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Ординатура / Хирургия / Библиотека им академика М.И. Перельмана / Книга_4420_Библиотеки_им_академика_М_И_Перельмана

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68 / Secondary Rhinoplasty with Total Lobular Reconstruction
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nasal bones can be corrected 3–6 months postop­eratively; however, it is best in all cases to be patient and let more edema resolve. A good rule of thumb is to wait at least 6 months to correct any pyramid abnormality. Although Webster usually waits 3 years to perform revision surgery of the nasal tip, many issues that show up in the first year can be corrected
Figure 6-2. Frontal view of a patient with visible alar
batten grafts requiring revision.
after one year of healing, at which time the scar tis­sue of the nasal lobule has softened, allowing the
surgeon to perform the secondary procedure. rhinoplasty or a secondary revision procedure, to be honest and straightforward with the patient in the consultation, outlining the likelihood that a secondary or revision surgery may be required to gain the best long-term aesthetic and functional result. Forthrightness with the patient in the pre­operative consultation prepares the patient for the possible need for revision and makes the patient more likely to retain confidence in the primary sur­geon, allowing the surgeon to perform the revision and keep a satisfied patient. However, if a patient is left to assume that one operation will achieve the desired result with no need for revision surgery, when a small postoperative deformity occurs, the patient may lose confidence in the primary surgeon and begin shopping for another surgeon to correct an otherwise good and normal postoperative result.
The timing of revision surgery is extremely important and the patient needs to know this in advance as well. Webster reports that many patients
may be able to determine whether the patient’s nasal tip is ready for revision surgery by palpating the tip. If the tip is firm and unyielding, then revision sur­gery should be postponed. Premature attempts at revision surgery may result in improper diagnosis, unnecessary surgery, or increased postoperative scarring. The difficulty of even elevating the skin envelope may preclude what could be an otherwise satisfactory operative procedure. It is incumbent upon the surgeon to follow the rhinoplasty patient at intervals of 1 month, 3 months, 6 months, and 1 year. Between 1 and 3 months, if one palpates thick­ness developing in the supratip area due to scar­ring, thickness of the nasal skin, or the like, one can intervene by injecting intralesional steroid, such as Kenalog 10 mc/cc. Up to 0.1 cc can be placed once or twice to resolve the developing fibrous tissue and gain the expected tip definition. The steroid reverses the formation of the fibrous tissue and forestalls the
need for revision surgery in the future. request revision surgery well before they attain their final result from the first surgery.
3
It is this author’s
for revision lobular reconstruction are: experience that patients may, in fact, begin indicat­ing that they are going to need revision surgery as
1. Failure to diagnose and to correct by tip­early as 1–3 months postoperatively, despite their having being counseled in advance that it takes nearly a year to be able to appreciate the final results of the primary surgery. The final contour of the upper third of the nose can be seen relatively soon after surgery, but even irregularities of the nasal pyramid may show up after 6–9 months of heal­ing. Palpable irregularities may be identified but are
2. Lack of identification of the tip-support mecha­not visible until the edema resolves. No only does it take a year for changes in the nasal tip to show up, but also in many cases nasal tip irregularities
3. Over-resection of the alar cartilages and/or the or asymmetries may not show up until years later. Occasional contour irregularities of the nasal pyra-
4. Failure to recognize inherent weakness or anato­mid, particularly in the midnasal vault, do not show up for 3–5 years postoperatively if the middle nasal vault has not been supported (Figure 6-3). Irregu­larities of the upper third of the nose, particularly ones related to incomplete osteotomies or faulty
3
One
12
To summarize, the five most common reasons
sculpting techniques the pre-existing displeasing and disharmonious preoperative appearance of the nasal lobule. Failure to adequately correct the aesthetic deformities of the medial and lateral crura as well as caudal septum can result in an only marginally improved result and a dissatisfied patient.
nisms and failure to reconstitute and/or recon­struct these vital lobular supports.
caudal septum.
mical deviations, such as cephalic malposition of the alar cartilages, leading to the long-term results of recurvature of the alar cartilages into the nasal airway, external valvular collapse, and alar retraction.
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A B
Figure 6-3.
4 years after hump-reduction rhinoplasty with middle nasal vault narrowing corrected by placement of spreader grafts.
5. Failure top account for skin thickness or thinness in performing proper surgical techniques so as to prevent abnormalities (such as the “shrink wrap phenomenon” or an amorphous nasal lobule created by extremely thick skin).
Frontal view of patient
CD
Indications for Revision
Nasal Surgery
Abnormalities, Irregularities, or Deformities of the Nasal Bony Pyramid
1. Residual bony hump or bump
2. Over-resected bony dorsum
3. Collapse of rhinion with saddle deformity
4. Dorsal bony ridge
5. Open-roof deformity or depression
6. Incomplete osteotomy that has left the nasal pyramid too wide, angulated, overly narrow, or with a step-off deformity
Deformities of the Midnasal Vault
1. Persistent curvature or deviation of the dorsal nasal septum
2. Curved or crooked nose with collapse or depression of upper lateral cartilage
3. “Pinched look” with “hourg lass deformity” secon-
dary to retracted and collapsed upper lateral cartilages
4. Under-resection of cartilaginous dorsum with residual hump and/or “pollybeak” deformity
5. Supratip saddle deformity
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Overly Short Nose/Over-Rotated Nasal Lobule (see also Chapter 7, “Lengthening the Short Nose”)
1. Irregularities, asymmetries, warping, absorption, or infection of dorsal nasal grafts and/or implants
2. Abnormalities/asymmetries of grafts of the nasal lobule
3. Over-projected nasal tip
4. Under-projected nasal tip
5. Under-rotated nasal lobule
Indications for Total Lobular
Reconstruction
Problems to be resolved in lobular reconstruction include:
1. Asymmetries of the tip
2. Asymmetries of the ala
3. Unusual bossa
4. Alar-columellar disproportion
5. Alar collapse and retraction
6. Over-rotation of the nasal tip
7. Under-projection of the nasal tip
entire nasal lobule, then can be accomplished in a bimanual fashion under direct vision.1 This ensures not only the position of the grafts but also the restored fibrous and structural support to the lobule.
Execution of the open approach using the exter­nal columellar incision is somewhat different than in primary rhinoplasty. The same marginal incision is made and then is connected to an external columel­lar incision. The elevation of the flap is much more difficult and may be tedious because of adherence of the skin envelope to the alar cartilages after hav­ing been elevated in the primary surgery. Careful and meticulous attention to elevating the skin enve­lope following the contours of the existing nasal ala is imperative so as not to perforate the skin while elevating the skin cephalically. Whatever approach is chosen for revision rhinoplasty, one must under­stand that it is only the approach, not the technical methods used, that allows one to diagnose accurately the deformities requiring correction and the per­formance of the multitude of techniques required to achieve a satisfactory aesthetic and functional result.
Systematic Approach to Defects
Surgical Approach to the Nose
The surgical approach to be used in revision or secondary lobuloplasty is dependent upon the severity of the aesthetic and functional deformi­ties identified. Although occasional minor aesthetic deformities can be corrected using “closed” endo­nasal approaches, creating pockets for grafts, closed approaches are usually used either for camouflag­ing concavities or deformities or for providing alar batten support to a collapsed ala. Closed approaches can use either intercartilaginous incisions or mar­ginal incisions. The incisions may be used to trim excess cartilage, to rasp an irregularity of the nasal pyramid, or to place specific grafts either as onlays to the pyramid or in precise pockets in the nasal lob­ule. In most cases, precise pocket grafting is designed to camouflage deformities and is not intended to reconstruct the existing primary structural defect.
In secondary rhinoplasty for major aesthetic and functional problems due to structural deformities, the open or external columellar incision approach is most commonly utilized, to provide excellent expo­sure, easier elevation of the lobular skin envelope, and accurate diagnosis of defects from the previous surgery. Direct placement and suturing of appro­priate grafts, either to the middle nasal vault or the
Nasal defects seen in secondary rhinoplasty can be categorized into two major types, incomplete pri­mary nasal defects and over-reductive nasal defects. Incomplete primary nasal defects are the result of inadequate surgery performed during the previous nasal operations(s). Correction of these deformities usually requires additional tissue excision or reo­rientation of tissues. Over-reductive nasal defects usually result from previous over-resection of sup­portive structures, causing deformity. Correction of these deformities usually involves cartilage grafting to replace over-resected supportive structures and to create improved contour. In many cases, septal cartilage is not available, necessitating the harvest­ing of auricular cartilage.
Incomplete Primary Nasal Defects
Overly Bulbous or Wide Nasal Tip
The overly bulbous or wide nasal tip usually results from inadequate volume reduction or improper choice (or execution) of the tip-narrowing tech­nique. In some cases, a thick skin/subcutaneous tis­sue complex acts as a limiting factor and may result in a persistent bulbous tip. Excessive scar formation may compound the problem. Failure to correct an obtuse angle between the medial and lateral crura
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(domal angle) will result in a persistent bulbous
or wide nasal tip. Correction of this deformity
using cephalic reduction alone may result in exces-
sive resection of lateral crura. Correction usually
requires a technique that will narrow the domal
region (create a more acute domal angle) and cor-
rect excessive interdomal distance. A graduated
approach, beginning with an interdomal suture and
ending with dome division, can be used.
13
In addi­tion to narrowing the domal region, the vertical height of the lateral crura may need to be reduced. However, in most noses previously operated on, there is little need for further volume reduction. All of these maneuvers can be performed through a delivery approach (bilateral chondrocutaneous flaps), but the open approach may allow more accu­rate diagnosis and symmetric execution of the cor­rective techniques.
Under-Projected, Under-Rotated Nose
The ptotic nose is usually a result of iatrogenic loss of support of the medial crural component (for
example, buckling of the medial crura) of the lower lateral cartilages, or inadequate correction of overly­ing long lateral crura that are pushing the nasal tip down. To correct the deformed medial crura, a car­tilage strut can be sutured between the medial crura to provide support, correct buckling, and lengthen
14
this leg of the alar cartilages.
If the lateral crura are overly long, they can be shortened by dividing them laterally and either resecting a segment of cartilage or overlapping in a lateral crural flap over­lay technique (Figure 6-4). The lateral crural flap overlay technique provides additional support and strength to the lateral crus while rotating the lobule cephalically.15 This is a very powerful maneuver that can create upward rotation and correct the ptotic nose deformity, but it may also de-project the nasal lobule, and one needs to account for this as well. Further plumping of the nasolabial angle may be required to improve the aesthetic relationship of the nose to the upper lip. Tip grafting may be required to increase the height of the tip projection, in addi­tion to the upward rotation.
A
BC
Figure 6-4. (A) Artist illustrative view of lateral crural flap overlay. (B) Intraoperative photos of the lateral
crural flap overlay.
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AB
Figure 6-5. Pre- and
postoperative lateral views of a patient with postoperative over-projected nasal tip.
Persistent Over-Projected Tip
A persistent over-projected tip results from inaccu­rate anticipation of postoperative changes. In some cases, the cartilaginous dorsum settles lower than one anticipates, leaving the tip relatively over-projected (Figure 6-5). Additionally, tip retroprojection after a transfixion incision may be inadequate because of strong, overly long, medial crura. In such cases, the first maneuver to decrease an overly long medial crura is to perform a Lipsett procedure. be a medial crural excision with direct suturing and lowering the height from 1 to 3 mm, leaving the nasal
16
This can
dome intact, or, as performed similarly for the lateral crura, the medial crural overlay technique can be used in suturing the transected intermediate crura upon itself in a mattressing fashion, directly decreasing the projection (Figure 6-6). If this maneuver does not produce enough reduction of the overly projected nose, one may find it necessary to perform domal
17
truncation, lowering the domes directly.
One must take into consideration the thickness of the nasal skin and soft tissue, and overlay grafts may be required to cushion the sharp edges left by performing domal truncation.
ABC
Figure 6-6. (A) Drawing of Lipsett maneuver with intraoperative photo. (B) Pre- and postoperative views of a
patient with persistent over-projected nasal tip corrected by Lipsett maneuver.
Figure 6-7. Preoperative lateral
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view of a patient with pollybeak deformity and postoperative view of revision.
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AB
Pollybeak Deformity with Adequate Tip Projection
Pollybeak deformity usually occurs because of inadequate reduction of the cartilaginous dor­sal profile and over-reduction of the bony profile (Figure 6-7). It may also occur because of excessive postoperative edema and scar tissue formation in the supratip area. This is more common in patients with thick nasal tip skin. If a cartilaginous pol­lybeak exists, the excess cartilage of the nasal dor­sum, particularly in the region of the anterior nasal spine, can be resected through an intercartilaginous incision, correcting the deformity immediately. If a soft-tissue pollybeak occurs because of exces­sive postoperative edema, triamcinolone acetonide (Kenalog, Westwood-Squibb, Buffalo, NY, 10 mg/ ml) can be injected into the subdermal tissues of the supratip. tissue excision may need to be performed through an intercartilaginous incision or the open approach. When performing soft-tissue excision, the muscle layer of the skin flap should be left intact to avoid excessive edema, scarring, or possible flap necrosis.
1,18
If these injections are not effective, soft-
Alar-Columellar Disproportion and the Hanging Columella
This deformity is usually the result of alar retrac­tion, caudally protruding medial crura, caudally protruding nasal septum, or a combination thereof (Figure 6-8). The open approach can be used if the caudal margin of the medial crura needs to be
reduced, although marginal incisions may be ade­quate. Trimming the caudal margin in the medial crura will result in only subtle changes in the alar­columellar relationship, and in most cases some other maneuver must be performed to correct this deformity. First, if palpation of the caudal septum reveals an overly long caudal septum, the caudal septum may be shortened to allow the columella to occupy a more cephalic position. Excising the membranous septum is required, which will assist in suturing the hanging medial crura back to the septum, correcting the aesthetic deformity. If the medial crura themselves are quite curved, they may need to be divided directly and then sutured back to the caudal septum, straightening the columella aesthetically, improving the alar-columellar propor­tion, and diminishing the columellar show. If alar retraction is the persistent issue affecting the alar­columellar harmony, correction of the alar retrac­tion is needed (this is covered in the section on over-reduced nasal defects).
Wide Nostrils and Alar Base Flaring
Overly wide or flared nostrils may tarnish an otherwise aesthetically pleasing rhinoplasty result (Figure 6-9). Failure to anticipate the amount of postoperative loss of tip projection may result in flared nostrils as the tip settles in the first 3 to 6 months after surgery. The treatment for this deformity is alar base reduction or nostril narrow­ing if tip projection is acceptable. If tip projection is inadequate, the tip can be re-projected, possibly eliminating the need for alar base modification.
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Figure 6-8. Pre- and
postoperative lateral and oblique views of a patient with alar­columellar disproportion and after revision surgery.
Figure 6-9. Pre- and
postoperative basal views of a patient with residual flared nostrils corrected by alar base narrowing.
Figure 6-10. Pre- and postoperative frontal
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views of a patient with asymmetrical, very visible bossae secondary to complete resection of the lateral crura.
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Over-Reduced Nasal Defects
Bossa Formation of the Nasal Tip
Bossae are knob-like protuberances in the dome region that usually occur due to over-resection of lower lateral cartilage near the domes8 (Figure 6-10). Bossae occur in both intact and interrupted strip techniques. They are one of the most common com­plications of cartilage-splitting or retrograde (intrac­artilaginous) approaches inappropriately performed in patients with thick cartilages, wide interdomal distance (bifidity), and thin skin.4 The deformity tends to worsen over time as scar contracture exerts its forces on the weakened domal cartilage strip. Treatment of bossae can be performed through a delivery or open approach. Once the domes are freed of the surrounding soft tissues, cartilaginous asym­metries are corrected either by suturing the domes together with a 5-0 clear polypropylene suture or by camouflaging the asymmetries with an onlay graft. If excessive cartilage has been previously resected, soft auricular cartilage alar grafts can be sutured as batten grafts to stabilize the lower lateral cartilages. A small (morselized) cartilage graft or a sutured-in­place shield-shaped tip graft can be used to cam­ouflage the domal region and provide additional
19
support
(Figure 6-11). The open approach pro­vides excellent exposure for accurate suture fixation of grafts placed in the domal region.
Secondary Rhinoplasty for
Correction of Errors of Commission
Errors of commission are the most common prob­lems encountered in secondary rhinoplasty practice.
The final surgical result often is the consequence of a combination aggressive reduction rhinoplasty with destabilization of the nasal lobule as well as inadequate resection in other areas, making the diagnosis challenging. For example, a nose with a pollybeak deformity may be a saddle nose deform­ity of the bony vault due to over-resection of the bony dorsum in combination with under-resection of the cartilaginous supratip dorsum and loss of tip projection (Figure 6-12). As mentioned pre­viously, abnormalities in the pyramid can range from as small a problem as visible ridges or small bumps that show up several months to a year postoperatively. Treatment of these problems is fairly straightforward and can be done through an endonasal approach with direct shaving of the cartilage or use of a rasp. The addition of slightly crushed cartilage as a camouflage onlay may be beneficial. Disharmonious width or asymmetric nasal bones are the next most common abnormal­ity of the nasal pyramid requiring minor revision. The nasal bones may be flared or the dorsum may be wide, both of which are easy to correct with com­pletion osteotomies. A combination of medial fad­ing osteotomies and lateral osteotomies is used to correct most deformities. A double osteotomy may be required on a wide, flared side to straighten the nose and produce symmetry. More rarely, a trans­verse root osteotomy is used to straighten the nose if it remains deviated from the nasion to the rhinion (Figure 6-13).
Correction of the overly narrowed dorsum or
open-roof deformity may be accomplished by the
20
use of spreader grafts and onlay grafts.
Onlay grafts
are very useful to fill in small open-roof deformities.
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A
B
Figure 6-11. Intraoperative photo with drawing of tip graft and alar replacement grafts.
Figure 6-12. Pre- and
postoperative lateral views of a patient with pollybeak deformity corrected with bony dorsal augmentation and reduction of residual cartilaginous hump.
Figure 6-13. Pre- and
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postoperative frontal views of patient with residual wide, deviated, nasal pyramid corrected by medial double lateral and transverse root osteotomy.
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A
B
Correction of saddle nose deformity requires augmentation with septal cartilage, rib cartilage, or alloplastic materials. Septal cartilage is the first choice, providing smooth, elongated cartilage for augmentation of the nasal dorsum. Ear conchal car­tilage can be used, but it is difficult to bevel and to keep flattened. It is also not as long as the full nasal dorsum if the entire dorsum is saddled.
Rib cartilage may be used for large saddle deformities requiring replacement of the complete nasal dorsum. However, in most cases, a combina­tion of conchal cartilage with an overlay of alloplas­tic material, such as Gore-Tex (ePTFE/expanded polytetrafluoroethylene) sheeting, provides an excellent cosmetic result and camouflages any irreg­ularities that may show up from the edges of the conchal cartilage.
21
Grafts used in Secondary
Rhinoplasty for Correction
of Dorsal Deformities
Preferred grafting materials in rhinoplasty include:
1. Septal cartilage
2. Ear conchal cartilage
3. Nasal fibro-fatty soft tissue
4. Crushed or morselized autogenous cartilage
5. Acellular dermal graft or temporalis fascia
6. Gore-Tex sheeting (1 mm or 2 mm)
7. Autogenous rib cartilage
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Harvesting of Cartilage Autogenous Grafts
The first choice for cartilage grafting material for any nasal reconstruction is autogenous septal car­tilage or autogenous conchal cartilage.21 This is particularly true for any reconstruction of the nasal lobule. Procurement of septal cartilage is done via septoplasty techniques, assuming there is adequate cartilage to be removed from the septum for graft­ing purposes and still maintain dorsal and columel­lar tip support.
As is the case with many revision reconstructive nasal procedures, there is often little or no quadran­gular cartilage to harvest.
The external auricle is the ideal place for obtain­ing cartilage grafts for nasal reconstruction. It is in the head and neck area and does not require the sur­geon to move out of the operative region. The carti­lage is easily obtainable with minimal to no sequelae or deformity. Cartilage from one or both ears may be required for complete lobular reconstruction. If there is no need to correct alar notching or alar retraction, the entire cymba and cavum conchae can be obtained from the posterior approach 6-14). This is the senior author’s preferred approach because it is quick and efficacious and the scar is completely hidden. No scars are made anteriorly and the entire conchal cartilage can be removed for use in the nose.
When alar composite grafting is anticipated, however, conchal cartilage grafts may be obtained
1
(Figure