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H Lu, K B Lua, Y J Lee, T T Lim, K S Yeo
This paper reports the results of combined experimental and numerical studies on the ground effect on a pair of three-dimensional (3D) hovering wings. Parameters investigated include hovering kinematics, wing shapes, and Reynolds numbers (Re). The results are consistent with the observation by another study (Gao and Lu, 2008 Phys. Fluids, 20 087101) which shows that the cycle-averaged aerodynamic forces generated by two-dimensional (2D) wings in close proximity to the ground can be broadly categorized into three regimes with respect to the ground clearance; force enhancement, force reduction, and force recovery...
October 25, 2016: Bioinspiration & Biomimetics
Jessica A Zagory, Jamie Golden, Kathleen Holoyda, Natalie Demeter, Nam X Nguyen
The optimal management of pilonidal disease in the pediatric population is still debated. We conducted a retrospective review of patients 21 years old and younger who underwent surgical management for pilonidal disease between 2009 and 2013 at a single pediatric institution. Sixty patients (41.7% male) were included in the analysis, with a mean age of 15.0 years (range, 13-20). Twelve (20%) had a prior drainage procedure for pilonidal abscess before the definitive operative treatment. After excision to the presacral fascia, 36 (60%) had primary closure, 17 (28...
October 2016: American Surgeon
Seyed S Pairawan, Derek Cody, Hahns Kim, M Katherine Hughes, Naveenraj Solomon, Maheswari Senthil, Carlos Garberoglio, Sharon Lum
Nipple-sparing mastectomy (NSM) offers improved cosmesis for women undergoing mastectomy; however, there is increased risk for complications with this technique. We sought to determine if standard anatomic measurements could be used to predict complications of NSM. We performed a retrospective review of NSM for which anthropometric measurements of sternal notch to nipple distance, base width, and inframammary fold to nipple distance were available, and compared outcomes by anatomic measurements. We identified 102 cases of NSM with measurements available for study performed in 55 patients...
October 2016: American Surgeon
Shawn Diamond, Hassan S Moghaddas, Stephen S Kaminski, Jonathan Grotts, Lisa Ferrigno, Wesley Schooler
Over two million Americans receive treatment for pressure ulcers (PUs) annually, but national surgical outcomes are not well described. This study investigated rates and risk factors of postoperative complications in patients with PU. The 2011 and 2012 American College of Surgeons-National Surgical Quality Improvement Project database was queried and PU patients undergoing flap closure were identified. Descriptive statistics and multivariate regression analysis was used and reported as odds ratios (ORs) if (P < 0...
October 2016: American Surgeon
Thibaud Dumon, Inge Wegner, Neil Sperling, Wilko Grolman
OBJECTIVE: To compare the minimal skin punch incision without additional skin incision or soft tissue reduction with the epidermal flap technique and soft tissue reduction, for the implantation of percutaneous bone-anchored hearing devices. STUDY DESIGN: Prospective cohort study. SETTING: Tertiary care referral center. SUBJECTS AND METHODS: Two hundred seventeen patients underwent 220 implantations. Sixty five cases underwent implantation by means of a skin punch resection without soft tissue reduction (punch group) and 155 cases underwent epidermal flap and soft tissue reduction (dermatome group)...
October 21, 2016: Otology & Neurotology
Hilmi Şen, Melike Oruç, Veysel Murat Işik, Murat Sadiç, Hamide Sayar, Rana Çitil, Meliha Korkmaz, Uğur Koçer
BACKGROUND: Necrosis of random pattern flaps caused by inadequate blood flow, especially in the distal part of the flap is one of the biggest challenges in reconstructive surgery. Various agents have been used to prevent flap ischemia. In this study, we used omeprazole, which is a potent inhibitor of gastric acidity to increase flap viability. METHODS: In this study, 35 Wistar-Albino type rats which were divided into 5 equal groups were used. Random-pattern dorsal skin flaps were raised in all groups at seventh day of the study...
October 24, 2016: Annals of Plastic Surgery
Franck Leclère, Emilie Desnouveaux, Vincent Casoli
INTRODUCTION: The goal of lower extremity reconstruction after trauma is the coverage of defects to give patients a healed wound and to let them resume their life, ambulate, and return to work while preventing amputation. In this article we describe an innovative use of Integra® for free flap pedicle coverage in lower extremity reconstruction. MATERIALS AND METHODS: Between January 2011 and December 2015, ten patients, 4 women and 6 men, underwent a lower limb reconstruction with an association of free flap and integra® to cover the flap pedicle...
October 25, 2016: Journal of Cosmetic and Laser Therapy: Official Publication of the European Society for Laser Dermatology
Aijia Cai, Anja M Boos, Andreas Arkudas, Raymund E Horch
The introduction of neoadjuvant radiotherapy has allowed limb-preserving surgical treatment in patients with extremity soft tissue sarcoma, and the overall prognosis of this approach is similar to that of limb amputation. The benefits of this treatment, however, are often accompanied with a higher risk of major complications and blood vessel damage because of radiation-induced inflammation and necrosis of the vessel wall. In particular, it is associated with the rupture of large vessels like the femoral artery and more severe complications of wounds located in the proximal lower extremity...
October 25, 2016: International Wound Journal
Malgorzata Banys-Paluchowski, Eike Burandt, Joanna Banys, Stefan Geist, Guido Sauter, Natalia Krawczyk, Peter Paluchowski
Breast cancer (BC) in men represents between 0.5% and 1% of all BC diagnosed each year. We report a case of advanced BC in a 62-year-old male treated at our interdisciplinary Breast Cancer Center. The patient presented with a newly diagnosed large, symptomatic mass in his left breast. Clinical examination showed a not movable mass of 16 cm diameter, deforming the whole breast; the overlying skin was livid and hypervascularized. Enlarged lymph nodes were palpable in the axillary pit. He had no concomitant diseases at time of presentation...
October 10, 2016: World Journal of Clinical Oncology
Ehab M Elzawawy, Melad N Kelada, Ahmed F Al Karmouty
Introduction. Submammary adipofascial flap (SMAF) is a valuable option for replacement of the inferior portion of the breast. It is particularly useful for reconstruction of partial mastectomy defects. It is also used to cover breast implants. Most surgeons base this flap cranially on the submammary skin crease, reflecting it back onto the breast. The blood vessels supplying this flap are not well defined, and the harvest of the flap may be compromised due to its uncertain vascularity. The aim of the work was to identify perforator vessels supplying SMAF and define their origin, site, diameter, and length...
2016: Anatomy Research International
E J Kyriopoulos, A Kyriakopoulos, A Karonidis, A Gravvanis, I Gamatsi, C Tsironis, D Tsoutsos
Mucor fungus infection is a rare opportunistic infection, rapidly progressive and often fatal in immunocompromised patients, or in patients with chronic debilitating diseases. We report six cases of trauma patients with mucormycosis. Three had severe thermal burns, one of them with a medical history of diabetes mellitus. The other three patients suffered from severe soft tissue injuries caused by traffic accidents. In all cases there had been spontaneous exposure and contact of the wounds with soil. During hospitalization, fungi cultures and/or biopsies of all wounds were performed and all resulted positive...
December 31, 2015: Annals of Burns and Fire Disasters
Flavio Malcher, Leandro Totti Cavazzola, Gustavo L Carvalho, Guilherme D E Araujo, José Antônio Da Cunha E Silva, Prashanth Rao, Antonio Carlos Iglesias
BACKGROUND AND OBJECTIVES: Inguinal hernia repair is among the most common procedures performed worldwide and the laparoscopic totally extraperitoneal (TEP) approach is a recognized and effective surgical technique. Although technically advantageous because of the option of no mesh fixation and no need for creation of a peritoneal flap resulting, in less postoperative pain and faster recovery, TEP has not achieved the popularity it deserves, mainly because of its complexity and steep learning curve...
October 2016: JSLS: Journal of the Society of Laparoendoscopic Surgeons
J C Mennie, P-N Mohanna, J M O'Donoghue, R Rainsbury, D A Cromwell
INTRODUCTION: Little is known about post-mastectomy reconstruction procedural trends in women diagnosed with breast cancer in England. Our aim was to examine patterns of immediate and delayed reconstruction procedures over time and within regions. METHODS: Women with breast cancer who underwent unilateral index immediate or delayed post-mastectomy reconstruction between 2007 and 2014 were identified using the National Hospital Episode Statistics database. Women were grouped into categories based on the type of reconstruction procedure...
October 15, 2016: European Journal of Surgical Oncology
Xiucun Li, Jianli Cui, Suraj Maharjan, Ziping Jiang, Laijin Lu, Xu Gong
OBJECTIVE: The posterior thigh region has been neglected as a donor site for free perforator flaps, likely due to difficulties in positioning the patient during surgery. This study describes the clinical application of the posterior thigh perforator flap based on the third perforating artery of the profunda femoris artery (PFA). METHODS: The free posterior thigh perforator flap based on the third perforating artery of the PFA was used for reconstruction of soft tissue defects in nine patients between February 2010 and May 2014...
October 19, 2016: Annals of Plastic Surgery
(no author information available yet)
[This corrects the article DOI: 10.1097/GOX.0000000000000858.].
September 2016: Plastic and Reconstructive Surgery. Global Open
M P A Clark, B D Westerberg, J E Mitchell
OBJECTIVE: Chronic suppurative otitis media is a neglected condition affecting up to 330 million people worldwide, with the burden of the disease in impoverished countries. The need for non-governmental organisations to hardwire training into their programmes has been highlighted. An ear surgery simulator appropriate for training in resource-poor settings was developed, and its effectiveness in facilitating the acquisition of headlight and microsurgical skills necessary to safely perform procedures via the ear canal was investigated...
October 2016: Journal of Laryngology and Otology
Setsu Nakae, Atsushi Hijikata, Toshiyuki Tsuji, Kouki Yonezawa, Ken-Ichi Kouyama, Kouta Mayanagi, Sonoko Ishino, Yoshizumi Ishino, Tsuyoshi Shirai
Archaeal NucS nuclease was thought to degrade the single-stranded region of branched DNA, which contains flapped and splayed DNA. However, recent findings indicated that EndoMS, the orthologous enzyme of NucS, specifically cleaves double-stranded DNA (dsDNA) containing mismatched bases. In this study, we determined the structure of the EndoMS-DNA complex. The complex structure of the EndoMS dimer with dsDNA unexpectedly revealed that the mismatched bases were flipped out into binding sites, and the overall architecture most resembled that of restriction enzymes...
October 17, 2016: Structure
N Y Choi, E H Kim, C H Baek, I Sohn, S Yeon, M K Chung
PURPOSE: To develop nomogram for prediction of postoperative delirium (POD) in patients undergoing ablative and reconstruction surgery for head and neck cancer. METHODS: Total 341 patients were retrospectively analyzed, and clinical variables in preoperative, intraoperative and postoperative periods were compared between delirium group (n = 89) and non-delirium group (n = 252). Multivariate logistic regression, receiver operating characteristics curve, and area under the curve (AUC) were used to generate and test a nomogram, which performance was evaluated by 10-fold cross validation (CV) procedure...
October 14, 2016: European Journal of Surgical Oncology
Jennifer A Foster, Pratibha Shukla, Omar Azar, Timothy Lee, Joanna Sesti, Jessica S Donington
Marjolin's ulcers typically result from long-term chronic inflammation of a squamous surface, most often related to burns and other scars. This report describes a squamous cell carcinoma arising from the pleural surface in a patient with a chronically neglected Eloesser flap.
November 2016: Annals of Thoracic Surgery
A Vanschoonbeek, G Fabre, L Nanhekhan, M Vandevoort
INTRODUCTION: Microvascular complications after free flap breast reconstruction are devastating, and revision of a compromised breast reconstruction is very challenging. The aim of this study was to review the different characteristics of urgent microvascular revision in DIEP, SIEA and SGAP flaps and to evaluate the final outcome after revision. MATERIALS AND METHODS: A retrospective chart review was performed for all patients who underwent an autologous breast reconstruction with a DIEP, SIEA or SGAP flap at the University Hospitals of Leuven between August 1997 and December 2013...
September 28, 2016: Journal of Plastic, Reconstructive & Aesthetic Surgery: JPRAS
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