-masseteric fascia. Clinical outcomes, including complications, House-Brackmann grading for facial paralysis, and tumor recurrence rate were investigated. Quantitative facial nerve examination was carried out using FACE-gram software (Massachusetts Eye and Ear Infirmary, Boston, USA) to measure mouth corner movement at rest and when smiling. Using preoperative and 1-year postoperative 3D photographs, facial symmetry was assessed using comparisons of facial volume and the root-mean-square deviation (RMSD) value to represent the height difference between each hemiface. In total, 25 patients who met the inclusion criteria were recruited to the study. Regarding the types of tumor, 13 of the 25 patients were diagnosed with vascular lesions and the other 12 with neurofibromatosis plexiform. Following surgery, two patients showed temporary palsy of the buccal branches - grade II on the House-Brackmann scale - but neural functioning was eventually restored during the follow-up period. During resting, the mouth corner excursion ratio was significantly improved, from 1.11 ± 0.19 preoperatively to 1.02 ± 0.08 postoperatively (p = 0.022). The facial volume ratio was significantly improved in the lower face, from 1.57 ± 0.66 preoperatively to 1.19 ± 0.18 postoperatively (p = 0.008). The RMSD was significantly decreased, from 4.56 ± 2.35 mm preoperatively to 2.08 ± 0.99 mm postoperatively (p < 0.001), representing a decrease in facial asymmetry. Within the limitations of the study, it seems that the ICG camera-assisted deep-plane facelift technique allows preservation of facial nerve functioning and enhances facial symmetry when managing extensive hemifacial tumors.

Growth patterns of the nasolabial region following unilateral cleft lip primary repair

Surgical correction is the optimal way of repairing a congenital cleft lip. Patients with this condition often undergo initial surgical treatment at an early age and achieve an acceptable outcome. However, their levels of satisfaction will decrease in later stages of life as facial growth and development will inevitably cause changes in long-term outcomes, especially in the nasolabial region. Therefore, it is important for surgeons to understand nasolabial development after primary treatment and tailor their surgical techniques appropriately. This review focuses on the growth patterns of the nasolabial region after primary repair, so as to provide references for operative strategy.

Modified Unilateral Incomplete Cleft Lip Repair with Primary Nasal Overcorrection: A Muscle-Driven Technique

SUMMARY

Millard's rotation-advancement principle, first-described 60 years ago, continues to guide surgeons in reconstruction of the unilateral cleft lip. Modifications of the rotation-advancement repair are commonly used; however, distinction between the complete and incomplete forms of cleft lip has received less emphasis in surgical procedure descriptions. As a unilateral incomplete cleft lip could present with more tissue overall and a larger lip on the cleft side than a complete form of cleft lip, the authors have adopted a deformity-specific technical approach to treat each particular cleft form. This article highlights the 10 key steps for execution of a modified unilateral incomplete cleft lip repair using the rotation-advancement principle plus the "skin-follows-muscle" model. The intraoperative design and the reconstruction of the skin, muscle, vermilion, intraoral mucosal, and nasal elements are fully detailed in the accompanying videos.

Primary Nasal Correction in Unilateral Cleft Lip: An Ongoing Journey

BACKGROUND

A cleft lip deformity, whether unilateral or bilateral, is usually associated with a deformity of the nose. In present day cleft surgery, it is routine to perform a varying extent of correction of the nasal deformity. There is often relapse and ongoing deformity which warrant further nasal surgery. The authors describe their method of nasal correction which includes using a hypodermic needle to help achieve repositioning and suspension of the nasal cartilages.

MATERIALS AND METHOD

The authors reviewed 100 consecutive cases of unilateral cleft lip who had nasal correction since June 2018. There were 59 males and 41 females with a mean age of 5.5 months. There were 72 complete and 28 incomplete cleft lips. The steps in nasal correction include septal repositioning, sutures to approximate the ala domes, and upper medial crura, suspension of the lower lateral cartilage to the upper lateral cartilage and sutures to approximate the skin, lower lateral cartilage, and mucosa in a sandwich fashion.

RESULTS

The patients were followed up for a range of 9 to 21 months with a mean of 18 months. The correction immediately postop and at 2 weeks follow up was good. However, at 1 year follow up there was some evidence of relapse. The correction achieved was, however, superior to that achieved before this method. None of the relapses were deemed severe enough to warrant further surgery at this stage.

CONCLUSIONS

This method of nasal correction is recommended to achieve superior outcomes in the surgical treatment of unilateral cleft lips.

Photogrammetric Outcomes of Primary Nasal Correction in Unilateral Cleft Lip Patients: Early Childhood Results From a Single Surgeon's Experience

BACKGROUND

Concerns of nonlasting results and potential nasal growth damage precluded cleft nasal correction at the time of initial cleft lip repair. Our goal was to evaluate the outcome of primary cleft nasal correction in our patients with unilateral cleft lip.

METHODS

A retrospective review of patients with complete and incomplete unilateral cleft lip who underwent primary cleft nasal correction from 2010 to 2017 by the same surgeon was performed. The cleft-to-noncleft nostril height, width, one-fourth medial part of nostril height, nasal sill height, and nostril area ratios, as well as inner nostril height-to-width ratios were determined from standard basilar view photographs taken in different time points (T1, <3 months; T2, 3-12 months; T3, 12-36 months; and T4, >36 months after surgery). A 5-point visual analog scale (1 = worst, 5 = best) was used to assess each patient's nose appearance.

RESULTS

Seventy-two patients were identified (66.7% male, 51.3% with a complete cleft lip). Average visual analog scale scores T1-T4 were 3.88 ± 0.85, 3.72 ± 0.93, 3.54 ± 0.99, and 3.40 ± 0.71, respectively. Intraclass correlation ranged from 0.61 to 0.94. A significant decrease [mean difference (SD)] was found for cleft-to-noncleft nostril width ratio [0.15 (0.18)] from T1 to T2, and an increase for one-fourth medial height ratio [-0.09 (0.07)] and for inner nostril height-to-width ratio in the noncleft side [-0.23 (0.25)] from T1 to T3. Thirteen patients required secondary surgical revision.

CONCLUSION

Based on photogrammetry, primary cleft nasal correction in our patients with unilateral cleft lip achieved acceptable and stable outcomes during early childhood.

Primary Rhinoplasty Does Not Interfere with Nasal Growth: A Long-Term Three-Dimensional Morphometric Outcome Study in Patients with Unilateral Cleft

BACKGROUND

Primary rhinoplasty has not been universally adopted because the potential for nasal growth impairment remains an unsolved issue in cleft care. This study's purpose was to assess the long-term effects of primary rhinoplasty performed by a single surgeon in a cohort of patients with a unilateral cleft lip nose deformity.

METHODS

Three-dimensional nasal morphometric measurements (linear, angular, proportional, surface area, and volume) were collected from consecutive patients (cleft group, n = 52; mean age, 19 ± 1 year) who had undergone primary rhinoplasty with the use of the Noordhoff approach between 1995 and 2002 and reached skeletal maturity. Normal age-, sex-, and ethnicity-matched subjects (control group, n = 52) were identified for comparative analyses.

RESULTS

No significant differences (all p > 0.05) were observed for most measures, including nasal height, alar width, nasal dorsum angle, columellar angle, columellar-labial angle, nasal tip/height ratio, nasal index, alar width/intercanthal distance ratio, nasal surface area, and nasal volume. The cleft group displayed significantly (all p < 0.05) lower nasal bridge length and nasal tip projection, and greater nasal protrusion, tip/midline deviation, nasal tip angle, nasal tip protrusion width index, and alar width/mouth ratio values than the control group.

CONCLUSIONS

Primary rhinoplasty does not interfere with nasal growth as measured by three-dimensional photogrammetric analysis. Further imaging studies are required for the assessment of development in other anatomical nasal structures.

CLINICAL QUESTION/LEVEL OF EVIDENCE

Therapeutic, IV.

Associations Between Genetic Data and Quantitative Assessment of Normal Facial Asymmetry

Human facial asymmetry is due to a complex interaction of genetic and environmental factors. To identify genetic influences on facial asymmetry, we developed a method for automated scoring that summarizes local morphology features and their spatial distribution. A genome-wide association study using asymmetry scores from two local symmetry features was conducted and significant genetic associations were identified for one asymmetry feature, including genes thought to play a role in craniofacial disorders and development: NFATC1, SOX5, NBAS, and TCF7L1. These results provide evidence that normal variation in facial asymmetry may be impacted by common genetic variants and further motivate the development of automated summaries of complex phenotypes.

The possibilities of a portable low-budget three-dimensional stereophotogrammetry system in neonates: a prospective growth analysis and analysis of accuracy

Background

With the technical development, portable three-dimensional (3D) photogrammetry systems are becoming more en vogue because of cost-effectiveness and comparable accuracy to common stationary 3D systems. The purpose of the study was to evaluate the feasibility and accuracy of a low-budget portable system for 3D image acquisition with special regard to the gracile nasal region in neonates. Furthermore, the study aimed to establish a 3D data set of the first 180 days post partum.

Methods

Thirty-three healthy, full-term newborn were enrolled and 3D photographs were prospectively taken monthly with a portable low-budget 3D stereophotogrammetry system (FUEL3D® SCANIFY®) for six months. In the third month, age-matched and corresponding 3D models were acquired by taking an impression of the perinasal area. The resulting plaster models were scanned (3Shape D700, 3Shape® A/S, Denmark). Three examiners analyzed independently 21 defined landmarks of the generated Standard Tessellation Language files with regard to accuracy by using 3dMDvultus™ software. A semi-automatic 3D best-fit analysis of 3D photo and plaster models were performed by using Geomagic® and the Root Mean Squared (RMS) errors were calculated.

Results

Statistically significant changes of midfacial distances and angles with a focus on nasal growth during the first 180 days postpartum could be specified in absolute and relative dimensions. Best-fit analysis in the third month revealed a RMS error of 0.72 ± 0.22 mm with a mean standard deviation of 0.71 ± 0.21 mm.

Conclusions

The analyzed portable 3D stereophotogrammetry system is a feasible methodology with good accuracy, even in newborn. A description of the growth as well as the establishment of a 3D data set was performed. Its implementation for basic documentation for example in cleft patients is possible and might reduce the need for impressions and facilitate the communications with parents and the interdisciplinary team.

Outcomes of Closed Versus Open Technique of Rhinoplasty During Primary Repair of Unilateral Cleft Lip: A Systematic Review

OBJECTIVE

Primary cleft rhinoplasty has almost become the norm in cleft practice. Although various closed and open rhinoplasty techniques are in use, there is no consensus as to which technique is superior in terms of outcome. The authors hypothesized that the long-term outcomes of open rhinoplasty during primary cleft lip repair in unilateral cleft is better than that of the closed method. This systematic review has been done to evaluate the hypothesis by a review and analysis of literature.

METHODS

Protocol was registered on the PROSPERO register of systematic reviews. PRISMA-P guidelines for the conduct of systematic review were followed. Literature search was done in various databases. The inclusion criteria were patients with nonsyndromic unilateral cleft lip undergoing rhinoplasty with primary cleft lip repair and preference given to studies comparing the 2 procedures.

RESULTS

Sixteen articles were selected based on inclusion criteria after screening 522 articles-1 randomized controlled trial, 2 retrospective cohorts, and 13 case series. Both closed and open techniques have achieved good symmetry of nostrils with no impairment of growth. No advantage of one technique over the other was noted.

CONCLUSIONS

There is a paucity of randomized controlled trials and prospective studies on the subject to arrive at an evidence-based recommendation as to whether open or closed rhinoplasty during primary cleft lip repair gives better long-term outcomes. Due to insufficient evidence, the authors are not able to support or refute the hypothesis put forward in the review.