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https://www.readbyqxmd.com/read/27906770/the-effect-of-two-factors-on-interobserver-reliability-for-proximal-humeral-fractures
#1
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...
November 30, 2016: 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
#2
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
#3
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
#4
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
#5
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...
November 28, 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
#6
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 ancored 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 desing . Our preliminary report showed no significant increase of aortic pulse wave velocity (aPWV) immediately after implantation of the Ovation in 3 patients...
November 24, 2016: Annals of Vascular Surgery
https://www.readbyqxmd.com/read/27866940/anterior-pre-tensioned-external-fixator-for-pelvic-fractures-and-dislocations-initial-clinical-series
#7
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-an-iridium-catalyst-with-an-imidazoline-based-proton-responsive-ligand-in-water
#8
Lin Wang, Onishi Naoya, 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 (3b) can efficiently catalyze the chemical fixation of CO2 and release H2 under mild conditions in aqueous media without use of organic additives/solvents. Notably, hydrogenation of CO2 can be efficiently carried out under an atmospheric pressure of CO2 and H2 in basic water by 3b, achieving a turnover frequency (TOF) of 106 h-1 and a turnover number (TON) of 7280 at 25 °C, which are higher than ever reported...
November 15, 2016: ChemSusChem
https://www.readbyqxmd.com/read/27847854/spinopelvic-fixation-of-sacroiliac-joint-fractures-and-fracture-dislocations-a-clinical-8-years-follow-up-study
#9
Mohammad R Sobhan, Seyed Mohammad J Abrisham, Mahmood Vakili, Saeed Shirdel
BACKGROUND: Pelvic ring injuries and sacroiliac dislocations have significant impacts on patient's quality of life. Several techniques have been described for posterior pelvic fixation. The current study has been designed to evaluate the spinopelvic method of fixation for sacroiliac fractures and fracture-dislocations. METHODS: Between January 2006 and December 2014, 14 patients with sacroiliac joint fractures, dislocation and fracture-dislocation were treated by Spinopelvic fixation at Shahid Sadoughi Training Hospital, Yazd, Iran...
October 2016: Archives of Bone and Joint Surgery
https://www.readbyqxmd.com/read/27844229/one-step-reconstruction-with-a-3d-printed-custom-made-prosthesis-after-total-en-bloc-sacrectomy-a-technical-note
#10
Ran Wei, Wei Guo, Tao Ji, Yidan Zhang, Haijie Liang
BACKGROUND: Surgeries for primary malignancies involving upper sacrum require total en bloc sacrectomy followed by complex mechanical reconstruction, which might be simplified by application of the three-dimensional (3D) printing technique. PURPOSES: To describe the design of a 3D-printed custom-made prosthesis for reconstruction after total en bloc sacrectomy, the surgical technique, and the clinical and functional outcome of a patient. METHODS: A 62-year-old patient with recurrent sacral chordoma was admitted in our center...
November 14, 2016: European Spine Journal
https://www.readbyqxmd.com/read/27829030/smaller-fixation-target-size-is-associated-with-more-stable-fixation-and-less-variance-in-threshold-sensitivity
#11
Kazunori Hirasawa, Kana Okano, Risako Koshiji, Wakana Funaki, Nobuyuki Shoji
The aims of this randomized observational case control study were to quantify fixation behavior during standard automated perimetry (SAP) with different fixation targets and to evaluate the relationship between fixation behavior and threshold variability at each test point in healthy young participants experienced with perimetry. SAP was performed on the right eyes of 29 participants using the Octopus 900 perimeter, program 32, dynamic strategy. The fixation targets of Point, Cross, and Ring were used for SAP...
2016: PloS One
https://www.readbyqxmd.com/read/27825365/a-prospective-case-series-for-a-minimally-invasive-internal-fixation-device-for-anterior-pelvic-ring-fractures
#12
Wayne Hoskins, Andrew Bucknill, James Wong, Edward Britton, Rodney Judson, Kellie Gumm, Roselyn Santos, Rohan Sheehy, Xavier Griffin
BACKGROUND: External fixation is commonly used as a means of definitive fixation of pelvic fractures. Pin site infection is common, with some cases of osteomyelitis and inpatient nursing can be challenging. The aim of this study is to report the outcomes and complications of an alternative minimally invasive technique, known as INFIX, utilising spinal pedicle screws inserted into the supra-acetabular bone and connected by a subcutaneous rod. METHODS: A single-centre prospective case series was performed...
November 8, 2016: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/27823759/are-antibiotic-nails-effective-in-the-treatment-of-infected-tibial-fractures
#13
Rachel M Reilly, Thomas Robertson, Robert V O'Toole, Theodore T Manson
BACKGROUND: Antibiotic-impregnated cement nails are used to treat postoperative deep infections after primary intramedullary nail insertion for the treatment of tibial fractures. Few data exist regarding the efficacy of this treatment strategy. We hypothesized that such treatment with antibiotic nails results in a high rate of infection clearance at intermediate follow-up. METHODS: We conducted a retrospective review at our Level I trauma center. Patients who received intramedullary nails to stabilize tibial fractures (from 2000 to 2011) and subsequently required antibiotic nails to treat deep postoperative infection (n=55) were considered for study inclusion...
December 2016: Injury
https://www.readbyqxmd.com/read/27795765/-surgical-management-of-sacroiliac-joint-lesions-in-unstable-pelvic-ring-fractures-using-percutaneous-iliosacral-screw-fixation
#14
Mohamed Amine Karabila, Ismail Hmouri, Tarik Madani, Younes Mhamdi, Mohamed Azouz, Mohamed Kharmaz, Mohamed Ouadaghiri, Moulay Omar Lamrani, Abdou Lahlou, Ahmed Bardouni, Mustapha Mahfoud, Mohamed Saleh Berrada, Christian Vasile
Pelvic fractures, usually are multiple, unstable fractures occuring most frequently due to violent traumatic events. Orthopedic treatment of these lesions is often distressing both to patients and medical personnel since it requires bed discharge or sometimes tractions which can have a duration up to 45 days and can compromise the static and the walking mechanisms; open operative management is difficult, carrying a significant burden in terms of morbidity and associated with vascular (venous plexus), nervous (sacred roots) or septic risk to take into account...
2016: Pan African Medical Journal
https://www.readbyqxmd.com/read/27776370/complications-related-to-implant-fixation-of-patellar-fractures-comparison-of-ring-pins-versus-bent-k-wires
#15
Min Gyu Kyung, Seung Hoo Lee, Min Bom Kim
Patellar fractures are characterized by injuries to the extensor and typically require surgical fixation. Among the methods used for fixation, the most common is the modified AO tension-band wiring technique. However, using this technique, implant migration occurs due to the lack of connections between the K-wires and the tension-band wire, which causes irritation and reduces fracture stability. Recently, new methods for tension-band wiring have been developed in which tension bands lock the K-wires through an attached "ring" to prevent migration...
October 24, 2016: Journal of Knee Surgery
https://www.readbyqxmd.com/read/27755336/apc-injuries-with-symphyseal-fixation-what-affects-outcome
#16
Kyle Lybrand, Anthony Bell, Deirdre Rodericks, David Templeman, Paul Tornetta
OBJECTIVE: To evaluate the influence of the symphyseal position at union, implant failure, and the type of posterior ring injury on validated outcome measures. DESIGN: Retrospective review with prospectively collected validated outcome data SETTING:: Two academic Level 1 trauma centersPatients/Participants: We evaluated 54 patients with operatively treated anterior-posterior compression (APC) type 2 and 3 injuries. INTERVENTION: Thirty-five APC type 2 and 19 APC type 3 injuries were reviewed at a minimum of 2 years after surgery...
October 7, 2016: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/27749563/the-biomechanical-advantages-of-bilateral-lumbo-iliac-fixation-in-unilateral-comminuted-sacral-fractures-without-sacroiliac-screw-safe-channel-a-finite-element-analysis
#17
Wenhao Song, Dongsheng Zhou, Yu He
BACKGROUND: The aim of this study was to compare the biomechanical characteristics between bilateral and unilateral lumbo-iliac fixation in unilateral comminuted sacral fractures (USF) by finite element analysis. METHODS: A 3-dimensional finite element model of unilateral sacral fractures was simulated. Three kinds of implants were instrumented into the model, including the unilateral lumbopelvic fixation (ULF), bilateral lumbopelvic fixation (BLF), and unilateral iliac fixation with bilateral lumbar pedicle screws (UBF)...
October 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27748355/treatment-of-unstable-posterior-pelvic-ring-fracture-with-pedicle-screw-rod-fixator-versus-locking-compression-plate-a-comparative-study
#18
Chun Bi, Qiugen Wang, Christopher Nagelli, Jianhong Wu, Qian Wang, Jiandong Wang
BACKGROUND The aim of this study was to assess the clinical results of treatment for unstable posterior pelvic fractures using a pedicle screw-rod fixator compared to use of a locking compression plate. MATERIAL AND METHODS A retrospective study was performed between June 2010 and May 2014 and the data were collected from 46 patients with unstable posterior pelvic ring fractures. All patients were treated using either a pedicle screw-rod fixator (study group, 24 patients) or locking compression plate (control group, 22 patients)...
October 17, 2016: Medical Science Monitor: International Medical Journal of Experimental and Clinical Research
https://www.readbyqxmd.com/read/27718011/gun-barrel-view-of-the-anterior-pelvic-ring-for-percutaneous-anterior-column-or-superior-pubic-ramus-screw-placement
#19
Nicholas Quercetti, Brandon Horne, Zac DiPaolo, Michael J Prayson
BACKGROUND: Traditionally, operative fixation of pelvic and acetabular injuries involves complex approaches and significant complications. Accelerated rehabilitation, decreased soft tissue stripping and decreased wound complications are several benefits driving a recent interest in percutaneous fixation. We describe a new fluoroscopic view to guide the placement of screws within the anterior pelvic ring. METHODS: Twenty retrograde anterior pelvic ring screws were percutaneously placed in ten cadaveric specimens...
October 7, 2016: European Journal of Orthopaedic Surgery & Traumatology: Orthopédie Traumatologie
https://www.readbyqxmd.com/read/27716018/less-invasive-lumbopelvic-fixation-technique-using-a-percutaneous-pedicle-screw-system-for-unstable-pelvic-ring-fracture-in-a-patient-with-severe-multiple-traumas
#20
Sei Yano, Yasuchika Aoki, Atsuya Watanabe, Takayuki Nakajima, Makoto Takazawa, Hiroyuki Hirasawa, Kazuhisa Takahashi, Koichi Nakagawa, Arata Nakajima, Hiroshi Takahashi, Sumihisa Orita, Yawara Eguchi, Takane Suzuki, Seiji Ohtori
Pelvic ring fractures are defined as life-threatening injuries that can be treated surgically with external or internal fixation. The authors report on an 81-year-old woman with an unstable pelvic fracture accompanying multiple traumas that was successfully treated with a less invasive procedure. The patient was injured in a traffic accident and sustained a total of 20 fractures, including pelvic ring, bilateral rib, and lumbar transverse processes fractures, and multiple fractures of both upper and lower extremities...
October 7, 2016: Journal of Neurosurgery. Spine
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