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https://www.readbyqxmd.com/read/28079731/midterm-radiographic-and-functional-outcomes-of-the-anterior-internal-pelvic-fixator-infix
#1
Rahul Vaidya, Adam Jonathan Martin, Matthew Roth, Frederick Tonnos, Bryant Oliphant, Jon Carlson
OBJECTIVE: To describe our experience using the anterior internal pelvic fixator (INIFX) for treating pelvic ring injuries. DESIGN: Case Series SETTING:: Level 1 Trauma Center PATIENTS:: Eighty-three patients with pelvic ring injuries treated with INFIX. Follow up avg. 35 months (range 12-80.33) INTERVENTION:: Surgical treatment of pelvic ring injuries included reduction, appropriate posterior fixation, and INFIX placement. OUTCOME MEASUREMENTS: Reduction using the pelvic deformity index (PDI) and pubic symphysis(PS) widening, Majeed functional scores, complications; infection, implant failure, heterotopic ossification (HO), nerve injury, and pain...
January 5, 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28078361/infix-versus-plating-for-pelvic-fractures-with-disruption-of-the-symphysis-pubis
#2
Rahul Vaidya, Adam Jonathan Martin, Matthew Roth, Kerellos Nasr, Petra Gheraibeh, Frederick Tonnos
PURPOSE: The purpose of this study is to compare INFIX to plating in the treatment of unstable pelvic ring injuries with disruption of the symphysis. METHODS: Twenty-four patients treated with INFIX were compared to 28 patients fixed by plating. All patients had anterior and posterior fixation. Injuries were classified using the Young and Burgess and AO/OTA classification systems. Reductions of the pelvic ring were assessed using the pelvic deformity index (PDI) and symphyseal widening...
January 11, 2017: International Orthopaedics
https://www.readbyqxmd.com/read/28058661/an-old-mismanaged-lisfranc-injury-treated-by-gradual-deformity-correction-followed-by-the-second-stage-internal-fixation
#3
Mehraj D Tantray, Khurshid Kangoo, Asif Nazir, Muzamil Baba, Raja Rameez, Syed Tabish, Syed Shahnawaz
The Lisfranc fracture-dislocation of the foot is uncommon and diagnosis is often missed. The Lisfranc joint involves the articulation between medial cuneiform and base of the second metatarsal and is considered a keystone to structural integrity to the midfoot. The articulation has a stabilization effect on longitudinal and transverse arches of the foot. A neglected or untreated injury to the Lisfranc joint can lead to secondary arthritis and significant morbidity and disability. We present a case of a neglected Lisfranc fracture-dislocation in a 28-year-old female patient who presented 3 months after injury...
January 5, 2017: Strategies in Trauma and Limb Reconstruction
https://www.readbyqxmd.com/read/28057632/are-two-retrograde-3-5-mm-screws-superior-to-one-7-3-mm-screw-for-anterior-pelvic-ring-fixation-in-bones-with-low-bone-mineral-density
#4
Y P Acklin, I Zderic, S Grechenig, R G Richards, P Schmitz, B Gueorguiev
OBJECTIVES: Osteosynthesis of anterior pubic ramus fractures using one large-diameter screw can be challenging in terms of both surgical procedure and fixation stability. Small-fragment screws have the advantage of following the pelvic cortex and being more flexible.The aim of the present study was to biomechanically compare retrograde intramedullary fixation of the superior pubic ramus using either one large- or two small-diameter screws. MATERIALS AND METHODS: A total of 12 human cadaveric hemipelvises were analysed in a matched pair study design...
January 2017: Bone & Joint Research
https://www.readbyqxmd.com/read/28053385/outcome-of-distraction-osteogenesis-by-ring-fixator-in-infected-large-bone-defects-of-tibia
#5
Rajesh Rohilla, Karan Siwach, Ashish Devgan, Roop Singh, Jitendra Wadhwani, Naseem Ahmed
BACKGROUND: Salvage of large, infected bone defects in tibia poses a formidable problem. The present prospective study aimed to evaluate radiologic and functional outcome of ring fixator in infected, large (≥6 cm) bone defects of tibia treated with distraction osteogenesis. MATERIALS AND METHODS: The study included 35 patients (30 males and 5 females) who had minimum of 6 cm gap after radical resection of necrotic bone and presence or history of active infection...
October 2016: Journal of Clinical Orthopaedics and Trauma
https://www.readbyqxmd.com/read/28030509/impact-of-early-operative-pelvic-fixation-on-long-term-self-reported-outcome-following-severe-pelvic-fracture
#6
John P Sharpe, Louis J Magnotti, Wade C Gobbell, Xin Huang, Edward A Perez, Timothy C Fabian, Martin A Croce
BACKGROUND: Traumatic disruption of the pelvic ring is a significant cause of life-threatening hemorrhage. For those patients who survive the initial injury, these fractures are associated with long periods of immobilization and intense rehabilitation. There is little published information available regarding long-term functional outcomes in these patients. This study evaluated the impact of severe pelvic fractures on those long-term outcomes. METHODS: All patients with severe pelvic fractures over an 18-year period were identified...
December 23, 2016: Journal of Trauma and Acute Care Surgery
https://www.readbyqxmd.com/read/28017873/open-reduction-internal-fixation-versus-percutaneous-iliosacral-screw-fixation-for-unstable-posterior-pelvic-ring-disruptions
#7
Mohamed Mansour Elzohairy, Adel Mohamed Salama
BACKGROUND: Surgical stabilization of posterior pelvic ring fractures can be achieved by either open or closed methods. They all provide a comparable biomechanical stability. The aim of the present study is to comparethe clinical results of both techniques for treating posterior pelvic ring injuries. MATERIAL AND METHODS: Seventy patientsoperated for unstable posterior pelvic ring disruptions wereretrospectively reviewed. We compared 35 patients treated by open reduction internal fixation (ORIFgroup)versus35 patients stabilized by using closed reduction and percutaneous iliosacral screw fixation (CRIF group) under fluoroscopic guidance...
December 22, 2016: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/28012552/smoking-cessation-advice-in-limb-reconstruction-an-opportunity-not-to-be-missed
#8
J Ring, A Shoaib, R Shariff
The adverse health effects of smoking are well known, including its effects on the musculoskeletal system. Limb reconstruction using external fixators is a high intensity process with high levels of patient contact time, complications and cost. The aim of this study was to examine smoking patterns in this group and in particular to assess trends in smoking cession. Data was collected from 41 patients all undergoing treatment using circular frame external fixation, for a variety of pathologies, most commonly acute tibial trauma...
December 11, 2016: Injury
https://www.readbyqxmd.com/read/28006073/accuracy-of-eye-position-for-saccades-and-smooth-pursuit
#9
Natela Shanidze, Saeideh Ghahghaei, Preeti Verghese
In this study, we address the question of whether a target is foveated during smooth pursuit. Specifically, we examine whether smooth pursuit eye movements land near the center-of-mass of the target, as is the case for saccades. To that end, we instructed eight untrained, healthy participants to follow moving targets, presented monocularly in a scanning laser ophthalmoscope. Stimuli moved either in a modified step-ramp (smooth pursuit), or made a single step (saccade), stepping 6° from the center. Targets were ring-shaped and either 0...
December 1, 2016: Journal of Vision
https://www.readbyqxmd.com/read/27997465/does-lumbopelvic-fixation-add-stability-a-cadaveric-biomechanical-analysis-of-an-unstable-pelvic-fracture-model
#10
Ehsan Jazini, Noelle Klocke, Oliver Tannous, Herman S Johal, John Hao, Kanaan Salloum, Daniel E Gelb, Jason W Nascone, Eric Belin, C Max Hoshino, Mir Hussain, Robert V OʼToole, Brandon Bucklen, Steven C Ludwig
OBJECTIVE: We sought to determine the role of lumbopelvic fixation (LPF) in the treatment of zone II sacral fractures with varying levels of sacral comminution combined with anterior pelvic ring (PR) instability. We also sought to determine the proximal extent of LPF necessary for adequate stabilization and the role of LPF in complex sacral fractures when only 1 transiliac-transsacral (TI-TS) screw is feasible. MATERIALS AND METHODS: Fifteen L4 to pelvis fresh-frozen cadaveric specimens were tested intact in flexion-extension (FE) and axial rotation (AR) in a bilateral stance gliding hip model...
January 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/27939280/multicenter-trial-of-an-internal-joint-stabilizer-for-the-elbow
#11
Jorge L Orbay, David Ring, Amir R Kachooei, Jose Santiago-Figueroa, Luis Bolano, Miguel Pirela-Cruz, Michael Hausman, Rick F Papandrea
BACKGROUND: Our primary efficacy objective was to evaluate the effectiveness of the internal joint stabilizer of the elbow (IJS-E) in maintaining concentric location of the elbow during and after removal of the device in the treatment of persistent or recurrent instability after elbow fracture or dislocations, or both. The secondary study objectives were to assess range of motion, Broberg-Morrey functional score, Broberg-Morrey categorical rating, the Disabilities of the Arm, Shoulder and Hand score, and the rate of complications and adverse events after the use of IJS-E...
January 2017: Journal of Shoulder and Elbow Surgery
https://www.readbyqxmd.com/read/27933259/deformity-correction-and-extremity-lengthening-in-the-lower-leg-comparison-of-clinical-outcomes-with-two-external-surgical-procedures
#12
Eugen Reitenbach, Robert Rödl, Georg Gosheger, Björn Vogt, Frank Schiedel
OBJECTIVE: Distraction osteogenesis is a method of stimulating the growth of new bone tissue in order to lengthen the extremities or bridge resected bone defects. In addition to the now-established intramedullary procedures, two different fixator systems are in use. The present study investigated the classical Ilizarov ring fixator (IRF) and a hexapod to assess the precision of lower-leg lengthening and complications classified using the Paley criteria for problems, obstacles, and complications...
2016: SpringerPlus
https://www.readbyqxmd.com/read/27906770/the-effect-of-two-factors-on-interobserver-reliability-for-proximal-humeral-fractures
#13
Jos J Mellema, Michael T Kuntz, Thierry G Guitton, David Ring
INTRODUCTION: The purpose of this study was to assess whether training observers and simplifying proximal humeral fracture classifications improve interobserver reliability among a large number of orthopaedic surgeons. METHODS: One hundred eighty-five observers were randomized to receive training or no training in a simple classification for proximal humeral fractures before evaluating preoperative radiographs of a consecutive series of 30 patients who were treated with open reduction and internal fixation...
January 2017: Journal of the American Academy of Orthopaedic Surgeons
https://www.readbyqxmd.com/read/27902850/biomechanical-comparison-of-2-veterinary-locking-plates-to-monocortical-screw-polymethylmethacrylate-fixation-in-canine-cadaveric-cervical-vertebral-column
#14
Bianca F Hettlich, Geoffrey T Fosgate, Alan S Litsky
OBJECTIVE: To compare the biomechanical properties of 2 veterinary locking plates and monocortical screws/polymethylmethacrylate (PMMA) fixation in canine cadaveric cervical vertebral columns. STUDY DESIGN: Biomechanical cadaveric study. MATERIALS: Nineteen cervical vertebral columns (C2-C7) from large breed, skeletally mature, canine cadavers were used. A cortical ring was placed as a disk spacer at C4-C5 in all specimens. Seven vertebral columns were plated at C4-C5 with two 4-hole, 3...
November 30, 2016: Veterinary Surgery: VS
https://www.readbyqxmd.com/read/27896679/what-are-the-biomechanical-properties-of-the-taylor-spatial-frame%C3%A2
#15
Daniel J Henderson, Jeremy L Rushbrook, Paul J Harwood, Todd D Stewart
BACKGROUND: The Taylor Spatial Frame™ (TSF) is a versatile variant of the traditional Ilizarov circular fixator. Although in widespread use, little comparative data exist to quantify the biomechanical effect of substituting the tried-and-tested Ilizarov construct for the TSF hexapod system. QUESTIONS/PURPOSES: This study was designed to investigate the mechanical properties of the TSF system under physiologic loads, with and without the addition of a simulated bone model, with comparison to the standard Ilizarov frame...
November 28, 2016: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/27895373/percutaneous-ilio-sacral-screw-fixation-for-unstable-pelvic-ring-injuries
#16
Muhammad Suhail Amin, Muhammad Khurram Habib, Ammar Khalid
This prospective interventional study was planned to determine the clinical and radiological outcome of percutaneous iliosacral screw fixation for unstable pelvic ring injuries. It was conducted from March 2008 to June 2014 at the Department of Orthopaedic Surgery Combined Military Hospital (CMH) at Lahore, Multan, Rawalpindi and Muzaffarabad. It comprised 50 patients with unstable pelvic ring injuries. Visual analogue scale (VAS), Majeed pelvic score and Lindahl criteria were used for functional and radiological outcomes assessment...
October 2016: JPMA. the Journal of the Pakistan Medical Association
https://www.readbyqxmd.com/read/27891543/dynamic-neighbouring-participation-of-nitrogen-lone-pairs-on-the-chromogenic-behaviour-of-trans-bis-salicylaldiminato-pt-ii-coordination-platforms
#17
Takumi Hashimoto, Kanako Fukumoto, Ngoc Ha-Thu Le, Tatsuya Matsuoka, Soichiro Kawamorita, Naruyoshi Komiya, Takeshi Naota
The participation of neighbouring nitrogen lone pairs in the chromogenic control of trans-bis(salicylaldiminato)Pt(ii) platforms was examined, using newly designed Pt analogues bearing salicylaldehyde hydrazone ligands. A series of non-vaulted and vaulted Pt complexes (1-5) with salicylaldehyde hydrazones as trans-coordinated bidentate ligands were synthesized and characterized with regard to the chromogenic behaviour of the trans-bis(salicylaldiminato)Pt(ii) coordination platforms. X-ray diffraction and 2D NMR data demonstrated that, in the case of the non-vaulted N-monomethyl complexes 1, there was significant participation of neighbouring N(2) lone pairs in the d-π conjugation of the trans-bis(salicylaldiminato)Pt(ii) platforms owing to conformational fixation arising from intramolecular hydrogen bonding...
December 6, 2016: Dalton Transactions: An International Journal of Inorganic Chemistry
https://www.readbyqxmd.com/read/27890833/pulse-wave-analysis-after-treatment-of-abdominal-aortic-aneurysms-with-the-ovation-device
#18
Efstratios Georgakarakos, Christos Argyriou, George S Georgiadis, Miltos K Lazarides
BACKGROUND: Ovation aortic stent-graft system is a new device for the endovascular treatment of Abdominal Aortic Aneurysms achieving fixation via a 35-mm long, rigid anchored suprarenal stent and sealing stent at the infrarenal level by a means of a polymer-filling pair of inflatable O-rings, which cause narrowing of flow lumen and regional stenosis. Thus, concerns have been raised regarding hemodynamic consequences associated with this new design. Our preliminary report showed no significant increase of aortic pulse wave velocity (aPWV) immediately after implantation of the ovation in 3 patients...
November 25, 2016: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/27866940/anterior-pre-tensioned-external-fixator-for-pelvic-fractures-and-dislocations-initial-clinical-series
#19
A Queipo-de-Llano, M Lombardo-Torre, A Leiva-Gea, F B Delgado-Rufino, F Luna-González
In the treatment of unstable pelvic ring fractures, external fixators have the limitation of not adequately stabilizing the injured posterior elements. This article presents a novel and simple technique of temporary external fixation of the pelvic ring, able to produce compression of both the anterior and posterior pelvic elements. A curved flexible carbon-fiber rod is used, pre-tensioned before attachment to supra-acetabular Schanz screws. Although more extensive clinical experience is required, favorable preliminary results in a series of 13 patients with unstable pelvic fracture were encouraging: the aim of closing the posterior and anterior elements of the pelvic ring was achieved in all cases treated with this technique, and 12 patients survived...
December 2016: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/27860395/efficient-hydrogen-storage-and-production-using-a-catalyst-with-an-imidazoline-based-proton-responsive-ligand
#20
Lin Wang, Naoya Onishi, Kazuhisa Murata, Takuji Hirose, James T Muckerman, Etsuko Fujita, Yuichiro Himeda
A series of new imidazoline-based iridium complexes has been developed for hydrogenation of CO2 and dehydrogenation of formic acid. One of the proton-responsive complexes bearing two -OH groups at ortho and para positions on a coordinating pyridine ring (3 b) can catalyze efficiently the chemical fixation of CO2 and release H2 under mild conditions in aqueous media without using organic additives/solvents. Notably, hydrogenation of CO2 can be efficiently carried out under CO2 and H2 at atmospheric pressure in basic water by 3 b, achieving a turnover frequency of 106 h(-1) and a turnover number of 7280 at 25 °C, which are higher than ever reported...
November 15, 2016: ChemSusChem
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