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https://www.readbyqxmd.com/read/28618738/groin-and-thigh-reconstructions-with-pedicled-rectus-abdominis-myocutaneous-flaps
#1
Hakan Uzun, Ozan Bitik, Yahya Baltu, Mehmet Dadaci, Aycan Uğur Kayikçioğlu
BACKGROUND/AIM: Resection of tumors from the groin and thigh regions with safe margins often results in significant soft tissue defects, which preclude primary closure. This study presents a series of rectus abdominis myocutaneous flaps for irradiated thigh and groin wounds with the purpose of evaluating the efficacy and outcomes of these flaps in this population. MATERIALS AND METHODS: From 2008 to 2015, all patients who underwent resection of thigh or groin region tumors and reconstruction with an inferiorly based rectus abdominis myocutaneous flap were retrospectively identified...
June 12, 2017: Turkish Journal of Medical Sciences
https://www.readbyqxmd.com/read/28609622/combined-electron-diffraction-and-spectroscopic-determination-of-the-structure-of-spiropentane-c5h8
#2
Jason W Sandwisch, Blake A Erickson, Kenneth Hedberg, Joseph W Nibler
Gas phase electron-diffraction (GED) data have been combined with recent spectroscopic rotational constants to determine the rα(0) structural parameters for spiropentane, C5H8. The structure has D2d symmetry and the results yield values of 1.105(2) Ǻ for the CH bond length, 1.557(3) Ǻ for the distal CC bond length, and a somewhat smaller value of 1.482(1) Ǻ for the four lateral CC bonds that connect to the central carbon atom. The HCH angle is 113.7(13)˚ and the HCH flap angle, defined as the angle of the HCH bisector and the distal CC bond, is 150...
June 13, 2017: Journal of Physical Chemistry. A
https://www.readbyqxmd.com/read/28604551/the-periosteal-medial-femoral-condyle-free-flap-a-new-option-for-soft-tissue-reconstruction-of-the-distal-lower-extremity
#3
Noah H Saad, Matthew E Pontell, Brian S Winters, Joseph Daniel, Adam Saad
BACKGROUND: Small (<30 cm) soft tissue defects of the distal leg, foot, and ankle pose a complicated issue with regard to wound healing. Multiple flaps have been proposed for reconstruction of these wounds with varying levels of success. The medial femoral condyle flap is a free bone flap supplied by the descending geniculate artery. It is currently used in the treatment of fracture nonunion, infected bone defects, avascular necrosis, and osteoradionecrosis. This study proposes the use of the periosteal portion of the medial femoral condyle (PMFC) flap for soft tissue reconstruction of the distal leg, foot, and ankle...
June 9, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28602132/treatment-of-congenital-clasped-thumb-in-arthrogryposis
#4
H Abdel-Ghani, M Mahmoud, A Shaheen, M Abdel-Wahed
We report the result of treatment of 69 complex clasped thumbs in 39 patients with distal arthrogryposis. The mean age at surgery was 30 months. Surgical reconstruction included skin augmentation of the first web using modified dorsal rotation advancement flap (Abdel-Ghani flap), a la Carte release of tight structures of the first web, and chondrodesis of the thumb metacarpophalangeal joint. The mean follow-up was 4 years. We prefer chondrodesis because of the presence of global instability, abnormal joint structure, abnormal articular surfaces, and inefficient muscles for transfer...
June 1, 2017: Journal of Hand Surgery, European Volume
https://www.readbyqxmd.com/read/28570455/anatomical-reconstruction-of-the-nasal-floor-in-complete-unilateral-cleft-lip-repair
#5
Lan Sook Chang, Yoosung Son, Rong-Min Baek, Baek-Kyu Kim
BACKGROUND: Numerous methods exist for repairing unilateral cleft lips and mainly focus on cutaneous design to achieve sufficient rotation of the medial (M) cleft lip and produce a natural Cupid's bow and philtrum. However, precise nasal floor reconstruction has not been described in detail. This is the first study to introduce a technique for repairing complete unilateral cleft lips with a focus on nasal floor reconstruction. METHODS: In our technique, "Straight-Line Advanced Release Technique (StART)," the nasal floor is considered a 3-dimensional cuboid structure; the M mucosal and lateral (L) mucosal flaps constituted the posterior surface...
May 31, 2017: Annals of Plastic Surgery
https://www.readbyqxmd.com/read/28554559/endoscopic-closure-of-septal-perforations
#6
Isam Alobid
OBJECTIVE: The management of septal perforations is a challenge for the surgeon. A wide variety of surgical techniques have been described, with different approaches. There is no scientific evidence to support a particular approach. The objective of this review is to present a practical guide on the technique of choice for each case of septal perforation. DISCUSSION: Inspection of the nasal mucosa, the size of the perforation, the location and especially the osteo-cartilaginous support, are the pillars of a successful surgery...
May 26, 2017: Acta Otorrinolaringológica Española
https://www.readbyqxmd.com/read/28550242/impact-of-groin-flap-ischemia-reperfusion-on-red-blood-cell-micro-rheological-parameters-in-a-follow-up-study-on-rats
#7
Zsuzsanna Magyar, Abel Molnar, David Belkin Nachmias, Din Mann, Viktoria Sogor, Anita Mester, Katalin Peto, Norbert Nemeth
BACKGROUND: Flap hypoperfusion or ischemia-reperfusion (I/R) may occur during preparation-transposition procedures and by postoperative thrombotic complications. Behind the microcirculatory disturbances micro-rheological alterations are also supposed. OBJECTIVE: We aimed to investigate the groin flap I/R with following-up micro-rheological parameters. METHODS: Anesthetized rats were subjected to Control or I/R groups. Groin flaps were prepared bilaterally, pedicled on the superficial epigastric vessels...
May 24, 2017: Clinical Hemorheology and Microcirculation
https://www.readbyqxmd.com/read/28529663/the-modified-dunn-procedure-for-slipped-capital-femoral-epiphysis-the-bernese-experience
#8
M Tannast, L M Jost, T D Lerch, F Schmaranzer, K Ziebarth, K A Siebenrock
PURPOSE: Based on previous investigations on the vascular blood supply to the femoral head, a technique for anatomical reduction after slipped capital femoral epiphysis was developed. This technique is a modification of the original technique by Dunn using a retinacular soft-tissue flap. This allows the visual control of the epiphyseal vascular blood supply. We report the experience at the inventor's institution with a critical discussion of the available literature. METHODS: Using a trochanteric osteotomy for surgical dislocation of the hip, a retinacular soft tissue flap is created containing the deep branch of the medial femoral circumflex artery, the external rotators and the capsule...
April 2017: Journal of Children's Orthopaedics
https://www.readbyqxmd.com/read/28513472/experimental-and-numerical-studies-of-beetle-inspired-flapping-wing-in-hovering-flight
#9
Tien Van Truong, Tuyen Quang Le, Hoon Cheol Park, Doyoung Byun
In this paper, we measure unsteady forces and visualize 3D vortices around a beetle-like flapping wing model in hovering flight by experiment and numerical simulation. The measurement of unsteady forces and flow patterns around the wing were conducted using a dynamically scaled wing model in the mineral-oil tank. The wing kinematics were directly derived from the experiment of a real beetle. The 3D flow structures of the flapping wing were captured by using air bubble visualization while forces were measured by a sensor attached at the wing base...
May 17, 2017: Bioinspiration & Biomimetics
https://www.readbyqxmd.com/read/28506450/utility-and-versatility-of-the-supraclavicular-artery-island-flap-in-head-and-neck-reconstruction
#10
José A González-García, Carlos M Chiesa-Estomba, Jon A Sistiaga, Ekhiñe Larruscain, Leire Álvarez, Xabier Altuna
INTRODUCTION: The supraclavicular island flap is a rotational pedicled flap and may have some advantages in head and neck reconstruction compared with free-tissue transfer when this kind of reconstruction is not affordable or recommended. MATERIAL AND METHODS: We present our experience during the year 2016 in the application of the supraclavicular island flap in five cases as an alternative to microvascular reconstruction in several defects after resection of head and neck tumours...
May 12, 2017: Acta Otorrinolaringológica Española
https://www.readbyqxmd.com/read/28496983/correlated-velocity-models-as-a-fundamental-unit-of-animal-movement-synthesis-and-applications
#11
Eliezer Gurarie, Christen H Fleming, William F Fagan, Kristin L Laidre, Jesús Hernández-Pliego, Otso Ovaskainen
BACKGROUND: Continuous time movement models resolve many of the problems with scaling, sampling, and interpretation that affect discrete movement models. They can, however, be challenging to estimate, have been presented in inconsistent ways, and are not widely used. METHODS: We review the literature on integrated Ornstein-Uhlenbeck velocity models and propose four fundamental correlated velocity movement models (CVM's): random, advective, rotational, and rotational-advective...
2017: Movement Ecology
https://www.readbyqxmd.com/read/28490406/closure-of-nasal-septal-perforations-with-a-polydioxanone-plate-and-temporoparietal-fascia-in-a-closed-approach
#12
Lorenz Epprecht, Christoph Schlegel, David Holzmann, Michael Soyka, Thomas Kaufmann
BACKGROUND: Septal perforation closure is still often invasive and complex, with relatively low closure rates. OBJECTIVES: We aimed to provide the first results of a case series of 20 patients with nasal septal perforations who underwent septal perforation repair by both an open and a minimally invasive technique by using a graft that consisted of temporoparietal fascia and a polydioxanone (PDS) plate without mucosal flaps. Between 2014 and 2016, we tested, for the first time, the feasibility of the insertion of this graft via a hemitransfixion incision at our institution...
May 1, 2017: American Journal of Rhinology & Allergy
https://www.readbyqxmd.com/read/28468193/removal-of-an-unusual-neglected-foreign-body-in-infratemporal-region-using-navigation
#13
Avani Jain, Gaurav Gupta, Mohnish Grover
A 19-year-old male presented with complaint of a bluish mass in the hard palate since 3 months. The patient had a history of trauma 8 years back in the left zygomatic area with a pen. It was lodged in the wound and removed at that time. Computed tomography scan was revealed a linear heterogenous dense structure extending from left infratemporal fossa to oral cavity, traversing through left maxillary sinus, with bone defect seen in lateral and medial wall of maxilla, and in the hard palate, most likely a neglected foreign body...
May 2017: Journal of Craniofacial Surgery
https://www.readbyqxmd.com/read/28466362/treatment-of-implant-exposure-due-to-skin-necroses-after-skin-sparing-mastectomy-initial-experiences-using-a-not-selective-random-epigastric-flap
#14
Estíbaliz Echazarreta-Gallego, Guillermo Pola-Bandrés, María Dolores Arribas-Del Amo, Ismael Gil-Romea, Ramón Sousa-Domínguez, Antonio Güemes-Sánchez
Breast prostheses exposure is probably the most devastating complication after a skin sparing mastectomy (SSM) and implant-based, one-stage, breast reconstruction. This complication may occur in the immediate post-operative period or in the weeks and even months after the procedure. In most cases, the cause is poor skin coverage of the implant due to skin necrosis. PATIENTS AND METHODS: Eight consecutive cases of implant exposure (or risk of exposure) due to skin necrosis in SSM patients over a period of 5 years, all patients were treated using a random epigastric rotation flap, executed by the same medical team...
May 2, 2017: World Journal of Surgery
https://www.readbyqxmd.com/read/28463224/wing-wake-interaction-destabilizes-hover-equilibrium-of-a-flapping-insect-scale-wing
#15
James Bluman, Chang-Kwon Kang
Wing-wake interaction is a characteristic nonlinear flow feature that can enhance unsteady lift in flapping flight. However, the effects of wing-wake interaction on the flight dynamics of hover are inadequately understood. We use a well-validated 2D Navier-Stokes equation solver and a quasi-steady model to investigate the role of wing-wake interaction on the hover stability of a fruit fly scale flapping flyer. The Navier-Stokes equations capture wing-wake interaction, whereas the quasi-steady models do not...
June 15, 2017: Bioinspiration & Biomimetics
https://www.readbyqxmd.com/read/28460375/experimental-evidence-that-thrust-earthquake-ruptures-might-open-faults
#16
Vahe Gabuchian, Ares J Rosakis, Harsha S Bhat, Raúl Madariaga, Hiroo Kanamori
Many of Earth's great earthquakes occur on thrust faults. These earthquakes predominantly occur within subduction zones, such as the 2011 moment magnitude 9.0 eathquake in Tohoku-Oki, Japan, or along large collision zones, such as the 1999 moment magnitude 7.7 earthquake in Chi-Chi, Taiwan. Notably, these two earthquakes had a maximum slip that was very close to the surface. This contributed to the destructive tsunami that occurred during the Tohoku-Oki event and to the large amount of structural damage caused by the Chi-Chi event...
May 1, 2017: Nature
https://www.readbyqxmd.com/read/28460192/proton-density-fat-fraction-of-rotator-cuff-muscles-is-associated-with-isometric-strength-10-years-after-rotator-cuff-repair-a-quantitative-magnetic-resonance-imaging-study-of-the-shoulder
#17
Dimitrios C Karampinos, Christian Holwein, Stefan Buchmann, Thomas Baum, Stefan Ruschke, Alexandra S Gersing, Reto Sutter, Andreas B Imhoff, Ernst J Rummeny, Pia M Jungmann
BACKGROUND: Quantitative muscle fat-fraction magnetic resonance (MR) imaging techniques correlate with semiquantitative Goutallier scores with failure after rotator cuff (RC) repair. PURPOSE: To investigate the relationship of proton density fat fraction (PDFF) of the RC muscles with semiquantitative MR scores, cartilage T2 relaxation times, and clinical isometric strength measurements in patients 10 years after unilateral RC repair. STUDY DESIGN: Cross-sectional study; Level of evidence, 3...
April 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28458964/free-style-deepithelialized-propeller-flaps-an-ideal-local-flap-to-obliterate-wounds-with-dead-space
#18
Asli Datli, HyunSuk Suh, Young Chul Kim, Doon Hoon Choi, Joon Pio Jp Hong
BACKGROUND: The reconstruction of the posterior trunk, especially with large dead spaces, remains challenging. Regional muscle flaps may lack adequate volume and reach. The purpose of this report was to evaluate the efficacy of deepithelialized free-style perforator-based propeller flaps to obliterate defects with large dead space. METHODS: A total of 7 patients with defects on the posterior trunk with large dead spaces were evaluated. After complete debridement or resection, all flaps were designed on a single perforator adjacent to the defect, deepithelialized, and then rotated in a propeller fashion...
March 2017: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/28458961/improving-pressure-ulcer-reconstruction-our-protocol-and-the-cop-cone-of-pressure-flap
#19
Francesco Gargano, Lee Edstrom, Karen Szymanski, Scott Schmidt, Jack Bevivino, Richard Zienowicz, Jennifer Stark, Helena O Taylor, Silvio Podda, Paul Liu
BACKGROUND: Surgical treatment of pressure ulcers is challenging for high recurrence rates. Deepithelialized flaps have been used previously with the aim to eliminate shearing forces and the cone of pressure (COP) effect. The goal of this study is to adopt a standardized protocol and evaluate if 2 different flap techniques affect outcomes. METHODS: The novel COP flap is illustrated. Twenty patients were prospectively treated with flap coverage over a 36-month period...
March 2017: Plastic and Reconstructive Surgery. Global Open
https://www.readbyqxmd.com/read/28458820/covering-of-an-exposed-vascular-graft-in-the-groin-with-an-external-oblique-muscle-rotational-flap
#20
Bastiaan P Vierhout, Jeroen M Smit, Clark J Zeebregts
Abdominal muscles, such as the oblique- and transverse muscles, find their blood supply from multiple segmental pedicles from the iliac artery. Besides its superior vascularization, its release is simple, leaving two abdominal muscles for securing abdominal wall strength. The release of the muscle and coverage of the graft requires partial muscle mobilization and is a minor reconstruction, but extension of the mobilization cranially enables coverage of larger defects. We present a case of an infected vascular graft in the groin successfully preserved through coverage with an external oblique muscle flap...
February 2017: Journal of Surgical Case Reports
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