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Ординатура / Хирургия / Библиотека им академика М.И. Перельмана / Книга_4366_Библиотеки_им_академика_М_И_Перельмана

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Chapter  Getting Rhinoplasty Right the First Time 165
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4. Restoration of the dorsal aesthetic lines
We have evolved a component approach to the dorsum that uses incremental manipulation to establish well-dened and smooth dorsal aesthetic lines while preventing undesirable dorsal deformities or internal valve collapse.
Release of the Upper Lateral Cartilages from the Dorsal Septum
Component dorsal hump reduction separates the dorsal hump into cartilaginous and bony components as well as separating the upper lateral cartilages from the septum and preserving the mucosa of the internal nasal valves.
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Resection of the Dorsal Septum Incrementally
e dorsal septum has a T-shaped orientation in cross-section.
Component dorsal hump reduction allows preservation of this cartilage attached to the dorsal edges of the upper lateral cartilages while the dorsal septum is re­duced. is cartilage along with the upper lateral cartilages can be resected in­dependently from the dorsal septum, or the upper lateral cartilages can be used as autospreader aps.
Rasping of the Bony Dorsum
Once the cartilaginous hump has been reduced, the bony hump is incrementally reduced using a rasp. Oblique strokes are used along the dorsal edges of the nasal bones. e dorsum should be constantly reevaluated to ensure a balanced reduc­tion and smooth transition between the bony and cartilaginous humps.
-
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Restoration of the Dorsal Aesthetic Lines
2-4 mm
Preservation of the upper lateral cartilages allows for reconstitution of the mid­vault and restoration of the dorsal aesthetic lines and internal nasal valve. Upper lateral cartilage tension spanning sutures are used to reconstitute the midvault. Preservation of the cartilage has decreased the requirement for spreader gras to reconstruct the midvault and internal valve. In primary rhinoplasty, indis­criminate use of spreader gras will lead to excessive midvault width, visibility/ palpability, and depletion of cartilage required for graing elsewhere.
Osteotomies
Superior oblique
osteotomy
Transverse fracture
Webster’s triangle
Frequently aer reduction of a dorsal hump, an open roof deformity is created with the superior dorsal aesthetic lines appearing excessively wide. Additionally, the bony vault may be wide or the nasal bones may be deviated. Lateral nasal os­teotomies should be used judiciously to correct these deformities.
-
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Percutaneous perforated lateral osteotomies are our preferred technique, because they have proved predictable and reliable for correction of the deformities dis­cussed.
-
is procedure involves discontinuous perforations made by a sharp mm osteotome along the lateral aspect of the bony pyramid, followed by green­stick infracturing performed with digital manipulation. e skin overlying the maxilla at the nose-cheek junction is perforated at the level of the infraorbital rim down to the subperiosteal plane, followed by a posterior sweep along the bone to push the angular artery away from the osteotomy line. Lateral nasal osteoto­mies will close the open roof and smooth out the superior dorsal aesthetic lines as well as the osteocartilaginous transition at the keystone area, and can adjust the width of the base of the bony vault.
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erefore the goal of dorsal hump reduction should be twofold: () to achieve an aesthetically pleasing lateral prole, and () to create smooth, symmetrical, well-balanced dorsal aesthetic lines on frontal view.
USE INVISIBLE GRAFTS
Whether for tip shaping or dorsal contouring, visible gras are commonly used in rhinoplasty. For many years, the use of visible gras has been part of the routine as a result of inadequate preoperative analysis and a lack of familiarity or con­dence with alternative techniques. However, there is no clear understanding of the long-term consequences of gras, including displacement, absorption, and changes to the overlying skin envelope.
Although gras are frequently required during rhinoplasty, the surgeon should make an eort to use invisible gras. ese gras provide additional structural support and improve contour. Furthermore, invisible gras decrease the long­term consequences associated with visible gras because of changes in the gra itself or the overlying so tissues.
We frequently use the following gras during primary rhinoplasty:
1. Columellar strut gra
2. Alar contour gra
3. Anatomic cap gra
4. Morselized onlay gra
5. Spreader gra
Although gras are frequently required during rhinoplasty, the surgeon should make an eort to use invisible gras.
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Columellar Strut Gra
Columellar strut gras are used frequently with the open approach. Columellar strut grafts have long been employed as a means to increase nasal tip pro­jection.
In our recent study  consecutive patients who underwent primary rhinoplasty with the use of a columellar strut were analyzed. of preoperative and postoperative photographs, % of these patients actually lost tip projection despite the use of a oating columellar strut. As opposed to increasing tip projection, columellar strut gras appear to have more eect on maintaining tip projection and unifying the tip complex. Additionally, the colu­mellar strut gra can add support when the medial crura are weak.
-
,
Based on computer analysis
ere are several specic nasal morphologies that benet from the additional support gained by placing a columellar strut gra:
1. e hanging tip
2. e dynamic tip
3. e tension tip
4. Alar-columellar discrepancies with columellar retraction
5. Irregularities of the medial crura
6. e aging nose
Alar Contour Gra
e lower lateral cartilage is the structural cornerstone for the alar rim and over­all tip support. However, it is the strength, anatomic positioning, and orienta­tion of the lateral crus that are paramount to the location, contour, and stability of the ala. External valve collapse, notching, and retraction can all become ap­parent when the lateral crus is unable to provide proper support for nasal so tissues that become further stressed with inspiratory eort. In patients with alar rim collapse or weakness, the so triangle appears notched from lack of under­lying cartilaginous support.
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For the past two decades we have used alar contour gras as a simple yet eec­tive rhinoplasty technique for improved contouring of the alar rim; this involves nonanatomic insertion of an autologous cartilage gra into a pocket along the alar rim. e alar contour gra provides a foundation for reestablishment of a normally functioning external nasal valve and an aesthetically pleasing nasal tip and alar contours. e use of alar contour gras decreases the risk of alar de­formities including alar notching or retraction, as well as excessive concavity or convexity of the alar rim.
More recently, the extended alar contour gra has been used to prevent notch­ing of the anterior alar rim where the lateral crus begins to diverge from the alar rim as it courses to the piriform aperture. Additionally, the extended alar con­tour gra can inuence the rotational orientation of the lateral crus so that the caudal and cephalic borders are rotated into the same horizontal plane, further inuencing the tip and alar contours.

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Anatomic Cap Gra
Visible tip gras used to be a mainstay of tip shaping during rhinoplasty. How­ever, with the widespread use of tip-suturing techniques and their versatility, we use visible tip gras much less oen. Instead, if a small degree of tip contouring or volume augmentation is desired aer tip suturing is completed, an anatomic cap gra can be used.
,
Cartilage resulting from the cephalic trim of the lower lateral cartilage can be used to fashion an anatomic cap gra. is cartilage gra is typically thin and pliable, so it contours over the tip very well, and it does not have any distinct edges, so palpability and/or visibility of the gra is not a problem.
Morselized Cartilage Onlay Gra
Morselized cartilage graft
Extended alar
contour grafts
In areas that require minimal augmentation or improvement of mild irregulari­ties of the osteocartilaginous framework, morselized cartilage onlay gras can
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be placed. e cartilage is morselized in a cartilage crusher and can range from being slightly bruised (to make it less rigid and more conforming without sharp edges) to crushed into a thin sheet (that can act as a scaolding for tissue in­growth). Morselized cartilage onlay gras can be used anywhere for augmenta­tion or correction of mild irregularities. We have most commonly used it as a tip gra or along the dorsum for dorsal irregularities.
Spreader Gra
Spreader grafts
Spreader gras are used to reconstitute the dorsal aesthetic lines, correct dor­sal deviation, enhance nasal length, and reconstruct the internal nasal valves. Preservation of the cartilage has decreased the requirement for spreader gras to reconstruct the midvault and internal valve. In primary rhinoplasty, indis­criminate use of spreader gras will lead to excessive midvault width, visibility/ palpability, and depletion of cartilage required for graing elsewhere. Spreader gras should only be used when necessary. We most commonly use unilateral or bilateral placement of spreader gras for correction of dorsal deviation or re­construction of the internal valves.
THE BEST CHANCE TO GET THE RESULT IS DURING PRIMARY RHINOPLASTY
Primary rhinoplasty oers the surgeon a unique opportunity to manipulate un­disturbed tissue planes and native anatomy to produce a result that meets both aesthetic and functional goals. It is during this rst nasal surgery that the op­portunity to achieve the best result exists. Subsequent procedures are technically more dicult and less predictable for a multitude of reasons. Scarring within the nasal so tissue envelope can create irregularities, brotic and inelastic skin, and thinner or thicker skin in certain areas. Alterations in the underlying osteocar­tilaginous framework during previous surgery leads to the potential for inad­equate structural support. Cartilage is oen required during secondary rhino­plasty; however, adequate cartilage for graing may no longer be available in the
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nose, necessitating harvest from remote sites, including the ear and ribs. Finally, and what is most important, the patient’s emotional state is oen quite dierent when presenting for primary versus secondary rhinoplasty. In many instances, the patient requiring a secondary procedure is upset over his or her previous surgery, and this may result in challenges establishing trust, which is critical to the doctor-patient relationship.
Primary rhinoplasty oers the surgeon a unique opportunity to manipulate un­disturbed tissue planes and native anatomy to produce a result that meets both aesthetic and functional goals. It is during this rst nasal surgery that the op­portunity to achieve the best result exists.
FOLLOW PATIENTS LONG TERM
Expertise and experience are gleaned from critical analysis of one’s own results. We learn through analyzing factors that play a role in a successful rhinoplasty. We learn even more from shortcomings or failure to achieve the desired goals of surgery.
Looking back critically at a -year experience with primary rhinoplasty, the goals of surgery were more frequently met as more experience was gained:
First  years Next  years Last  years Actual revision rate
Could revise %
Could revise %
Could revise %
.%
e results of certain techniques were maintained over the long term, whereas others did not hold up well over time. By critically examining our long-term re­sults, we have found that the early results using visible gras had the potential to develop late deformities from changes in the gra themselves or their dis­placement. Additionally, techniques that preserve cartilage when possible and/ or provide additional structural support, such as columellar strut gras and alar contour gras, improve longevity of the result aer rhinoplasty. Our approach has evolved to apply the information gathered from these observations to provide increased consistency and longer durability in results aer primary rhinoplasty.
Expertise and experience are gleaned from critical analysis of one’s own results. We learn through analyzing factors that play a role in a successful rhinoplasty; what is more important, we learn even more so from shortcomings or failures to achieve the desired goals of surgery.