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1.
Ear Nose Throat J ; 93(6): 212-8, 2014 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-24932819

RESUMEN

Ten rhinoplasty operations performed using postauricular fascia for the purpose of augmenting the radix and dorsum of the nose were analyzed retrospectively. All the operations were performed over a 1-year period, between 2005 and 2006. The fascia of the postauricular area has been used as a source of pliable soft-tissue grafts in primary and revision rhinoplasty. It may be easily accessed using a single sulcus incision that also enables harvesting of ear cartilage grafts. Deficiency in the radix is an overlooked abnormality seen in many patients undergoing primary as well as revision rhinoplasty after aggressive hump removal. Recent trends in rhinoplasty have been to avoid the overly reduced nasal skeleton and to create a more balanced nasal surgery result. This article presents the use of the postauricular fascia as a radix graft that has been found to be simple to carry out, reliable, and long lasting. In addition, the fascia graft is useful in the camouflage of various nasal deformities in the dorsum and sidewalls. The average patient follow-up for the study was 24 months.


Asunto(s)
Fascia/trasplante , Rinoplastia/métodos , Recolección de Tejidos y Órganos/métodos , Pabellón Auricular , Humanos , Estudios Retrospectivos , Rinoplastia/efectos adversos , Recolección de Tejidos y Órganos/efectos adversos
2.
Facial Plast Surg ; 28(1): 21-33, 2012 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-22418813

RESUMEN

Volume loss contributes as much to the aging appearance of the face as sagging and rhytids. This occurs in the nasolabial and labiomental creases, as well as the lips, mandibular ramus, and the prejowl sulcus. Treatment of these areas with autogenous fat has yielded results that are generally good, but often of brief duration. To obtain the best results, trauma to the transplanted adipocytes must be avoided through meticulous attention to the details of technique. Observed complications are usually minor. Despite variability in the duration of effect, the fact that autogenous fat is relatively inexpensive and readily available makes it a viable alternative for facial volume replacement.


Asunto(s)
Adipocitos/trasplante , Tejido Adiposo/trasplante , Técnicas Cosméticas , Cara/cirugía , Rejuvenecimiento , Mentón/cirugía , Humanos , Labio/cirugía , Lipectomía , Surco Nasolabial/cirugía , Recolección de Tejidos y Órganos
3.
Arch Facial Plast Surg ; 8(6): 390-5, 2006.
Artículo en Inglés | MEDLINE | ID: mdl-17116786

RESUMEN

OBJECTIVE: To determine the usefulness of resorbable plating systems in load-bearing applications of the mandible and the location of critical failure. METHODS: An osteotomy was created in 24 fresh cadaveric mandibles at the angle and fixated by the Champy technique with similar resorbable craniofacial plating systems from 4 manufacturers. Each mandible was held rigid as a material test system applied a downward force anteriorly. The critical tolerance was measured and the type of failure was noted. RESULTS: Critical failure occurred at forces from 34.6 to 137.8 N. We found a statistically significant difference between the plating groups (P<.001 for all comparisons). The point of failure was almost uniformly at the plate. CONCLUSIONS: Critical failure was overwhelmingly due to rupture of the plate rather than to stripping or shearing of the screws as had been strongly expected. We found differences in plate strengths for this particular application and did not evaluate their respective long-term resorptive properties. We do not advocate that single resorbable plate fixation be the sole means of mandible angle fracture fixation, regardless of the plating system used.


Asunto(s)
Implantes Absorbibles , Placas Óseas , Mandíbula/cirugía , Osteotomía/instrumentación , Análisis de Varianza , Tornillos Óseos , Cadáver , Femenino , Humanos , Masculino , Ensayo de Materiales , Resistencia a la Tracción
5.
Facial Plast Surg ; 21(3): 199-206, 2005 Aug.
Artículo en Inglés | MEDLINE | ID: mdl-16307400

RESUMEN

Management of frontal sinus fractures (FSF) has been the subject of great debate for more than six decades. Multiple treatment options and algorithms have been proposed by multiple specialties throughout the years; however, the optimal method of frontal sinus repair has yet to be elucidated. Because of the location of the frontal sinus and its proximity to numerous intracranial structures, inadequate treatment may lead to life-threatening intracranial infectious complications. Meningitis, encephalitis, and brain abscess are the most common intracranial complications. Other complications include persistent cerebrospinal leakage, mucopyoceles, frontal osteomyelitis, meningoencephalocele, and nonunion of the frontal bone. Orbital involvement may result in ophthalmoplegia, orbital abscess, diplopia, enophthalmos, proptosis, preseptal cellulitis, and partial or complete loss of vision. Morbidity and mortality are often dependent on the anatomic characteristics of the fracture, concomitant injuries, treatments rendered, age, gender, and mechanism of injury. Management of frontal sinus fractures is so controversial that the indications, timing, method of repair, and surveillance remain disputable among several surgical specialties. The most important tenet of frontal sinus fracture management remains the same: create a safe sinus. This is accomplished by following four basic principles: reestablish the frontal bony contour to its premorbid state, restore normal sinus mucosa with a patent drainage system if possible, eradicate the sinus cavity if the normal mucosa or drainage system cannot be reestablished, and create a permanent barrier between the intracranial and extracranial systems to prevent overwhelming infectious complications. By following these four basic principles, frontal sinus fracture management will be safe and effective as long as extended surveillance is part of the protocol.


Asunto(s)
Hueso Frontal/lesiones , Seno Frontal/lesiones , Fracturas Craneales/cirugía , Adulto , Femenino , Hueso Frontal/diagnóstico por imagen , Hueso Frontal/cirugía , Seno Frontal/diagnóstico por imagen , Seno Frontal/cirugía , Guías como Asunto , Humanos , Masculino , Radiografía , Fracturas Craneales/diagnóstico por imagen
6.
Ann Plast Surg ; 55(1): 87-92; discussion 93, 2005 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-15985797

RESUMEN

Hydroxyapatite cement is a relatively new biomaterial that has found widespread use in craniomaxillofacial surgery. Despite its common usage, complication rates as high as 32% have been reported. When failed implants are removed, implant fracture has been cited as a potential cause of failure. The purpose of this study was to evaluate resistance to fracture among 4 commercially available hydroxyapatite cement formulations. The materials tested included Norian Craniofacial Repair System (carbonated apatite cement) (AO North America, Devon, PA), Norian CRS Fast Set Putty (carbonated apatite cement) (AO North America), BoneSource (hydroxyapatite cement) (Stryker Leibinger, Portage, MI), and Mimix (hydroxyapatite cement) (Walter Lorenz Surgical, Inc, Jacksonville, FL). To ensure consistency, all materials were embedded in acrylic wells. Each material was placed into a well 2.54 cm in diameter and 0.953 cm in thickness. The materials were prepared per manufacturer specifications. All materials were incubated at 37.0 degrees C, in 6% CO2, 100% humidity for 36 hours. Using the Bionix MTS Test System, a 12-mm-diameter probe applied incremental force to the center of the disk at a rate of 0.1 mm per second. The transmitted force was measured using a Bionix MTS Axial-Torsional Load Transducer for each disk. The force which resulted in fracture was recorded for each material. Ten disks of each material were processed by this method, for a total of 40 disks. The significance of resistance to fracture for the 4 compounds was analyzed using 1-way analysis of variance with post hoc Scheffe method. Mean fracture force with related P values was plotted for direct comparison of group outcomes. Material type contributed significantly to variance in fracture force for the biomaterials studied. Norian CRS required the greatest mean fracture force (1385 N, SD+/-292 N), followed by Norian CRS Fast Set Putty (1143 N, SD+/-193 N). Mimix required a mean fracture force of 740 N, SD+/-79 N. BoneSource required a mean fracture force of 558 N, SD+/-150 N. Mimix and BoneSource required significantly less force for fracture when compared with Norian CRS and Fast Set Putty (P<0.01). Comparisons of fracture load resistance between 4 commonly used bone substitute materials have not been previously reported. Increasing biomaterial strength may reduce complications resulting from reinjury to cranioplasty sites. In this model, Norian CRS and Norian CRS Fast Set Putty demonstrated a significantly greater resistance to fracture when compared with BoneSource and Mimix.


Asunto(s)
Cementos para Huesos , Fijación de Fractura/métodos , Hidroxiapatitas , Análisis de Varianza , Fosfatos de Calcio , Ácido Cítrico , Humanos , Ensayo de Materiales , Estrés Mecánico
7.
Pediatr Surg Int ; 21(6): 466-9, 2005 Jun.
Artículo en Inglés | MEDLINE | ID: mdl-15883822

RESUMEN

Fulminant meningococcemia can have life-threatening as well as limb-threatening complications. However, unlike other types of peripheral gangrene, areas of necrosis do not follow known anatomic vascular patterns. Instead, irregular and patchy areas of necrosis are found to exist adjacent to viable tissues. With improved critical care, more patients survive the initial insult and are referred for reconstructive procedures. In this case, a 6-year boy was diagnosed with meningococcemia-induced purpura fulminans. After stabilization, he was transferred to our facility for management of open wounds of both lower extremities and the left elbow. Soft-tissue coverage was accomplished after multiple debridements using various flaps. In particular, a defect of the right midtibia was reconstructed using a posterior tibial artery perforator-based flap with excellent results. This is the first time such a flap has been reported in association with meningococcemia in a patient of this age.


Asunto(s)
Vasculitis por IgA/cirugía , Infecciones Meningocócicas/cirugía , Sepsis/cirugía , Colgajos Quirúrgicos , Niño , Humanos , Vasculitis por IgA/microbiología , Masculino , Procedimientos de Cirugía Plástica , Sepsis/microbiología , Arterias Tibiales
8.
J Reconstr Microsurg ; 21(2): 137-43, 2005 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-15739152

RESUMEN

Muscle and musculocutaneous flaps have been used reliably in reconstruction of soft-tissue defects for many years. Previous experimental studies have shown musculocutaneous flaps to be superior to the random pattern and fasciocutaneous flaps in the management of infected wounds. Over the past decade, perforator flaps have gained acceptance as alternative methods of reconstruction in the clinical setting that can decrease donor-site morbidity and hospital stay, and increase patient satisfaction. The authors theorized that perforator flaps may be able to handle infected wounds better than random pattern and fasciocutaneous flaps because their blood supply is essentially the same as many of their musculocutaneous counterparts. The goal of this study was to compare the S1 perforator-based skin flap and latissimus dorsi musculocutaneous flap in the dorsal flank of the rabbit with the introduction of bacteria to simulate both superficial and deep wound infection. Measurements of oxygen tension and regional perfusion index were performed on both types of flaps to ascertain their viability and capacity to heal. The authors found no statistical significance between latissimus dorsi musculocutaneous and S1 perforator flaps in the rabbit with respect to superficial and deep wound infections. The regional perfusion index was calculated for postoperative days 1, 2, and 4. No statistically significant difference between the two flaps using the regional perfusion index could be identified. Additionally, regional perfusion for both types of flaps was greater than 0.6, indicating that their capacity to heal wounds is similar.


Asunto(s)
Fascia/microbiología , Músculo Esquelético/microbiología , Consumo de Oxígeno/fisiología , Colgajos Quirúrgicos , Infección de la Herida Quirúrgica/patología , Animales , Biopsia con Aguja , Modelos Animales de Enfermedad , Fascia/patología , Femenino , Inmunohistoquímica , Masculino , Microcirugia/métodos , Músculo Esquelético/patología , Presión , Probabilidad , Pseudomonas aeruginosa/crecimiento & desarrollo , Conejos , Procedimientos de Cirugía Plástica , Flujo Sanguíneo Regional/fisiología , Sensibilidad y Especificidad , Cicatrización de Heridas/fisiología
9.
Ann Plast Surg ; 54(4): 402-8, 2005 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-15785282

RESUMEN

Multiple studies have sought to determine the postreduction stability of internal fixation in zygomaticomaxillary complex (ZMC) fractures. Three-point fixation with titanium miniplates is increasingly recommended to repair these injuries. Use of bioresorbable plates has been suggested to eliminate potential postoperative hardware complications. By quantitatively comparing different combinations of titanium and resorbable plating systems, this study attempts to demonstrate which combinations will provide stable fixation of the fractured ZMC. Osteotomies were performed on 40 zygomas in 20 fresh-frozen cadaver skulls, simulating noncomminuted ZMC fractures. The control group (group 0) consisted of titanium plates at the zygomaticofrontal (ZF) suture, infraorbital rim (IOR), and zygomaticomaxillary buttress (ZMB). Group 1 consisted of titanium plates at the ZF and IOR, and a resorbable plate at the ZMB. Group 2 used a titanium plate at the ZF, and resorbable plates at the IOR and ZMB. Group 3 consisted of resorbable plates at the ZF, IOR, and ZMB. A mechanical test system was used to apply loads in the vectorial direction of the masseter. Critical forces and patterns of hardware failure were recorded. Group 0 failed at a mean force of 589 +/- 146 N (60 kg). Group 1 failed at a mean force of 507 +/- 124 N (52 kg). No statistically significant differences between groups 0 and 1 were found. The mean force required for failure in groups 2 and 3 was lower. Differences in the force required for failure between groups 2 and 3 and the control group was significant (P <0.05). Failure patterns were analyzed. The ZF plate tended to stretch predominantly in groups 1, 2, and 3, whereas it tended to break in group 0 (P = 0.005). The IOR plate demonstrated predictable screw failure in groups 2 and 3 (P = 0.007). For group 0, the ZF was the site of the majority of critical failures. For groups 2 and 3, the IOR was almost invariably the site of critical failure (P = 0.004). At the ZMB, there was no significant association between failure modes and it was rarely the site of critical failure, regardless of the method of fixation. However, the strength of fixation was proportional to the number of titanium plates used. Overall, the method of fixation significantly affected the force required for mechanical failure of ZMC fractures (P <0.0001). The presence of teeth significantly increases the force required for implant failure in ZMC fracture fixation when combinations of plates are used (P = 0.038). All combinations of titanium and resorbable plates may be sufficient to overcome the displacing forces produced by the masseter and may be used for internal fixation of isolated ZMC fractures in the adult.


Asunto(s)
Placas Óseas , Titanio/uso terapéutico , Fracturas Cigomáticas/cirugía , Materiales Biocompatibles/uso terapéutico , Fenómenos Biomecánicos , Resorción Ósea , Cadáver , Femenino , Humanos , Fijadores Internos , Masculino
10.
Ann Plast Surg ; 54(1): 59-65, 2005 Jan.
Artículo en Inglés | MEDLINE | ID: mdl-15613885

RESUMEN

Despite technical advances over the past 3 decades, subtotal, total, and extended total maxillectomy defects remain challenging reconstructive problems. In particular, postoncologic resection of the maxilla results in complex 3-dimensional defects of the midface, which cause severe functional and esthetic deformities. Such defects generally require composite tissue flaps for reconstruction. Rebuilding the palate and maxilla is especially challenging because it requires reconstitution of the facial buttresses, occlusion, replacement of bony hard palate, and the thin intraoral and intranasal lining which normally constitute the soft palate. Various methods of reconstruction have been applied to this area in search of an ideal soft tissue-bone flap to restore the bony framework of the maxilla and palate while providing an internal lining. Osteocutaneous and osteomuscular flaps such originating from the scapular, iliac, peroneal, and radial vascular systems have been attempted with good success. We devised an osteocutaneous flap based on the scapular vascular system, which provided bone and soft tissue to successfully reconstruct the palate and maxilla in 2 patients. The skin paddle received its blood supply from the major perforating vessels of the thoracodorsal artery, and the scapular bone was nourished by the angular vessels. Although free tissue transfer using thoracodorsal perforator flaps has been described, this flap has not been previously reported in the literature as an osteocutaneous tissue transfer. With the use of rigid fixation, excellent results have been obtained with this technique for palatal and maxillary reconstruction.


Asunto(s)
Procedimientos Quirúrgicos Otorrinolaringológicos/efectos adversos , Procedimientos de Cirugía Plástica/métodos , Colgajos Quirúrgicos/irrigación sanguínea , Heridas y Lesiones/cirugía , Adolescente , Adulto , Carcinoma Adenoide Quístico/cirugía , Humanos , Neoplasias Maxilomandibulares/cirugía , Masculino , Maxilar/cirugía , Hueso Paladar/cirugía , Sarcoma/cirugía , Heridas y Lesiones/etiología
11.
Ear Nose Throat J ; 84(7): 441-7, 2005 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-16813036

RESUMEN

Microsurgical transfer of vascularized tissue during the past three decades has allowed highly complicated postoncologic defects in the head and neck region to be reconstructed. Recently, perforator flaps have been used to reduce postoperative pain, shorten hospital stay, and lessen donor-site complications. These flaps are offsprings of previously known musculocutaneous and fasciocutaneous flaps and are harvested with preservation of the underlying muscular and fascial structures. The vascularized skin and soft-tissue envelope is supplied by perforating branches from the parent vessel. Less is known about the performance of these flaps in the head and neck region. During a 4-year period, 22 patients at our institution underwent reconstruction of the head and neck region with deep inferior epigastric perforator (DIEP) or thoracodorsal artery perforator (TDAP) flaps. All but one of the flaps survived. Advantages noted include: (1) longer vascular pedicles, (2) less postoperative pain, (3) less donor-site deformity, (4) improved aesthetic outcome, (5)potential for a neurosensory flap, (6) potential for an osteocutaneous flap, and (7) ease of postoperative radiologic follow-up. The DIEP flap can be harvested concurrent with oncologic resection, with the patient in the supine position. The TDAP flap is dissected with the patient in the decubitus position, creating an additional step to change operative position, and separates extirpative and reconstructive stages.


Asunto(s)
Procedimientos de Cirugía Plástica/métodos , Recto del Abdomen/trasplante , Colgajos Quirúrgicos/irrigación sanguínea , Adolescente , Adulto , Anciano , Femenino , Estudios de Seguimiento , Rechazo de Injerto , Supervivencia de Injerto , Neoplasias de Cabeza y Cuello/patología , Neoplasias de Cabeza y Cuello/cirugía , Humanos , Masculino , Persona de Mediana Edad , Disección del Cuello , Recto del Abdomen/irrigación sanguínea , Estudios Retrospectivos , Medición de Riesgo , Cicatrización de Heridas/fisiología
12.
Ann Plast Surg ; 53(4): 305-10, 2004 Oct.
Artículo en Inglés | MEDLINE | ID: mdl-15385761

RESUMEN

The superior gluteal artery perforator (SGAP) flap is a useful technique for restoration of the breast after mastectomy. If appropriately planned, the soft-tissue envelope supplied by the superior gluteal artery perforator vessels can be harvested with minimal donor site morbidity and often results in a highly esthetic restoration of the breasts. Dissection of the flap is performed with complete preservation of gluteus maximus muscle function. The resulting vascular pedicle obtained via dissection through the muscle is longer than that of gluteal musculocutaneous flaps and affords the surgeon the luxury of avoiding vein grafts in the anastomotic phase of surgery. Despite these advantages, use of the SGAP flap is not popular among reconstructive surgeons. Many practitioners are not familiar with the vascular anatomy of the gluteal area and may not be comfortable with the dissection of the parent vessels or lack the desire to practice microsurgery. On the other hand, our group has reported the largest experience to date with this method of breast reconstruction and has found the SGAP flap to be a reliable and safe method of autologous breast restoration in unilateral absence of the breast. Although the indications to perform single-stage gluteal tissue transplantation for bilateral breast restoration are uncommon, they do occasionally arise in clinical practice. We have carried out concurrent bilateral breast reconstruction using SGAP flaps on 6 patients with acceptable overall morbidity. All flaps went on to survive and resulted in highly esthetic restorations of the breast. Though a challenging undertaking, in-unison transfer of bilateral SGAP flaps serves as a useful option for a subset of patients desiring 1-stage bilateral breast reconstruction.


Asunto(s)
Arterias/trasplante , Mamoplastia/métodos , Colgajos Quirúrgicos , Adulto , Nalgas/irrigación sanguínea , Femenino , Supervivencia de Injerto , Humanos , Isquemia , Mastectomía , Persona de Mediana Edad , Colgajos Quirúrgicos/irrigación sanguínea
13.
Arch Facial Plast Surg ; 6(5): 342-7, 2004.
Artículo en Inglés | MEDLINE | ID: mdl-15381582

RESUMEN

BACKGROUND: The postauricular area is often explored by reconstructive and otologic surgeons. We previously reported on the use of postauricular tissues as a graft for wrapping hydroxyapatite implants in orbital reconstruction. This procedure reduced the incidence of implant exposure, while achieving acceptable cosmetic results. Although much is known about the postauricular area, muscle and fascial relationships and potential variations in anatomy remain ill defined. OBJECTIVES: To identify and analyze variations in the patterns of the postauricular muscle complex (PMC) and to study the relationships of the fascial contributions from the components that make up the PMC. METHODS: Dissections were performed using 40 fresh specimens. Muscular and fascial components of the PMC were dissected, analyzed, and photographed. RESULTS: The PMC receives contributions from the occipitalis and trapezius muscles, the deep temporal and sternocleidomastoid fasciae, and the superior and posterior auricular and platysma muscles. Major contributors to the PMC were present in every specimen. Minor contributors were more variable in their presence and contributions. The posterior auricular muscle was identified as having several muscle bundles in 1 specimen and absent in 2 specimens (5%). The occipitalis fascia was seen to insert superior to the auricle and to blend with the deep temporal fascia in 3 cases (7%). The platysma muscle contributed to the PMC in 8 cases (20%). CONCLUSIONS: This study demonstrated important variations in the presence and contributions of 7 previously known muscular structures and their role in forming the PMC. Seven distinct patterns are identified, and the potential clinical implications of these anatomical variations are illustrated.


Asunto(s)
Oído Externo/cirugía , Músculo Esquelético/cirugía , Procedimientos de Cirugía Plástica/métodos , Cadáver , Humanos
14.
J Pediatr Surg ; 39(9): 1428-31, 2004 Sep.
Artículo en Inglés | MEDLINE | ID: mdl-15359407

RESUMEN

Lymphatic malformations are benign tumors that arise from congenital defects of the lymphatic system. Despite the fact that all lymphatic malformations develop embryologically, their presence may not be detected until the tumor enlarges from hemorrhage or infection. Typical of these tumors is a slow-growing, asymptomatic phase with the potential for rapid and massive expansion and a tendency to infiltrate into surrounding tissues. These tumors are associated with a high rate of recurrence, especially with incomplete excisions. To minimize the chance of recurrence, a complete resection of a groin microcystic lymphatic malformation was performed on this 15-month-old boy, creating a significant defect in the upper thigh. Immediate coverage was felt to be the best option for reducing any associated morbidity. We used a skin-soft tissue flap supplied by perforators of the deep inferior epigastric artery to repair the wound. Using this technique, the musculofascial structures in the abdominal wall were completely spared, and the skin and fat were transferred on a vascular leash to the desired location. The donor site was closed by approximating the fascial edges without tension. The defect on the thigh was filled with tissue of similar thickness and characteristics, avoiding potential contour irregularities and color mismatch. The deep inferior epigastric perforator (DIEP) flap is a useful option for groin defects and can be applied safely in the pediatric population.


Asunto(s)
Anomalías Linfáticas/cirugía , Procedimientos de Cirugía Plástica , Colgajos Quirúrgicos , Ingle , Humanos , Lactante , Masculino , Muslo
15.
Plast Reconstr Surg ; 114(1): 32-41; discussion 42-3, 2004 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-15220564

RESUMEN

The thoracodorsal artery perforator flap is a relatively new flap that has yet to find its niche in reconstructive surgery. At the authors' institution it has been used for limb salvage, head and neck reconstruction, and trunk reconstruction in cases related to trauma, burns, and malignancy. The authors have found the flap to be advantageous for cranial base reconstruction and for resurfacing the face and oral cavity. The flap has been used successfully for reconstruction of traumatic upper and lower extremity defects, and it can be used as a pedicled flap or as a free tissue transfer. The perforating branches of the thoracodorsal artery offer a robust blood supply to a skin-soft-tissue paddle of 10 to 12 cm x 25 cm, overlying the latissimus dorsi muscle. The average pedicle length is 20 cm (range, 16 to 23 cm), which allows for a safe anastomosis outside the zone of injury in traumatized extremities; the flap can be made sensate by neurorrhaphy with sensory branches of the intercostal nerves. Vascularized bone can be transferred with this flap by taking advantage of the inherent vascular anatomy of the subscapular artery. A total of 30 pedicled and free flap transfers were performed at the authors' institution with an overall complication rate of 23 percent and an overall flap survival rate of 97 percent. Major complications, such as vascular thrombosis, return to the operating room, fistula formation, recurrence of tumor, and flap loss, occurred in 17 percent of the patients. Despite these drawbacks, the authors have found the thoracodorsal artery perforator flap to be a safe and extremely versatile flap that offers significant advantages in acute and delayed reconstruction cases.


Asunto(s)
Colgajos Quirúrgicos/irrigación sanguínea , Recolección de Tejidos y Órganos/métodos , Adulto , Axila/cirugía , Cadáver , Hidradenitis Supurativa/cirugía , Humanos , Masculino , Procedimientos Quirúrgicos Orales , Procedimientos de Cirugía Plástica/métodos , Cráneo/cirugía , Colgajos Quirúrgicos/inervación
16.
Ann Plast Surg ; 52(3): 246-52, 2004 Mar.
Artículo en Inglés | MEDLINE | ID: mdl-15156976

RESUMEN

Bilateral prophylactic mastectomy can reduce the incidence of breast cancer by 87 to 93% in high-risk individuals and is an appealing option for many patients if reconstruction can be provided with acceptable morbidity and outstanding esthetic results. Autogenous breast reconstruction techniques have evolved over the last 20 years to meet this goal. Familiarity with the deep inferior epigastric perforator (DIEP) flap led us to carry out simultaneous bilateral breast reconstruction with acceptable morbidity and superior esthetic outcome in 3 patient groups: (1) after bilateral prophylactic mastectomy, (2) after therapeutic and contralateral prophylactic mastectomy, and (3) after explantation of bilateral implant failures. A retrospective review of our experience with 280 flaps in 140 patients was performed. Average operating times, including time for implant removal or mastectomy and reconstruction, was 7.3 hours. Average hospitalization was 3.9 days. Significant perioperative complications occurred in 9 patients (6.4%); all returned to the operating room. This included 7 microvascular complications, 1 hematoma, 1 seroma, and 1 DVT. Less significant complications were divided into early and late. The early complications included 1.8% partial flap necrosis, 4.2% abdominal apron necrosis greater than 5 cm2, 2.9% seromas that required intervention, and 5.7% partial breast flap dehiscence. Late complications included 12.5% fat necrosis of any size and 2.1% hernia formation. Smoking, obesity, age, history of chest wall radiation, and flap size were evaluated as risk factors for increased morbidity.


Asunto(s)
Mamoplastia/métodos , Mastectomía , Colgajos Quirúrgicos/irrigación sanguínea , Recolección de Tejidos y Órganos/métodos , Pared Abdominal/cirugía , Adulto , Anciano , Neoplasias de la Mama/prevención & control , Neoplasias de la Mama/cirugía , Femenino , Humanos , Tiempo de Internación , Persona de Mediana Edad , Estudios Retrospectivos , Factores de Tiempo , Resultado del Tratamiento
17.
Plast Reconstr Surg ; 113(4): 1153-60, 2004 Apr 01.
Artículo en Inglés | MEDLINE | ID: mdl-15083015

RESUMEN

This study examined 758 deep inferior epigastric perforator flaps for breast reconstruction, with respect to risk factors and associated complications. Risk factors that demonstrated significant association with any breast or abdominal complication included smoking (p = 0.0000), postreconstruction radiotherapy (p = 0.0000), and hypertension (p = 0.0370). Ninety-eight flaps (12.9 percent) developed fat necrosis. Associated risk factors were smoking (p = 0.0226) and postreconstruction radiotherapy (p = 0.0000). Interestingly, as the number of perforators increased, so did the incidence of fat necrosis. There were only 19 cases (2.5 percent) of partial flap loss and four cases (0.5 percent) of total flap loss. Patients with 45 flaps (5.9 percent) were returned to the operating room before the second-stage procedure. Patients with 29 flaps (3.8 percent) were returned to the operating room because of venous congestion. Venous congestion and any complication were observed to be statistically unrelated to the number of venous anastomoses. Overall, postoperative abdominal hernia or bulge occurred after only five reconstructions (0.7 percent). Complication rates in this large series were comparable to those in retrospective reviews of pedicle and free transverse rectus abdominis musculocutaneous flaps. Previous studies of the free transverse rectus abdominis musculocutaneous flap described breast complication rates ranging from 8 to 13 percent and abdominal complication rates ranging from 0 to 82 percent. It was noted that, with experience in microsurgical techniques and perforator selection, the deep inferior epigastric perforator flap offers distinct advantages to patients, in terms of decreased donor-site morbidity and shorter recovery periods. Mastery of this flap provides reconstructive surgeons with more extensive options for the treatment of postmastectomy patients.


Asunto(s)
Mamoplastia , Colgajos Quirúrgicos , Adolescente , Adulto , Anciano , Femenino , Humanos , Mamoplastia/efectos adversos , Persona de Mediana Edad , Complicaciones Posoperatorias/epidemiología , Estudios Retrospectivos , Factores de Riesgo
18.
Ann Plast Surg ; 52(4): 407-13, 2004 Apr.
Artículo en Inglés | MEDLINE | ID: mdl-15084888

RESUMEN

Peripheral facial nerve palsy is a common sequela of traumatic craniofacial injury, often resulting in dramatic and sometimes permanent functional deficits. Exogenous agents and methods of repair that accelerate axonal regeneration would be of great benefit to the multitude of patients with facial nerve injuries. The objective of this study was to evaluate the effect of FK506 at the time of facial nerve repair using entubulation neurorrhaphy, and to compare entubulation neurorrhaphy versus interposition autograft in critical facial nerve gap defects. The study design was a prospective, randomized, blinded animal study with a control group. Twenty-five New Zealand White rabbits were assigned to 4 experimental groups and a control group. The buccal branch of the facial nerve was used in all procedures. Group 1 was the control group. Rabbits in group 2 underwent sham surgery. Group 3 was an interposition autograft group in which a 6-mm segment of nerve was transacted, flipped, and followed by epineural repair. Groups 4 and 5 underwent transection followed by entubulation neurorrhaphy with topical administration of either a carrier molecule (group 4) or an FK506 carrier molecule (group 5). Outcome measures included daily subjective assessment of upper lip movement; electromyographic studies at weeks 3, 5, and 8 postoperatively; and blinded quantitative histomorphometric evaluation after 8 weeks. All rabbits in all groups were noted to have spontaneous movement after 8 weeks, with 1 rabbit in group 5 obtaining the highest functional score among all study groups. Electrophysiologic studies showed polyphasic potentials, indicating reinnervation in 1 rabbit in group 5. Histomorphometric examination of group 5 rabbits revealed a similar cross-sectional area distal to transection and remyelination. Other groups showed decreased cross-sectional area and/or incomplete remyelination distal to the transection. FK506 applied topically at the time of facial nerve repair using entubulation neurorrhaphy demonstrated superior results in nerve regeneration versus entubulation neurorrhaphy carrier protein alone, and interposition autograft.


Asunto(s)
Traumatismos del Nervio Facial/tratamiento farmacológico , Traumatismos del Nervio Facial/cirugía , Inmunosupresores/administración & dosificación , Regeneración Nerviosa/efectos de los fármacos , Procedimientos Neuroquirúrgicos/métodos , Tacrolimus/administración & dosificación , Administración Tópica , Animales , Modelos Animales , Estudios Prospectivos , Conejos
19.
Ann Plast Surg ; 52(2): 118-25, 2004 Feb.
Artículo en Inglés | MEDLINE | ID: mdl-14745258

RESUMEN

Fujino was the first to introduce gluteal tissue as a free flap for breast reconstruction. The use of the musculocutaneous flap from the buttock in breast reconstruction has been championed by Shaw. Despite the initial enthusiasm for this area as a donor site, few other large series exist on the subject. Two decades of experience with this region as a donor site led to recognition of advantages and drawbacks. Furthermore, use of both the superior and inferior gluteal musculocutaneous flap was associated with certain important donor site complications and the use of vein grafts to allow for microvascular anastomosis. The evolution of free tissue transfer has progressed to the level of the perforator flap. This reconstructive technique allows elevation of tissue from any region consisting only of fat and skin. This minimizes donor site morbidity by allowing preservation of the underlying muscle and coverage of important structures in the region such as nerves. The superior and inferior gluteal perforator flaps have been used at our institution for breast reconstruction since 1993. The superior gluteal artery perforator (S-GAP) flap is our preferred method of breast reconstruction when the abdomen is not available or preferable. We report the result of this flap over the past 9 years and point out important surgical refinements, advantages, disadvantages, and lessons learned during this time.


Asunto(s)
Mamoplastia , Colgajos Quirúrgicos , Adulto , Nalgas , Femenino , Humanos , Persona de Mediana Edad , Reoperación , Colgajos Quirúrgicos/irrigación sanguínea
20.
Ann Plast Surg ; 51(1): 23-9, 2003 Jul.
Artículo en Inglés | MEDLINE | ID: mdl-12838121

RESUMEN

Based on the dissection of 20 fresh cadavers, the authors have detailed further the vascular anatomy of the thoracodorsal artery and its cutaneous perforator vessels. The thoracodorsal artery showed a constant bifurcation into a horizontal branch and a lateral branch, located on the deep surface of the latissimus dorsi muscle 4 cm (range, 3-6 cm) distal to the inferior scapular border and 2.5 cm (range, 1-4 cm) medial to the lateral free margin of the muscle. In 20 specimens there was a total of 64 musculocutaneous perforators larger than 0.5 mm. Thirty-six perforators (56%) originated from the lateral branch and 28 perforators (44%) originated from the horizontal branch. All perforators originated within a distance of 8 cm from the neurovascular hilus and ran in proximity with the horizontal or lateral branches. In 11 dissections (55%) there was also a direct cutaneous branch originating from the extramuscular course of the thoracodorsal artery before the neurovascular hilus. This cutaneous branch did not pierce the latissimus muscle but rounded the lateral muscle edge and supplied the overlying subcutaneous tissue and skin. It is hoped that the constant anatomy will encourage surgeons in the future to use the thoracodorsal artery perforator flap more often.


Asunto(s)
Colgajos Quirúrgicos/irrigación sanguínea , Arterias Torácicas/anatomía & histología , Adulto , Dorso , Extremidades/lesiones , Extremidades/cirugía , Humanos , Músculo Esquelético/irrigación sanguínea , Piel/irrigación sanguínea , Cicatrización de Heridas
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