pectoral flap

INTRODUCTION: The pectoral myocutaneous flap (PMF) is a workhorse regional reconstructive option for head and neck defects. It is commonly used for primary reconstructions due to its advantages or as a life-boat flap in the salvage of failed reconstructions of free flaps. However, it also has intrinsic drawbacks, such as perfusion problems and partial or complete flap loss. Although there are many studies about the advantages and use of PMF in the literature, the number of studies about salvage of this workhorse flap is inadequate...

PURPOSE: Pharyngocutaneous fistula (PCF) is a possible complication following total laryngectomy (TL), with a mean incidence of 17%. We intended to investigate the effect of pharyngeal closure type during TL on the prevention of PCF. METHODS: We retrospectively reviewed patients that underwent TL with a horizontal pharyngeal closure over a 10-year period. The frequency of PCF clinically, dysphagia, total oral diet, postoperative dilatation of the neopharynx and voice problems were tabulated...

BACKGROUND: Breast ptosis may occur with increasing age, after pregnancy, after breastfeeding, or after weight loss. Understanding the vascular structure of the breast and nipple-areolar complex has guided the reshaping of the breast and thus paved the way for the emergence of different techniques. This study aimed to evaluate the results of tunneled glandular flaps used to increase projection in patients undergoing breast lift surgery. METHODS: Patients who underwent breast lift and breast reduction between January 2020 and January 2022 were examined through their files and included in the study...

Fish swimming has attracted attention as a locomotion system with excellent propulsive efficiency. They swim by moving their body, fins, and other organs simultaneously, which developed during evolution. Among their many organs, the pectoral fin plays a crucial role in swimming, such as forward-backward movement and change of direction. In order to investigate the hydrodynamic interaction between pectoral fins and fish bodies, we examined the asymmetric flapping motion of the pectoral fin concerning the body axis and investigated the effect of the pectoral fin on the propulsive performance of the body of a small swimming object by numerical simulation...

Important transformations of the pectoral girdle are related to the appearance of flight capabilities in the Dinosauria. Previous studies on this topic focused mainly on paravians yet recent data suggests flight evolved in dinosaurs several times, including at least once among non-avialan paravians. Thus, to fully explore the evolution of flight-related avian shoulder girdle characteristics, it is necessary to compare morphology more broadly. Here, we present information from pennaraptoran specimens preserving pectoral girdle elements, including all purportedly volant taxa, and extensively compare aspects of the shoulder joint...

BACKGROUND: Total laryngectomy (TL) is a surgical procedure commonly performed on patients with advanced laryngeal or hypopharyngeal carcinoma. One of the most common postoperative complications following TL is the development of a pharyngocutaneous fistula (PCF), characterized by a communication between the neopharynx and the skin. PCF can lead to extended hospital stays, delayed oral feeding, and compromised quality of life. The use of a myofascial pectoralis major flap (PMMF) as an onlay technique during pharyngeal closure has shown potential in reducing PCF rates in high risk patients for development of PCF such as patients undergoing TL after chemoradiation and low skeletal muscle mass (SMM)...

BACKGROUND AND OBJECTIVE: With the incorporation of autologous fat grafting, acellular dermal matrix (ADM) products, and nipple-sparing mastectomy, prepectoral device placement has become more popular in selected patients when compared to partial submuscular (dual plane) or complete submuscular device placement. In this article, we aimed to present a review of the current state-of-the-art for implant-based breast reconstruction (IBBR) using expanders. Additionally, we present a case series of our experience with IBBR evaluating perioperative outcomes, complications, and patient-reported outcomes (PRO)...

(1) Background: Esophago-airway fistula after esophageal resection is a rare, life-threatening complication associated with a high postoperative mortality rate. Managing this condition is challenging, and the prognosis for patients is uncertain. The results and our own approach to treatment are presented. (2) Material and Methods: We present a retrospective analysis of a group of 22 patients treated for an esophago-airway fistula between 2012 and 2022, with 21 cases after esophageal resection and one during the course of Hodgkin's disease...

Complex sternal and chest wall reconstruction can be a challenging clinical situation, with the main objectives being restoration of chest wall rigidity, protection of intrathoracic organs, preservation of respiratory function, and reduction of pain and clicking. The treatment of choice is varied, with several different materials available to aid in adequate reconstruction. We present the case of a 60-year-old male with a post-sternectomy defect and debilitating symptoms who underwent reconstruction with a customized, three-dimensional (3D)-printed polyetheretherketone (PEEK) implant and pectoralis muscle flaps...

This article aims to numerically study the hydrodynamic performance of the bionic dolphin equipped with a pair of rigid pectoral fins. We use dynamic-grid technology and user-defined functions to simulate a novel butterfly-mode flapping propulsion of the fins. This pattern of propulsion is composed of three angular degrees of freedom including the pitch angle ϕp , the azimuth angle ϕa and the roll angle ϕr , which can be divided into four stages for analysis within a single cycle. The stroke of one single pectoral fin can be approximated as an ellipse trajectory, where the amplitudes of ϕa and ϕp , respectively, determine the major and minor axes of the ellipse...

BACKGROUND:  The pectoralis major musculocutaneous flap has been considered for decades the workhorse in head and neck reconstruction. However, the disadvantages of the pectoralis flap include the morbidity of the donor site in terms of cosmetic and functional results. A silicone pectoral implant  can be used to solve such aesthetic chest deformity in male patients. METHODS: A 33-years-old man with a history of cervical tracheoesophageal fistula after a blunt trauma due to a motorcycle accident, previously reconstructed with a pectoralis major flap, consulted our Plastic Surgery Department for an aesthetic defect of the donor site ...

Locomotion control of synergistical interaction between fins has been one of the key problems in the field of robotic fish research owing to its contribution to improving and enhancing swimming performance. In this paper, the coordinated locomotion control of the boxfish-like robot with pectoral and caudal fins is studied, and the effects of different control parameters on the propulsion performance are quantitatively analyzed by using hydrodynamic experiments. First, an untethered boxfish-like robot with two pectoral fins and one caudal fin was designed...

Background and objectives Proven to be oncologically safe, nipple-sparing mastectomy (NSM) preserves the entire breast skin envelope and is associated with higher patient satisfaction. However, breast ptosis is a relative contraindication to NSM, limiting who it is offered to. Direct-to-implant (DTI) breast reconstruction eliminates tissue expansion and shortens the reconstructive process but may be associated with mastectomy skin flap compromise after the placement of full-volume implants. Staged-immediate (SI) reconstruction initiates reconstruction two to three weeks after mastectomy...

The aim of this study was to evaluate the surgical treatment of esophago-tracheobronchial fistulas (ETBFs) that occurred after esophagectomy with gastric conduit reconstruction in a tertiary referral center for esophageal surgery. All patients who underwent surgical repair for an ETBF after esophagectomy with gastric conduit reconstruction were included in a tertiary referral center. The primary outcome was successful recovery after surgical treatment for ETBF, defined as a patent airway at 90 days after the surgical fistula repair...

A new species of Scleronema (Trichomycteridae) is described from the lowlands of three coastal river basins in the Atlantic Forest of the Santa Catarina state, Southern Brazil. Aspects of the anatomy, reproduction, diet, feeding behavior and habitat of the new species are described and discussed in comparison with related taxa. The conservation status of the new species, which currently faces several threats due to environmental impacts on its region of occurrence, is established. Based on characteristics observed in the new species, as well as in most of its congeners, the phylogenetic position and monophyly of Scleronema are discussed and traits considered synapomorphic for the subgenera Plesioscleronema and Scleronema are reviewed...

INTRODUCTION: The area encompassing the long head of the biceps (LHB) can be represented as a rectangular parallelepiped. This geometric view can be likened to a box, the "biceps box," where the sides are the extrinsic structures and the LHB is the intrinsic structure. Since these structures are mobile in relation to each other, a dynamic "biceps box" model can modify assessments of the LHB, in its healthy or pathological state, and make the therapeutic approach to treating LHB lesions less arbitrary...

Sampling efforts on the Saya de Malha Bank (part of the Mascarene Plateau, western Indian Ocean) unveiled three unusual small juvenile angel shark specimens, that were a much paler color than the only known western Indian Ocean species, Squatina africana Regan, 1908. However, it took many years before further specimens, including adults of both sexes, and tissue samples were collected. The present manuscript contains a redescription of S. africana based on the holotype and additional material, as well as the formal description of the new species of Squatina ...

The aim of this study was to compare quilting suture with axillary drain versus conventional sutures with axillary and pectoral drain on the formation of seroma after modified radical mastectomy with axillary lymph node dissection. The study was undertaken among 90 female patients with breast cancer who were candidates for modified radical mastectomy with axillary clearance. The intervention group ( N  = 43) with quilting and axillary drain placement and the control group ( N  = 33) without quilting with axillary and pectoral drain placement...

The macroscopic and microscopic morphology of the appendicular skeleton was studied in the two species Raja asterias (order Rajiformes) and Torpedo marmorata (Order Torpediniformes), comparing the organization and structural layout of pectoral, pelvic, and tail fin systems. The shape, surface area and portance of the T. marmorata pectoral fin system (hydrodynamic lift) were conditioned by the presence of the two electric organs in the disk central part, which reduced the pectoral fin surface area, suggesting a lower efficiency of the "flapping effectors" than those of R...

INTRODUCTION AND IMPORTANCE: Tracheobronchial injuries are uncommon complications during oesophagectomies adopting blind dissection or thoracoscopy. Neoadjuvant chemo-radiotherapy is considered a risk factor while double-lumen endotracheal tube insertion and direct surgical damage are other related causalities. PRESENTATION OF CASE: A 65-year-old male underwent a Mckeown oesophagectomy with a right thoracotomy for a mid-oesophageal carcinoma. During the latter stages of cervical dissection and oesophageal mobilization, a 2-cm tracheal injury was noted in the posterior membranous trachea...