Correction and prevention of tip asymmetries, bossae, and alar retraction
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Abstract
Secondary rhinoplasty to address complications from initial surgical intervention is a technically challenging operation. Common aesthetic complications that plague patients after primary rhinoplasty include nasal tip asymmetries, bossae, and alar retraction. These adverse outcomes are usually a result of over-manipulation and/or over-excision of native cartilage and are especially prevalent in patients with thick lower lateral cartilages and thin nasal skin. Techniques to minimize tissue handling, maintain natural nasal anatomic support and structure, and soften sharp edges from cartilage grafts or incisions are all essential in the prevention of nasal tip irregularities. In addition to prevention, there are many operative and procedural interventions to correct tip asymmetries, bossae, and alar retraction. These interventional corrections include varying cartilage and/or fascial grafts, camouflaging of previously performed grafts, and repositioning of the alar cartilage.
Keywords
INTRODUCTION
Rhinoplasty is a complex operation referred to as the “queen of facial plastic surgery”[1]. Patients often seek rhinoplasty for a myriad of reasons, often driven by aesthetic aspirations, traumatic deformities, dissatisfaction with previous surgical outcomes, or the development of a new deformity after the initial surgery[2].
Differences in the nasal tip, a major subunit of the nose, can result in significant nasal obstruction and noteworthy undesirable nasal shape and appearance. As such, the intricacies of nasal tip surgery lie in its dual requirement of fulfilling aesthetic desires while preserving or enhancing nasal function. The delicate balance between these objectives necessitates a thorough understanding of the underlying anatomical structures and their interplay. Historically, ablative techniques incorporating reduction or division of the osseocartilaginous framework were used[2]. However, in recent years, there has been a shift toward preserving natural nasal anatomy. This has been achieved through cartilage-sparing techniques and by augmenting areas that lack volume in order to correct irregularities in shape and provide additional support[3]. The functional importance and aesthetic prominence of the nasal tip, therefore, warrants significant consideration before, during, and following any rhinoplasty. Whether through tip enhancement, reduction, or simply ensuring that tip support is maintained, every surgical approach to the nose must address the nasal tip.
Support for the nasal tip consists of the structure, shape, and attachments of the cartilage and soft tissue structures that are housed therein - namely the bilateral lower and upper lateral cartilages and the nasal septum. The complexity of the nasal tip support structures is reflected in the challenging, though rewarding, undertaking of tip reduction, enhancement, or repair. As the approach to the nasal tip is varied and intricate, nasal tip surgery is fraught with challenges. The pursuit of ideal nasal tip aesthetics can give rise to postoperative deformities such as nasal tip asymmetries, bossae, and alar retraction. These are all
METHODS
A comprehensive literature review was conducted to identify relevant data previously published on the causes, prevention, and treatment of nasal tip asymmetry, nasal bossae, and alar retraction.
RESULTS
A total of 66 articles were identified that offered high-quality data pertaining to the causes, prevention,
Nasal tip asymmetry
Nasal tip asymmetry can be defined as any noticeable difference between sides in the shape, size, or orientation of the nasal tip. While the nasal tip can certainly demonstrate natural asymmetry, prominent tip asymmetries are typically due to previous rhinoplasty. When performing revision rhinoplasty for tip asymmetry, it is common to find that the causes of such asymmetries were irregularly shaped or placed grafts, asymmetric and unequal cartilage excisions, and unbalanced suture correction of the lower lateral cartilages. Scar contracture and thin skin can also reveal asymmetries that were not readily apparent at the time of surgery. Sutures can also create unequal tension that will result in asymmetry, not necessarily intraoperatively, but months to years after surgery.
It is estimated that as many as 29% of patients seeking revision rhinoplasty note tip asymmetry as a major motivator for seeking secondary surgery[4]. Patients who have undergone revision rhinoplasty are more likely to be perceived as having an asymmetric nose compared to those who have only undergone primary rhinoplasty[5]. This finding illustrates the necessity of careful planning and the level of complexity faced when approaching nasal asymmetry correction with revision rhinoplasty.
Prevention
Given that various seemingly minor variations in technique can cause noticeable tip asymmetries, it is essential to carefully plan and meticulously perform all maneuvers that will affect nasal tip shape.
Any graft used in correction or support of the nasal tip can potentially contribute to nasal asymmetry if not properly placed or shaped. Correct placement and careful consideration of smoothing cartilage edges, especially in patients with thin skin, can help prevent nasal tip asymmetries. Shield grafts are sometimes used to help project and contour the nasal tip, but irregularly shaped shield grafts can cause a noticeable asymmetry in the nasal tip. Lateral crural grafts can help to smooth the edges of a shield graft, making them less noticeable. Using a curved piece of cartilage for the shield graft can help to preserve the infratip lobule[6].
Various materials and grafts can be used to help mask the firm, irregular edges of cartilage grafting that may contribute to nasal tip asymmetry. Perichondrium from either the ear or rib can be used to cover cartilage grafts to help smooth sharp edges and fill up empty spaces from previous rhinoplasty. In a case series of 62 patients, Boccieri et al. demonstrated the successful use of perichondrial graft harvested together with conchal cartilage to be used during revision rhinoplasty for the correction of nasal tip asymmetries[7]. Other autologous grafting material can also be used depending on surgeon or patient preference to cover and camouflage nasal tip reconstructions such as postauricular soft tissue, temporalis fascia, or fascia lata[8,9]. AlloDerm (AbbVie - North Chicago, Illinois, USA) has been used in the past for smoothing out the edges of cartilage grafts to prevent asymmetries, but the resorption rate has been found to be significant, and this has fallen out of favor[10].
Correction
Tip asymmetries can be due to an unwanted tip shape such as a boxy or overly rounded tip. In patients undergoing revision rhinoplasty, these tip abnormalities are more frequently caused by malpositioned, rather than orthotopic, lower lateral crura. Consequently, these tip asymmetries can be addressed via lateral crural repositioning or reconstruction with or without lateral crural strut grafts[11].
One strategy to reduce the delayed appearance of cartilage graft edges and asymmetries after postoperative edema has resolved, is to create a soft, moldable cartilage graft. This has been achieved through a diversity of described techniques, which include dicing, or finely mincing cartilage and then wrapping it in fascia or another tissue to create a moldable graft[12]. Erol has termed his specific technique as “Turkish Delight”, in which he wraps his thinly diced cartilage in Surgicel, so that the mold can better adapt to adjacent and enveloping tissues[13]. More recently, Tasman described using diced cartilage in tissue glue[14]. It is important to recognize that some common cartilage softening techniques are destructive to chondrocytes and can diminish the long-term viability of the grafts[15]. Crushing and shaving are most likely to damage the cellular structure of the cartilage[15].
Bracaglia et al. were able to correct nasal tip asymmetry in 18/20 revision rhinoplasty patients via the use of a rainbow graft[16]. This graft is explained in more detail as a method of correction of alar retraction.
Often, the nasal tip can appear asymmetric due to weak or unsupported lower lateral cartilages. A columellar strut graft, while frequently used for tip projection, can also be used as an anchoring point for weakened lower lateral cartilages. This can help to strengthen and support the structure of the nasal tip and correct the asymmetry of the lower lateral cartilages[3,17,18]. The septal extension graft is another graft typically used for tip support that can also help strengthen weak lower lateral cartilages and correct asymmetry by creating a more solid foundation[19,20]. Both the columellar strut graft and the septal extension graft, if not placed or shaped appropriately or covered with further grafting or other material, can cause nasal tip asymmetry.
Nasal bossae
Bossa is a Latin synonym of massa for “lump” or “bump”, with bossae being the plural form. True to their nomenclature, nasal bossae are sharp “knob-like” bumps of the lower lateral cartilage that can alter the external appearance of the nose. Bossae can occur as natural asymmetries of the lower lateral cartilages, though they are most frequently seen in the setting of previously performed surgery. Previous reviews have demonstrated that bossae may be present in as many as 3%-5% of patients who have undergone primary rhinoplasty[5,21,22]. As a surgical complication, bossae are thought to form from sharp, irregular cartilage edges that undergo scar contracture and form a pointed bump[23].
The timing of bossae determines size, structure, and difficulty in treating. Earlier bossae are usually simple irregularities in the cartilage that are appreciable through thin skin. Late bossae can form because of fibrosis or scar contracture of sharp cartilage and adjacent tissues. There have been some suggestions in the past of delaying bossae treatment until the irregularity is “fully declared”. However, bossae are unlikely to improve with time, and leaving them to develop typically leads to more scar formation, resulting in a more difficult correction, so it is suggested that these be addressed without any unnecessary delay[24].
Prevention
Bossae can be more noticeable in patients with thin skin over the nasal tip and thick lower lateral cartilages. Surgical technique that minimizes trauma and unnecessary manipulation, while always worth practicing, is especially important to use in these patients given their propensity to develop noticeable bossae.
Intralobular bifidity, defined as a widened interdomal distance, has been suggested as a significant risk factor for bossae formation because of the possibility of the domes becoming “knuckled”, which can lead to bossa formation[25]. Some authors suggest that vertical dome division techniques may present the risk of bossae formation[26], though this is controversial[21]. Many surgeons advocate for the reapproximation of the lower lateral cartilages with sutures to help prevent the widening of the domes to prevent bossa formation[6,24].
Cuts that create sharp cartilage edges, especially edges that face the external nasal skin, should be avoided. These sharp edges on grafts or native cartilage can be smoothed out intraoperatively to help prevent bossae formation, with care to not over-resect cartilage and sacrifice structural integrity in favor of smoothing out cartilage edges. Any maneuver that can cause the lower lateral cartilages to weaken and buckle, such as over-resection, can lead to bossae formation[6,24].
Surgical approaches that are more invasive, such as delivery via marginal and intercartilaginous incisions, are typically associated with more disruption of planes and handling of tissue that can increase the risk of bossae formation. Nondelivery approaches are less disruptive, but also have the disadvantage of not being able to easily address some deformities such as an increased interdomal width. The external approach allows for better visualization and may make it easier to ensure symmetry and smooth or covered cartilage edges to help prevent bossae formation[24]. During a primary rhinoplasty, the soft cartilage from a conservative cephalic trim can be used to camouflage potentially visible cartilage edges. Other camouflage materials such as soft tissue, perichondrium or diced cartilage can also be used.
Correction
Properly addressing bossae surgically necessitates the complete separation of a bossa from the attached soft tissue via undermining. This releases the scar and fibrous attachment that have helped to form the deformity and allows the cartilage irregularity to be addressed. Bossae can be carefully trimmed with careful suture reconstruction of the lower lateral cartilages[21]. Shaving down or complete excision of the bossa has been suggested in the past[27,28], but this has fallen out of favor due to the risk of weakening the underlying cartilage, which may lead to further complications or even recurrent bossa formation[24]. However, excision and reinforcement is a viable alternative. Covering materials used to camouflage the bossae, similar to those previously discussed regarding tip asymmetries, can be used to help address bossae as well. These materials can include fascia, perichondrium, or other soft tissue.
Injection of fillers into the nose over the top of bossae can help reduce the noticeability of sharp, asymmetric edges or irregularities in the nose. However, injection of fillers can lead to further asymmetry of the shape of the nose and carry the inherent risk of filler injection such as embolization and
Alar retraction
Excessive resection of the lower lateral cartilages can lead to alar retraction, an abnormal elevation of the mid-portion of the lower lateral cartilage that can give the appearance of perpetually flared nostrils. When viewing the profile of the nose, alar retraction also results in excessive columellar show. As many as 28% of patients undergoing resection of the lateral crus will suffer from unfavorable alar retraction[34]. Alar retraction has been documented as the most common complication of rhinoplasty in the Asian nose, so special consideration for the management of the lower lateral cartilages should be given to patients of Asian ethnicity[35].
Alar retraction can also violate the appropriate function of the external nasal valve, causing dynamic nasal obstruction. The prevention and treatment of lower lateral cartilage malpositioning can improve aesthetics as well as nasal breathing[36]. It is possible to improve the patency of the nose without detrimentally affecting the appearance[35].
Prevention
Surgical etiologies of alar retraction include excessive resection of the lower lateral cartilage, improperly placed sutures to manipulate the shape of the lower lateral cartilage, and contracture due to scarring. When performing trimming of the lower lateral cartilage, it has historically been suggested that leaving at least
Figure 1. Historical guidance was to leave a minimum of 6 mm of width (orange lines) to the lateral crus after performing a cephalic trim. This type of trim can leave a structural void between the upper and lower lateral cartilages, leading to alar retraction. It can also sufficiently weaken the cartilage longitudinally, predisposing to buckling of the cartilage and bossa formation. The senior author prefers a more medially placed cephalic trim, which preserves most of the structural integrity of the lateral crura (blue lines). This type of trim will permit reorienting the short axis of the lateral crus, flattening its shape and decreasing the volume in the supratip, moving the supratip break closer to the tip defining point.
When considering the necessity of cephalic resection, simple repositioning of the lower lateral cartilages may be an effective alternative and has been shown to result in a significant lowering of the alar rim even without additional grafting[40]. To ensure that the function of the external nasal valve remains intact with repositioning of the lower lateral cartilage, it can be helpful to draw a line that represents the long axis of the lateral crus. For optimized external nasal valve function, this long axis should point at the lateral canthus when secured in the corrected position[41].
Appropriate handling and manipulation of the soft tissue and vestibular skin overlying the lower lateral cartilages is also essential in preventing alar retraction. Because the soft tissue envelope is comprised of skin, subcutaneous fat, and the superficial musculoaponeurotic system (SMAS), its thickness can vary between patients[42]. While a healthy soft tissue envelope may be freely mobile in many cases, patient age, gender, ethnicity, and prior trauma or surgery may impact its general laxity[42,43]. These variables may impact the soft tissue envelope in which the alar cartilage is contained and may not always be amenable to stretching. This restriction can even result in minimal scar contracture from surgical intervention, leading to appreciable alar retraction. The pyriform ligament, attaching the pyriform rim to the lower lateral cartilage, must also be considered, and usually released, when approaching malpositioned crura in need of repositioning or grafting[44].
Alar contour grafts are often thought of as a first line in correcting alar deformities but can also be an effective method of preventing this complication in patients who are at high risk for alar retraction. In a controlled retrospective study comparing patients who received alar contour grafts and those who did not in primary rhinoplasty, Unger et al. not only found significantly reduced rates of alar retraction in the alar contour graft group, but also found improved alar aesthetics in general[45]. Additionally, there was no complication in this series associated with graft placement, suggesting that alar contour grafting may be a low-risk option during primary rhinoplasty to not only prevent alar retraction, but also to improve the aesthetic appearance of the nasal ala.
Correction
Every rhinoplasty surgeon should have a repertoire of lower lateral cartilage grafts that can be employed to address alar retraction. The shape of the lower lateral cartilages, the severity of the retraction, and the availability of donor cartilage may all influence which type of grafting is used to correct alar retraction. When placing lower lateral cartilage grafts, it is helpful to create a dissection pocket to hold the graft that is closer to the vestibular skin than the external skin, which may help to prevent the graft from becoming visible externally or displacement of soft tissue into the vestibule[37]. Regardless of the type of graft used, both the form and function of the nose need to be considered with any manipulation or adjustment of the size, shape, or position of the lower lateral cartilages.
Already mentioned in the setting of prevention, a common “workhorse” for correction of mild alar retraction is the alar contour graft. Alar contour grafts consist of a thin, 2-3 mm strip of cartilage that is used to reinforce and reshape the caudal edge of the lower lateral cartilage where the retraction has occurred. However, this graft may not be as effective in treating more severe notching or in a case with significant scarring, leading Boahene et al. and Rohrich et al. to suggest against its use in these scenarios[46,47].
For mild retraction in the setting of weak lower lateral cartilages, an alar batten graft can be used to help strengthen shape. This can be used in both treatment of mild retraction and prevention of postoperative retraction during primary rhinoplasty in patients who have notably weak alar cartilage[48].
Lateral crural strut grafts are used most frequently in approaching revision of the lower lateral crura. These grafts are secured to the underside of the remaining lower lateral crura and can help to reestablish stability of the lateral nasal wall while correcting asymmetry. Some authors, when faced with severe alar retraction and sagitally malpositioned lower lateral crura, employ lateral crural strut grafting and caudal repositioning for correction[49] [Figure 2]. This method can be helpful in reorienting the nasal base but should not be considered for mild or focal alar retraction that can be approached with a more focused correction. Cartilage grafts measuring approximately 25 mm × 5 mm × 1.5 mm are attached to the underside of the lower lateral cartilage remnants with 5-0 polydioxanone (PDS) sutures. Costal or septal cartilage is preferred over conchal cartilage for lateral crural strut grafts because the strength of cartilage from these donor sites allows for thinner grafts without sacrificing integrity. This graft is then placed in a pocket dissected in a caudal position compared to the original position of the lower lateral crura between the soft tissue envelope and vestibular mucosa[50].
Figure 2. (A) This patient had two prior rhinoplasties and was troubled by her tip bossae, asymmetry, irregularity, and alar retraction. She has bifidity of her tip with prominent domes. Note the pinching lateral to the domes that creates shadows between the tip and the alae. These areas should be supported by the caudal margins of the lateral crura. Operative notes indicated that a vertical dome division was performed at her initial surgery. No tip work was performed at her second surgery; (B) Note the structural void between the lower and upper lateral cartilages as a result of the cephalic trim. Approximately 8 mm of lateral crural width remained. There is buckling of the cartilage on each side lateral to the domes. Additionally, note the sagittal malpositioning of the shirt axes of the lateral crura. This not only narrows the external nasal valve but creates shadows lateral to the tip, making it look more bulbous. The right lateral crus was also cephalically malpositioned, contributing to her greater alar retraction on that side. The short and long axes are superimposed on the right lateral crus; (C) To correct these problems, the lateral crura were dissected from the vestibular skin and costal cartilage lateral crural strut grafts were placed. The long axes of the lateral crura were then repositioned more caudally to address the cephalic malpositioning; (D) Sutures were used to reorient the short axes of the lateral crura in order to correct the sagittal
In instances of severe alar retraction, it can become necessary to replace all or some of the lower lateral crura with septal or costal cartilage. In this scenario, it is essential to retain as much of the dome as possible, as reshaping this curved structure can be difficult and result in nasal tip asymmetry[36,51]. The articulated alar rim graft described by Ballin et al. has shown promising results in preventing and treating severe alar retraction[52]. In combination with septal extension grafting and lateral crural tensioning, the authors found total correction in 65% of patients undergoing revision rhinoplasty for moderate-severe alar retraction, and the other 35% demonstrated significant, sub-total correction[52]. This graft is secured to the underside of the nasal tip complex, as opposed to a traditional rim graft that is not structurally dependent or sutured to the tip complex[52].
In some patients, the alae are retracted due to cephalic malpositioning of the lateral crura. Repositioning them more caudally can provide the support needed to the alar rim[37].
The alar spreader graft has historically been used to correct pinched tip deformity but is another option when attempting to correct medialization of the lateral crus, a potential cause of alar retraction. Kim et al. suggest using alar spreader when simultaneously correcting alar retraction and an upturned tip[35,53]. In this scenario, both deformities can be addressed with the release of the nasal hinge and the scroll area, which helps to correct the upturned tip abnormality and simultaneously is a necessary step prior to alar spreader graft placement. Care needs to be taken to not spread or lateralize the alar cartilages too much, as this can result in a bulbous tip deformity.
The rainbow graft used by Bracaglia et al. in the correction of nasal tip asymmetry was also found to correct alar retraction in 16 of 18 revision rhinoplasty patients in their case series[16]. In patients with multiple tip deformities, a rainbow graft could be considered a viable option for reconstruction[17]. Comprehensive grafts have been attempted with varying success, including the nasal tip tripod graft, which has been shown as a useful technique in cases of severe tip deformity to reconstruct the entire nasal tip in one single structured graft[54].
In the most severe cases of alar retraction, there may be a deficiency of nasal lining. In these cases, composite grafting is a powerful technique that can replace the deficient soft tissue and cartilage with one graft[55]. Composite grafts for alar retraction are typically harvested from the cymba concha and placed into the defect created by incising the vestibular skin to release it.
Adjuvant therapy for revision rhinoplasty to help treat scar contraction may also be helpful in the setting of alar retraction. Ahn et al. demonstrated a cohort of 30 patients with nasal skin retraction who underwent revision rhinoplasty and were treated with several sessions of pre- and postoperative polydeoxyribonucleotide and invasive bipolar radiofrequency treatments. These treatments helped to release the tightness of the scar tissue from previous surgery and made revision surgery more accessible, with no patients suffering from persistent alar retraction or scar contracture following revision surgery[56].
DISCUSSION
In the words of Samuel Fomon MD, PhD, “He who masters the nasal tip, masters rhinoplasty.” The nasal tip remains one of the most important subunits of the nose to address in rhinoplasty. Each of the common nasal tip abnormalities and/or complications, tip asymmetries, bossae, and alar retraction, require deliberate consideration to prevent, and careful planning when approaching correction with revision surgery. Care should be taken during primary rhinoplasty to practice meticulous and deliberate surgical techniques to prevent these complications by preserving or augmenting the native structural integrity of the lower lateral cartilages. Repair is more difficult than prevention. While secondary rhinoplasty can present a surgical challenge, appropriately addressing patient concerns with revision rhinoplasty has been shown to improve health-related quality of life, which is rewarding for both the patient and the surgeon[57]. To better visualize the tip structure in vivo, revision rhinoplasty is often undertaken with an external approach[3,31,58].
As trends in modern rhinoplasty shift toward emphasizing minimal intervention for maximal function and aesthetic benefits, rhinoplasty surgeons must be familiar with minimally invasive approaches to nasal tip refinement. The endonasal approach can offer many advantages that abide by these modern rhinoplasty principles, as it offers preservation of nasal tip anatomy by minimizing external incisions and limiting direct dissection of nasal tip structures[59-61]. The minimally invasive nature of this approach not only limits the visibility of scars but also significantly reduces postoperative swelling and bruising, enhancing patient recovery times[62,63].
Additionally, preservation of the scroll area and Pitanguy’s ligament during endonasal rhinoplasty allows the surgeon to maintain the nasal tip’s natural contour and function, enabling retention of its natural dynamics and support[43]. Furthermore, rhinoplasty literature has demonstrated that many of the
In addition to the endonasal approaches, other modern techniques are gaining popularity in addressing nasal tip contouring in a minimally invasive manner. Hyaluronic acid filler injections to sculpt the nose have been suggested as a “Non-surgical rhinoplasty” technique for patients hoping to improve aesthetic aspects of their nose without the risks and/or costs associated with surgical intervention[64,65]. Surgical fat grafting has also been suggested as a less-invasive rhinofiller technique to approach boxy and asymmetric nasal tips and has shown favorable results. One case series demonstrated that compared to hyaluronic injection, fat graft injection as a rhinofiller for nasal sculpting resulted in longer-lasting favorable cosmetic results for patients[66,67]. However, given the need to harvest autologous fat for injection, fat grafting for a rhinofiller is a more involved surgical procedure and canbe less comfortable and more invasive for patients than hyaluronic acid injection[67]. While the more recent data are encouraging, it is unclear whether the positive results of hyaluronic acid or fat graft rhinofiller injections can be expected in post-rhinoplasty patients who are suffering from nasal tip complications secondary to their surgery. Additionally, the
This nasal tip complication analysis suffers from limitations inherent to many reviews focused on rhinoplasty data. Namely, most of the studies published for aesthetic procedures such as rhinoplasty consist of retrospective data, case series, or author techniques. Additionally, of note for this paper is an abundance of technique and review papers focused on alar retraction and nasal tip asymmetry and a relative paucity of data published on bossae, given the reduced incidence of this complication with more modern methods.
CONCLUSION
Despite these limitations, there exists a wealth of published experience and data among current and past rhinoplasty surgeons that should prove essential to any aspiring surgeon aiming to prevent and correct nasal tip deformities. When faced with myriad complication possibilities in rhinoplasty, it is essential for any rhinoplasty surgeon to have access to a plethora of surgical techniques to address the varied and distinct nasal tip abnormalities.
DECLARATIONS
Authors’ contributions
Performed the literature review and drafted the manuscript: Randall NR, Peraza LR
Performed the revision and the editing of the manuscript and the design and illustration of figures: Hamilton III GS
Availability of data and materials
Not applicable.
Financial support and sponsorship
None.
Conflicts of interest
All authors declared that there are no conflicts of interest.
Ethical approval and consent to participate
Informed consent has been obtained from patients.
Consent for publication
Written informed consent has been obtained from patients whose photos were used in this article.
Copyright
© The Author(s) 2024.
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OAE Style
Randall NR, Peraza LR, III GSH. Correction and prevention of tip asymmetries, bossae, and alar retraction. Plast Aesthet Res 2024;11:18. http://dx.doi.org/10.20517/2347-9264.2023.115
AMA Style
Randall NR, Peraza LR, III GSH. Correction and prevention of tip asymmetries, bossae, and alar retraction. Plastic and Aesthetic Research. 2024; 11: 18. http://dx.doi.org/10.20517/2347-9264.2023.115
Chicago/Turabian Style
Nicholas R. Randall, Lazaro R. Peraza, Grant S. Hamilton III. 2024. "Correction and prevention of tip asymmetries, bossae, and alar retraction" Plastic and Aesthetic Research. 11: 18. http://dx.doi.org/10.20517/2347-9264.2023.115
ACS Style
Randall, NR.; Peraza LR.; III GSH. Correction and prevention of tip asymmetries, bossae, and alar retraction. Plast. Aesthet. Res. 2024, 11, 18. http://dx.doi.org/10.20517/2347-9264.2023.115
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