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https://www.readbyqxmd.com/read/27888787/outcomes-in-chevron-osteotomy-for-hallux-valgus-in-a-large-cohort
#1
Bart van Groningen, M C Marieke van der Steen, Max Reijman, Janneke Bos, Johannes G E Hendriks
Clinical and radiological related outcomes have been reported for Chevron osteotomy as correction for mild to moderate hallux valgus, but only for relatively small patient series. Moreover, evaluation of the patient's point of view has mostly been conducted by means of more physician-based outcome measures. The goal of this study was to evaluate the effect of the Chevron osteotomy for hallux valgus on patients' daily lives using the Foot and Ankle Outcome Score (FAOS) as a validated and a hallux valgus specific patient reported outcome measure (PROM)...
September 19, 2016: Foot
https://www.readbyqxmd.com/read/27830290/a-new-armored-archosauriform-diapsida-archosauromorpha-from-the-marine-middle-triassic-of-china-with-implications-for-the-diverse-life-styles-of-archosauriforms-prior-to-the-diversification-of-archosauria
#2
Chun Li, Xiao-Chun Wu, Li-Jun Zhao, Sterling J Nesbitt, Michelle R Stocker, Li-Ting Wang
Reptiles have a long history of transitioning from terrestrial to semi-aquatic or aquatic environments that stretches back at least 250 million years. Within Archosauria, both living crocodylians and birds have semi-aquatic members. Closer to the root of Archosauria and within the closest relatives of the clade, there is a growing body of evidence that early members of those clades had a semi-aquatic lifestyle. However, the morphological adaptations to a semi-aquatic environment remain equivocal in most cases...
December 2016: Die Naturwissenschaften
https://www.readbyqxmd.com/read/27811391/random-access-actuation-of-nanowire-grid-metamaterial
#3
Pablo Cencillo-Abad, Jun-Yu Ou, Eric Plum, João Valente, Nikolay I Zheludev
While metamaterials offer engineered static optical properties, future artificial media with dynamic random-access control over shape and position of meta-molecules will provide arbitrary control of light propagation. The simplest example of such a reconfigurable metamaterial is a nanowire grid metasurface with subwavelength wire spacing. Recently we demonstrated computationally that such a metadevice with individually controlled wire positions could be used as dynamic diffraction grating, beam steering module and tunable focusing element...
December 2, 2016: Nanotechnology
https://www.readbyqxmd.com/read/27810025/cost-effectiveness-of-different-techniques-in-hallux-valgus-surgery
#4
Emilio Wagner, Cristian Ortiz, Karen Torres, Ivan Contesse, Omar Vela, Diego Zanolli
BACKGROUND: Different surgical techniques are available to correct each type of Hallux Valgus (HV) deformity, and all present similar good results. No information is available relative to the cost of each technique compared to their individual success. OBJECTIVE: To determine the cost-effectiveness-ratio (CER) of five different techniques for HV. METHODS: We included 245HV surgeries performed in 179 patients. The severity was defined according to radiological parameters...
December 2016: Foot and Ankle Surgery: Official Journal of the European Society of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/27771139/correlative-analysis-of-cement-dentin-interfaces-using-an-interfacial-fracture-toughness-and-micro-tensile-bond-strength-approach
#5
Evelise M Souza, Jan De Munck, Pong Pongprueksa, Annelies Van Ende, Bart Van Meerbeek
OBJECTIVES: To determine the interfacial fracture toughness (iFT) and micro-tensile strength (μTBS) of composite cements bonded to dentin. METHODS: Fifty feldspar ceramic blocks (Vita Mark II, Vita Zahnfabrik) were luted onto dentin using two self-adhesive (G-CEM LinkAce, GC; SpeedCEM, Ivoclar Vivadent), two self-etch (Multilink Primer & Multilink Automix, Ivoclar Vivadent; Scotchbond Universal & RelyX Ultimate, 3 M ESPE), and one etch-and-rinse (Excite F DSC & Variolink II, Ivoclar Vivadent) composite cement (n=10)...
December 2016: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/27694269/distal-metatarsal-osteotomy-for-moderate-to-severe-hallux-valgus
#6
Spenser J Cassinelli, Renee Herman, Thomas G Harris
: Hallux valgus is the most common disorder of the hallux and often results in pain, functional disability, and impaired gait patterns. The goals of surgical management are to correct the deformity while improving patients' pain and function. Traditional treatment of moderate to severe hallux valgus deformities consist of proximal osteotomy and/or arthrodesis given their powerful corrective ability. Despite their corrective power, proximal osteotomies are more technically demanding, have a higher rate of complications, and require a more restricted post-operative recovery...
October 2016: Foot & Ankle International
https://www.readbyqxmd.com/read/27667958/how-reliably-can-northeast-atlantic-sand-lances-of-the-genera-ammodytes-and-hyperoplus-be-distinguished-a-comparative-application-of-morphological-and-molecular-methods
#7
Ralf Thiel, Thomas Knebelsberger
Accurate stock assessments for each of the dominant species of sand lances in the northeast Atlantic Ocean and adjacent areas are not available due to the lack of a reliable identification procedure; therefore, appropriate measures of fisheries management or conservation of sand lances cannot be implemented. In this study, detailed morphological and molecular features are assessed to discriminate between four species of sand lances belonging to the genera Ammodytes and Hyperoplus. Morphological characters described by earlier authors as useful for identification of the genera are confirmed, and two additional distinguishing characters are added...
2016: ZooKeys
https://www.readbyqxmd.com/read/27660292/comparison-of-postoperative-height-changes-of-the-second-metatarsal-among-3-osteotomy-methods-for-hallux-valgus-deformity-correction
#8
Jun Young Choi, Yu Min Suh, Ji Woong Yeom, Jin Soo Suh
BACKGROUND: We aimed to compare the postoperative height of the second metatarsal head relative to the first metatarsal head using axial radiographs among 3 different commonly used osteotomy techniques: proximal chevron metatarsal osteotomy (PCMO), scarf osteotomy, and distal chevron metatarsal osteotomy (DCMO). METHODS: We retrospectively reviewed the radiographs and clinical findings of the patients with painful callosities under the second metatarsal head, complicated by hallux valgus, who underwent isolated PCMO, scarf osteotomy, or DCMO from February 2005 to January 2015...
September 22, 2016: Foot & Ankle International
https://www.readbyqxmd.com/read/27598613/-comparison-of-90%C3%A2-and-180%C3%A2-plate-constructions-for-comminuted-distal-humerus-fractures-in-adults-and-effects-on-clinical-results
#9
Volkan Eryuva, Taşkın Altay, Cemil Kayalı, Zafer Kement, Caner Çıtak
BACKGROUND: The present objective was to compare 90° and 180° double-plate constructions for complex distal humerus fractures, as well as to evaluate superiority of construction type. METHODS: Retrospectively evaluated were 17 patients treated for type C distal humerus fracture according to AO/ASIF classification between January 2009 and January 2013. All attended minimum 6-month follow-up. Elbow function was assessed with anteroposterior and lateral x-ray, and Mayo elbow performance score evaluation at outpatient clinics...
July 2016: Ulusal Travma Ve Acil Cerrahi Dergisi, Turkish Journal of Trauma & Emergency Surgery: TJTES
https://www.readbyqxmd.com/read/27597427/treatment-of-crowe-type-iv-hip-dysplasia-using-cementless-total-hip-arthroplasty-and-double-chevron-subtrochanteric-shortening-osteotomy-a-5-to-10-year-follow-up-study
#10
Xigong Li, Yang Lu, Junying Sun, Xiangjin Lin, Tiansi Tang
BACKGROUND: The purpose of this study was to evaluate the functional and radiographic results of patients with Crowe type-IV hip dysplasia treated by cementless total hip arthroplasty and double chevron subtrochanteric osteotomy. METHODS: From January 2000 to February 2006, cementless total hip arthroplasty with a double chevron subtrochanteric shortening osteotomy was performed on 18 patients (22 hips) with Crowe type-IV dysplasia. The acetabular cup was placed in the position of the anatomic hip center, and subtrochanteric femoral shortening osteotomy was performed with the use of a double chevron design...
August 10, 2016: Journal of Arthroplasty
https://www.readbyqxmd.com/read/27587521/correction-of-moderate-to-severe-hallux-valgus-with-combined-proximal-opening-wedge-and-distal-chevron-osteotomies-a-reliable-technique
#11
L Jeyaseelan, S Chandrashekar, A Mulligan, H A Bosman, A J S Watson
AIMS: The mainstay of surgical correction of hallux valgus is first metatarsal osteotomy, either proximally or distally. We present a technique of combining a distal chevron osteotomy with a proximal opening wedge osteotomy, for the correction of moderate to severe hallux valgus. PATIENTS AND METHODS: We reviewed 45 patients (49 feet) who had undergone double osteotomy. Outcome was assessed using the American Orthopaedic Foot and Ankle Society (AOFAS) and the Short Form (SF) -36 Health Survey scores...
September 2016: Bone & Joint Journal
https://www.readbyqxmd.com/read/27557110/a-unique-assemblage-of-engraved-plaquettes-from-ein-qashish-south-jezreel-valley-israel-figurative-and-non-figurative-symbols-of-late-pleistocene-hunters-gatherers-in-the-levant
#12
Alla Yaroshevich, Ofer Bar-Yosef, Elisabeta Boaretto, Valentina Caracuta, Noam Greenbaum, Naomi Porat, Joel Roskin
Three engraved limestone plaquettes from the recently excavated Epipaleolithic open-air site Ein Qashish South in the Jezreel Valley, Israel comprise unique evidence for symbolic behavior of Late Pleistocene foragers in the Levant. The engravings, uncovered in Kebaran and Geometric Kebaran deposits (ca. 23ka and ca. 16.5ka BP), include the image of a bird-the first figurative representation known so far from a pre-Natufian Epipaleolithic-along with geometric motifs such as chevrons, crosshatchings and ladders...
2016: PloS One
https://www.readbyqxmd.com/read/27538161/-surgery-for-renal-carcinoma-with-supradiaphragmatic-tumor-thrombus-avoiding-sternotomy-and-cardiopulmonary-bypass
#13
G L Wang, H Bi, J F Ye, H X Zhang, L L Ma
OBJECTIVE: To describe a feasible surgical technique for patients with renal cell carcinoma associated with a supradiaphragmatic tumor thrombus that avoids cardiopulmonary bypass procedure. METHODS: We retrospectively analyzed 2 cases with right kidney tumor and tumor thrombus above the diaphragm treated in April and August, 2015. The two patients were both female, aged 73 and 67 years. The tumor sizes of right kidneys were 7.0 cm×6.3 cm×5.7 cm and 8.7 cm×7.0 cm×5...
February 18, 2016: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/27524702/percutaneous-surgery-for-severe-hallux-valgus
#14
REVIEW
Joel Vernois, David J Redfern
Severe hallux valgus is a challenge to treat. If the basal osteotomy is a well known surgery for severe deformity, the chevron osteotomy is usually used in mild to moderate deformity. With a accurent fixation the chevron can also be used in severe deformity. Both techniques can be performed percutaneously and offer reliable techniques.
September 2016: Foot and Ankle Clinics
https://www.readbyqxmd.com/read/27524701/percutaneous-surgery-for-mild-to-moderate-hallux-valgus
#15
REVIEW
Peter Lam, Moses Lee, Jerry Xing, Martin Di Nallo
Patients who undergo percutaneous chevron-Akin osteotomies have less pain at follow-up, greater correction of hallux valgus angle, and a shorter operation time compared with open osteotomies. Stable fixation of the chevron osteotomy allows early full weight bearing and mobilization of the first metatarsophalangeal joint. This article describes the surgery technique, including reduction of the first metatarsal head after translation, accurate positioning of the proximal first metatarsal fixation screw, and removal of the dorsomedial prominence of the first metatarsal head...
September 2016: Foot and Ankle Clinics
https://www.readbyqxmd.com/read/27515611/a-new-two-pored-species-of-amphisbaena-squamata-amphisbaenidae-from-the-brazilian-cerrado-with-a-key-to-the-two-pored-species-of-amphisbaena
#16
Síria Ribeiro, Jerriane O Gomes, Helder Lúcio Rodrigues Da Silva, Carlos Eduardo D Cintra, Nelson Jorge Da Jr Silva
A new species of Amphisbaena is described from municipalities of Babaçulândia, State of Tocantins, and Estreito, State of Maranhão, northern Brazilian Cerrado. The new species differs from other two-pored species of the genus, by presenting mainly slender body shape; snout rounded in profile and dorsal view; high number of body annuli (328-342); 12-14 dorsal segments and 14-16 ventral in midbody half-annulus; autotomic site between 9-10<sup>th</sup> caudal annuli; absence of chevron-shaped anterior dorsal half-annuli; 20-23 caudal annuli; postmalar row absent; and precloacals pores arranged in a continuous series of the precloacal half-annuli...
2016: Zootaxa
https://www.readbyqxmd.com/read/27502227/modified-chevron-osteotomy-for-hallux-valgus-deformity-in-female-athletes-a-2-year-follow-up-study
#17
Dimitrios Giotis, Nikolaos K Paschos, Franceska Zampeli, Dionisios Giannoulis, Apostolos Gantsos, George Mantellos
BACKGROUND: Hallux valgus is an increasingly common deformity in young female athletes that constricts their daily athletic activities and influences foot cosmesis. The aim of this study was to evaluate the outcome of modified Chevron osteotomy for hallux valgus deformity in this specific population. METHODS: Forty-two cases of modified Chevron osteotomies were carried out in 33 patients with mild to moderate hallux valgus deformity. Each participant was evaluated for AOFAS score, pain, range of motion, cosmetic and radiological outcome...
September 2016: Foot and Ankle Surgery: Official Journal of the European Society of Foot and Ankle Surgeons
https://www.readbyqxmd.com/read/27501989/on-the-feasibility-of-the-chevron-notch-beam-method-to-measure-fracture-toughness-of-fine-grained-zirconia-ceramics
#18
Andreas Kailer, Marc Stephan
OBJECTIVE: The fracture toughness determination of fine-grained zirconia ceramics using the chevron notched beam method (CNB) was investigated to assess the feasibility of this method for quality assurance and material characterization. METHODS: CNB tests were performed using four different yttria-stabilized zirconia ceramics under various testing modes and conditions, including displacement-controlled and load-rate-controlled four point bending to assess the influence of slow crack growth and identify most suitable test parameters...
October 2016: Dental Materials: Official Publication of the Academy of Dental Materials
https://www.readbyqxmd.com/read/27458978/heterostructures-through-divergent-edge-reconstruction-in-nitrogen-doped-segmented-graphene-nanoribbons
#19
Tomas Marangoni, Danny Haberer, Daniel J Rizzo, Ryan R Cloke, Felix R Fischer
Atomically precise engineering of defined segments within individual graphene nanoribbons (GNRs) represents a key enabling technology for the development of advanced functional device architectures. Here, the bottom-up synthesis of chevron GNRs decorated with reactive functional groups derived from 9-methyl-9H-carbazole is reported. Scanning tunneling and non-contact atomic force microscopy reveal that a thermal activation of GNRs induces the rearrangement of the electron-rich carbazole into an electron-deficient phenanthridine...
September 5, 2016: Chemistry: a European Journal
https://www.readbyqxmd.com/read/27441925/olecranon-osteotomy-with-tension-band-wire-repair
#20
David A Fuller
PURPOSE: The purpose of this video is to demonstrate the surgical technique of olecranon osteotomy with tension band wire repair. METHODS: A patient with a comminuted, intra-articular distal humerus fracture requiring ORIF is presented in this video demonstration of the surgical technique of an olecranon osteotomy. The olecranon osteotomy is an established technique for approaching the distal humerus for surgical repair of fracture. In the video, the patient is positioned laterally allowing a dorsal incision...
August 2016: Journal of Orthopaedic Trauma
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