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4 Sinder’s Technique: AUseful andSafe Approach forAbdominoplasty
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Avelar JM (1999a) Abdominoplasty: new concepts for a new technique. (Abdominoplastia: Nuevos
conceptos para una nueva técnica). XXVI Annual International Symposium of Aesthetic Plastic
Surgery, Chairman: Prof. Jose Guerrerosantos, Puerto Vallarta, Mexico. Avelar JM (1999b) New concepts for abdominoplasty. (Novos conceitos para abdominoplas-
tia). Paper presented at the 36th Congress of the Brazilian Society of Plastic Surgery, Rio de
Janeiro, Brazil. Avelar JM (2000a) Abdominoplasty without undermining (Abdominoplastia sem descolamento).
São Paulo: XX Jorn. Paulista Cir Plast. Avelar JM (2000b) Abdominoplasty: a new technique without undermining and fat layer removal
(Abdominoplastia: uma nova técnica sem descolamento e remoção da camada de gordura). Arq
Catarinense de Med 29:147–149. Callia WE (1965) Contribuição ao estudo de correção cirúrgica do abdomen pêndulo e globus
(contribution to the study of surgical correction of the pendulum abdomen and globus). original
art. Doctoral Thesis Fac Med USP, São Paulo. Jolly R (1911) Die operation des Fettbauches. Berl Klin Wochenschr 29:1317. Pitanguy I (1967) Abdominal lipectomy: an approach to it through an analysis of 300 consecutive
cases. Plast Reconstr Surg 40:384–391 Pitanguy I (1974) Yabar AA, Pires CEB, Motta SR Aspectos atuais em lipectomia abdominal. Rev
Bras Cir 64(5/6):147–167. Pitanguy I etal. (1974) Aspectos atuais em lipectomia abdominal. Rev Bras Cir 64(4/5): 49–164 Sinder R (1975a) Plastic surgery of the abdomen– personal technique with prior undermining of
the supraumbilical ap– before infraumbilical resection and the use of the dermoadipose ap.
(Cirurgia Plastica do Abdomen– Tecnica Pessoal com prévio descolamento do retalho supra-
umbilical– antes da Ressecção Infraumbilical e uso de retalho dermoadiposo) VI Int Congr of
Plast and Reconstructive Surg, Paris, 25 Aug. Sinder R (1975b) Plastic Surgery of the Abdomen. Personal technique. In: Abstracts of the 6th
International Congress of plastic and reconstructive surgery. Masson, Paris, pp584–591. Sinder R (1975c) Use of a decorticated dermo-adipose  ap in abdominoplasty. Abstracts of the
sixth international congress of plastic and reconstructive surgery, Paris, 24–29. Sinder R (1979) Abdominal plastic surgery. (Cirurgia plástica abdominal) Ed. by Sinder, Niteroi.
Rio de Janeiro, Brasil. Thorek M (1942) Plastic surgery of the breast and abdominal wall. Ed. Charles C. Thomas,
Springeld. Vernon S (1957) Umbilical transplantation upward and abdominal contouring in lipectomy. Am J
Surg 94:490–492.
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Chapter 5
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The Beginning, Development, andCurrent Status ofLipoabdominoplasty: New Concepts forAbdominoplasty
JuarezMoraesAvelar
Abstract Ever since I started my professional activates in 1973, I noticed that there
were several elds in plastic surgery that needed technical improvements to solve multiple problems. In my opinion, abdominoplasty was one of those areas that required new surgical fundaments and other techniques to achieve better results and minimize complications.
At that time, I identied three essential topics that needed new surgical approaches for abdominoplasty: (1) the creation of a new umbilical region; (2) adiposities remaining in the silhouette of the body; and (3) the high incidence of local and sys­temic complications. I concluded that those three topics required new anatomic studies and new techniques to achieve better surgical, more-aesthetic results.
1. The creation of the new umbilical region was needed for the transposition of the
umbilicus and for other techniques that leave circular scars around the incisions, which may lead to retraction and contraction scars. To avoid circular scars, I developed a new method of making triangular incisions.
2. Remaining local adiposities were improved through the liposuction technique
introduced by Illouz which reshaped the body’s contouring. However, redundant skin after liposuction on the abdomen bothers patients and surgeons. My rst operations inspired me to consider two problems: (1) the unknown anatomy of the subcutaneous compartment and (2) the redundant skin of the abdominal wall after liposuction.
To study the anatomy of the abdominal wall, I performed dissections com­bined with liposuction on cadavers, which enabled me to describe the areolar and lamellar layers and the fascia supercialis between them. Concerning redun­dant skin after liposuction, I performed this combined procedure to remove it, and in this way, a new procedure was introduced.
J. M. Avelar (*) Brazilian Scientic Institute of Plastic and Reconstructive Surgery, São Paulo, Brazil
Switzerland AG 2023 J. M. Avelar, R. Cavalcanti Ribeiro (eds.), Body Contouring,
https://doi.org/10.1007/978-3-031-42802-9_5
87© The Author(s), under exclusive license to Springer Nature
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3. Complications after and during abdominoplasty, especially in combination with liposuction, remained great challenges. After my anatomical study, I concluded that I could combine those two procedures as long as the perforator vessels did not sustain damage during surgery. Therefore, I described and introduced a new technique, namely lipoabdominoplasty, which reduced complications and achieved smooth body contouring.
Keywords Abdominoplasty · Liposuction · Lipoabdominoplasty · Combined approach · Without undermining
J. M. Avelar
Introduction
When I looked back on 50 years of performing plastic surgery, I noticed that several elds still required technical changes to improve aesthetics of surgical results. At that time, I identied that abdominoplasty was one of the areas that had several complications that hampered achieving better surgical results. Among surgeries, abdominoplasty was one of the most complex and presented challenges to all plastic surgeons around the world.
The rst abdominoplasty was performed by Kelly (1899), which was the begin­ning of a long and rich history of such surgeries over the past century, followed by many other authors’ improving the aesthetic outcomes of surgeries on the abdomi­nal wall. Horizontal incisions were described by Malbec (1948), Callia (1965), Pontes (1965, 1982), Pitanguy (1967, 1977, 1982), Avelar (1976a, b, 1983a, b,
1985a, b, 1999a, b, 2000a, b), Guerrerosantos (1982a, b), Guerrerosantos et al.
(1980), Planas (1982), Sinder (1975, 1982), Hinderer (1982), and Cavalcanti and Cavalcanti (1982), among others. Vertical incisions were described by Babcock (1916). The circular approach was proposed by Gonzales-Ulloa (1959, 1982), Vilain and Dubousset (1964), and Vilain (1982). Submammary incisions were described by Thorek (1939), Rebello etal. (1972), and Rebello (1982). More recently, I intro­duced (Avelar 1999a, b, 2000a, b) a crescent-shaped skin resection on bilateral sub- mammary folds combined with liposuction to improve the aesthetics of upper abdominoplasty.
According to my analysis and reections, there have been three main complica­tions for every plastic surgeon: new ideas to add to basic techniques, new concepts for abdominoplasty, and more anatomical knowledge. In my opinion, surgical per­formance should minimize complications during and after surgery and improve the aesthetics of surgical results. In my practice, meeting these demands has been com­plex ever since I started my professional activities in 1973. These complications needed specic approaches to give plastic surgeons more enthusiasm for perform­ing abdominoplasty. The anterior abdominal wall is a specic anatomical structure that protects the internal organs and gives an aesthetic image to the human body.
5 The Beginning, Development, and Current Status of Lipoabdominoplasty: New…
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When performing any surgery on this area, remodeling the body’s contouring was a constant challenge.
Since the beginning of my practice, I have identied three essential topics that needed new surgical approaches for abdominoplasty: (1) the creation of a new umbilical region; (2) the remaining adiposities leaving behind an inelegant sil­houette of the body; (3) the high incidence of local and systemic complications. I concluded that those three topics required new anatomic studies and new tech­niques to achieve better surgical aesthetic results and minimize patients’ suffering.
1. In all cases of full abdominoplasty, a new umbilical area must be created because
the umbilicus is transposed to that new location (Vernon 1957). Ever since I started my professional activities, I have devoted considerable effort to trying to avoid leaving behind a nal circular scar around the new umbilicus, which was the nal result of every technique. Therefore, I developed a new method making triangular incisions around the umbilicus, similar to atypical Z-plasty (Avelar
1976a, b, 1978, 1979, 1983a, b). Following my procedure, the nal scar is not a
circular one, the aim of which is to avoid retraction and contraction, which them­selves may leave an inelegant appearance. Therefore, in my hands and publica­tions, one of the three main complications in abdominoplasty had been solved. My method was well understood and employed by other surgeons for the recon­struction of a new umbilicus (Lessa 1982), even as a routine approach during abdominoplasty (Daher 1982).
2. Remaining adiposities leave behind an inelegant silhouette of the body, but this
has been improved through the liposuction technique introduced by Illouz (1980,
1983a, b, 1984, 1986a, b), yielding better aesthetic results on body contouring.
After I went to Paris in early 1983 with the specic purpose of observing Illouz’s operations to learn his new technique, I noted two problems: rst, the unknown anatomy of the subcutaneous compartment where the cannulas worked during the liposuction procedure, and second, the redundant skin of the abdominal wall after liposuction.
3. The high incidence of local and systemic complications during and after abdom-
inoplasty were still great challenges to solve, as reported by Guerrerosantos (1982a, b), Guerrerosantos etal. (1980), D’Assumpção (1982), Mélega (1982), and Martins (1982).
When I observed Illouz’s operations and performed my rst liposuction opera­tions on the abdominal wall, I concluded that the cannula worked in an unknown compartment of the subcutaneous panniculus. Since the beginning, I decided to research the anatomy of this region by performing several anatomical dissections and liposuctions on cadavers to study the subcutaneous layers and the behavior of these tissues after liposuction (Avelar 1986a, b, c, 1987, 1989).
On the other hand, to treat the excess skin on the abdominal wall after liposuc­tion, I decided to simultaneously resect it. In this way, a new approach was
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J. M. Avelar
developed for abdominoplasty that became well understood by and earned the acceptance of plastic surgeons (Avelar 1985a, b, 1986b). A new eld was thus introduced: aesthetic surgery on the abdominal wall as a complementary proce­dure to solve the excess of panniculus after liposuction. However, liposuction on the submentonian and submandibular regions in patients without cutaneous ac­cidity, even in association with rhytidoplasty, did not present redundant skin after liposuction, or those complications arose after abdominoplasty (Avelar
1983b, 1985c).
The combined procedure of liposuction with resecting excess skin during abdominoplasty didn’t bring new kinds of complications, but the high incidence of seroma, the slough and necrosis of the panniculus, local infection, and hyperpig­mentation of the skin remained. In light of these frequent complications, after a short period of time, I made the radical decision to no longer perform such com­bined procedures (Avelar 1988). Over a period of 10years, I no longer combined both procedures during abdominoplasty, but rather, I returned to my previous ana­tomical research on the abdominal wall (Avelar 1986a, b, c, 1987, 1989), looking for a way to solve the problems stemming from this combination of liposuction with resecting the redundant skin of the abdominal wall. In my previous anatomical study, I described and recommended that liposuction should be performed primar­ily on lamellar layer (the deeper one) in order to preserve the perforator vessels during surgery (Figs.5.5d and 5.6d, e, f). This technical principle has been recom­mended ever since I described the anatomy of the abdominal wall. After 10years of reviewing my previous anatomic study and reecting on the aforementioned complications, I nally concluded that I could combine those two procedures simultaneously (liposuction and the resection of redundant skin of the abdomen wall) as long as the perforator vessels (arteries, veins, and lymphatics) did not sus­tain damage during surgery, thus avoiding dead space (Avelar 1999a, b, c, 2000a, b,
2001a, b).
All these surgical principles are part of an evolution in abdominoplasty where the perforator vessels work as multiple pedicles that provide adequate arterial blood supply to the remaining abdominal panniculus, preserve venous circulation and lymphatic circulation, and avoid seroma formation. Thanks to the perforator vessels and because there is no dead space around the abdomen, no internal suture from the panniculus to the aponeurosis is needed.
Therefore, I described and introduced new concepts to minimize complications during and after surgery and to improve the aesthetics of the surgical results. Such a combined procedure is called lipoabdominoplasty, for which I established new sur­gical principles after a long time as the result of my anatomical research into solu­tions for some of the perioperative and postoperative complications. So, my dream at the beginning of my career in 1973 became a reality. When liposuction was intro­duced by Illouz (1980, 1983a, b, 1984, 1986a, b), I proposed a combination of his new technique with traditional abdominoplasty to solve several complications dur­ing and after surgery (Avelar 1985a, b, 1986b).
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Technique
Surgical Planning: Classication
According to clinical evaluations and patient selections, the surgical planning for lipoabdominoplasty with reduced panniculus undermining may be classied in four types of operations: lower lipoabdominoplasty, upper lipoabdominoplasty, upper and lower lipoabdominoplasty, and full lipoabdominoplasty (which is described in Chap. X). Also, Erfon created a classication system that is an excellent guideline for reaching an adequate orientation before surgery (Erfon 2000). The subject of this chapter is restricted to full lipoabdominoplasty, through which all skin above the suprapubic region and below the umbilicus must be resected. In fact, the whole abdomen wall is treated, but the perforator vessels are not cut, because in my origi­nal descriptions (Avelar 1999a, b, c, 2000a, b), the remaining panniculus is not to be undermined. That is the main difference between my technique and the conven­tional abdominoplasty, where wide undermining is performed and all the perforator vessels are cut.
Surgeons must carry out a preoperative evaluation before planning any operation (Fig.5.1) to take an adequate measurement of the anatomical points at the location of the umbilicus, and the patient may follow the surgeon’s evaluation. The surgeon must hold the panniculus below the umbilicus and be sure that they can resect it and that the skin of the periumbilical area can reach the suprapubic incision. It means that the upper abdomen may be pulled downward to cover the entire area of the abdominal wall. Also, the surgeon should examine the patient in a standing position in this evaluation. I have mirrors strategically positioned in my examination room so that patients can see all the anatomical abnormalities in their bodies’ contours (Fig.5.2) (Avelar 1986a, b, c).
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Fig. 5.1 Pre-operatory examination and demarcation for full lipoabdominoplasty. Photo (a) patient in standing position the abdominal panniculus is held in order to evaluate its thickness on upper abdominal wall; (b) muscular diastasis is demarcated on each side of the rectus abdominalis and the infraumbilical area is pulled downwards to evaluate the possibility of its resection during operation; (c) the patient with a camera takes photo through a mirror placed on ceiling of the exam­ining room, following preoperatory examination and demarcation as well
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J. M. Avelar
ab
Fig. 5.2 A set of mirrors in the examining room at my clinic in order the patient can see herself or himself in frontal, posterior, and lateral view simultaneously. Photo (a) a diagram to demonstrate my examining; (b) photo of a patient in front of one vertical mirror and she can see herself in all sides
ab c
Fig. 5.3 Computerized tomography is a useful rotinaire exam before lipoabdominoplasty for con­rmation the surgical evaluation of patient presenting diastasis of the rectus abdominalis muscle on the umbilical region. Photo (a) before surgery showing diastasis of the rectus. The arrow indi­cates the fascia supercialis all around the abdominal wall; (b) same patient after operation with reinforcement of the muscular aponeurotic wall. The arrow shows the fascia supercialis is very close to muscular aponeurotic wall, however in supra iliac regions it is well preserved in the middle of the panniculus; (c) front view of TC showing diastasis of the rectus abdominis
The Operation
After completing the above steps, the surgeon might have enough information to choose the appropriate technique for lipoabdominoplasty. Each patient must present normal blood tests and must have undergone a fundamental clinical evaluation per­formed by physician that includes an electrocardiogram (ECG) and other specic exams, such as computerized tomography (CT), when they are necessary to evaluate the diastasis of the rectus abdominalis (Fig.5.3). A complete series of photos of the regions to be treated must have already been taken.
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Fig. 5.4 A 65-year-old patient underwent full lipoabdominoplasty following the technique described. Photos (a, b) mesurement and technical demarcations prior surgery; (c) after full lipoab­dominoplasty; (d) same patient in left oblique view; (e) after full lipoabdominoplasty with creation of the new umbilical region
Preliminary Demarcations
All my operations are performed at the hospital under epidural or general anesthe­sia, where patients stay for at least 24h. I prefer to demarcate the patient’s body the day before the operation. Because I have a useful set of mirrors, my patient can see and follow my demarcations (Fig.5.4). Patient should see their deformities once more, and surgeons must explain the relevant surgical details to them. The patient must stay in a standing position in front of the mirrors in order to follow my drawing on their body (Avelar 1986c). After a careful analysis, all the deformities are drawn. Two areas must be well demarcated: (1) the area for full-thickness skin resection where liposuction will be performed on the panniculus and the location of the nal scars and (2) the areas for deep liposuction (below the fascia supercialis) on the upper abdomen wall, the lateral sides, and the posterior regions (Fig. 5.4). Premedication is a matter of a routine and is prescribed by an anesthesiologist after a clinical evaluation has been completed before surgery.
Full Lipoabdominoplasty
Full lipoabdominoplasty is the most frequently performed procedure in abdomino­plasty; it is combined with liposuction and skin resection on the entire suprapubic region to repair abnormalities in the abdominal wall. In this modality of lipoab­dominoplasty, the umbilicus is transposed and a new umbilical area is created. Once again, the selection of patients before surgery is a fundamental step for the surgeon to evaluate whether to remove all the skin of the suprapubic region, and the cutane­ous area above the umbilicus may be pulled downward to be sutured to the inferior border of the surgical incision.
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J. M. Avelar
Surgical Demarcations During Surgery
Two areas must be well demarcated to reach an adequate orientation during surgery:
1. The area for skin resection corresponding to the whole segment on the suprapu-
bic region that is below the umbilicus needs demarcation. My preferred tech­nique for drawing is similar to Callia’s technique (Callia 1965). Therefore, the nal scar will be as small as possible where the lateral segment is placed on the inguinal folds on each side and a convex line is placed on the pubic area (Fig.5.4).
2. The area for liposuction on the abdominal wall above the umbilicus and on the
lateral and posterior aspects of the torso also need demarcation. Therefore, all deformities (localized adiposities and skin excess) must be drawn on the day before surgery.
Liposuction Procedure
The patient on the operating table stays in the supine position, and after anesthesia, the abdomen and lateral aspects of the torso are prepared. Before starting the lipo­suction procedure, local inltration with a special solution is carried out according to surgical planning. My preference of solution is a serum of 1000mL, plus 2mg of epinephrine—or 2mg per 1000mL. Usually, at this volume, the abdomen and lat­eral sides of the torso can be inltrated as well. The inltration is performed at two levels on two areas:
1. In all the regions where liposuction is performed, the inltration is deep (in the
lamellar layer, below the fascia supercialis)
2. In the area for skin resection, the inltration is carried out in the suprapubic
region underneath the skin and the full thickness of the panniculus (in the areolar and lamellar layers) (Fig.5.5).
After inltration, the surgeon should wait at least 15min before starting the lipo­suction procedure, which is performed at two levels in those two previously demar­cated areas:
1. Full-thickness liposuction is conducted on all the areas in the suprapubic region
and below the umbilicus (Fig.5.5). Afterward, the perforator vessels and con­nective tissues are preserved, and that area becomes deep because of the absence of adipose tissue (Fig.5.6).
2. Deep liposuction (below the fascia supercial) is performed on all the regions
where the abdominal panniculus remains with its normal cutaneous covering. Therefore, all the adipose tissue in the lamellar layer is aspirated (Fig.5.7). I already described that liposuction must rst be performed on half of the abdomi­nal wall until the ideal thickness has been reached. The other side undergoes liposuction only after the rst procedure has concluded. Thus, the surgeon may
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5 The Beginning, Development, and Current Status of Lipoabdominoplasty: New…
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Fig. 5.5 Sequential drawing showing the technique of full lipoabdominoplasty. (a) Preoperatory demarcation of the area of skin resection, even my triangular incisions around the umbilicus; (b) liposuction is performed on full-thickness of the panniculus on supra pubic region; (c, d) skin resection was done following by deep liposuction (below fascia supercialis) on supra umbilical region; (e) my surgical instrument is placed on the umbilicus in order to demarcate its new location on the remaining abdominal ap; (f) the superior abdominal panniculus ap is pulled downwards indicated by arrows and the new umbilical region is already created
a
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Fig. 5.6 Sequential photos (a–c) and diagrams (d, e) showing liposuction on full lipoabdomino­plasty. Photo (a) prole view showing that the suprapubic region until the umbilicus is done in full thickness of the lamellar (LL) and areolar one (AL); (b) on the same patient one can see a depres­sion in all infra umbilical region, indicated by arrow, caused by absence of the panniculus all over the region; (c) one can see deep liposuction (below fascia supercialis) (FS) on segment without cutaneous resection; (d, e) diagrams show that liposuction was done in all thickness of the pan­niculus on infra umbilical region (indicated by arrow) one can see the perforator vessels (P) com­ing from rectus abdominalis muscle (RAM), are preserved; (f) photo from inside of the panniculus during surgery showing perforator vessels are preserved