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https://www.readbyqxmd.com/read/28732316/a-user-friendly-technical-set-up-for-infrared-photography-of-forensic-findings
#1
Thomas Rost, Nicole Kalberer, Eva Scheurer
Infrared photography is interesting for a use in forensic science and forensic medicine since it reveals findings that normally are almost invisible to the human eye. Originally, infrared photography has been made possible by the placement of an infrared light transmission filter screwed in front of the camera objective lens. However, this set-up is associated with many drawbacks such as the loss of the autofocus function, the need of an external infrared source, and long exposure times which make the use of a tripod necessary...
July 10, 2017: Forensic Science International
https://www.readbyqxmd.com/read/28732217/finite-element-evaluation-of-stable-fixation-in-combined-mandibular-fractures
#2
Thalita Regina Vieira E Oliveira, Daniel Takanori Kemmoku, Jorge Vicente Lopes da Silva, Pedro Yoshito Noritomi, Luis Augusto Passeri
PURPOSE: The fixation of combined mandibular fractures, especially symphyseal-condylar fractures, although occurring commonly and having a higher complication rate in the clinic, is rarely investigated regarding predictable therapeutic approaches. Thus this study's aim was to assess different forms of condylar fixation when combined with symphyseal fracture fixation. MATERIALS AND METHODS: Using finite element models, we analyzed the stress distribution that occurs when a condylar fracture is fixed with 1 miniplate, 2 miniplates, or a trapezoidal condylar miniplate and when a symphyseal fracture is fixed with 2 parallel plates, 2 perpendicular plates, or 2 lag screws...
June 24, 2017: Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28731967/reply-re-response-to-the-analysis-of-patient-outcomes-in-two-screw-versus-single-screw-cephalomedullary-nail
#3
Josephine Berger-Groch, Martin Rupprecht, Michael Hoffmann
No abstract text is available yet for this article.
August 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28731966/re-response-to-the-analysis-of-patient-outcomes-in-two-screw-versus-single-screw-cephalomedullary-nail
#4
Matthew K J Jaggard, Ian Sinha, Angus Lewis, Rajarshi Bhattacharya
No abstract text is available yet for this article.
August 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28731965/functional-outcomes-post-lisfranc-injury-transarticular-screws-dorsal-bridge-plating-or-combination-treatment
#5
Simon Lau, Catherine Guest, Marcus Hall, Mark Tacey, Samuel Joseph, Andrew Oppy
OBJECTIVE: To identify whether transarticular screws, dorsal bridging plates or a combination of the 2 result in the best functional outcome after Lisfranc injury. DESIGN: Case series. SETTING: Level one trauma center. PATIENTS: Fifty patients who underwent surgical fixation of Lisfranc injuries over a 6-year period were retrospectively reviewed. INTERVENTION: One of 3 treatment arms: transarticular screw fixation alone, dorsal bridge plating alone or a combination of dorsal bridge and transarticular screw fixation...
August 2017: Journal of Orthopaedic Trauma
https://www.readbyqxmd.com/read/28731332/tuning-the-cavity-size-and-chirality-of-self-assembling-3d-dna-crystals
#6
Chad R Simmons, Fei Zhang, Tara MacCulloch, Nour Eddine Fahmi, Nicholas Stephanopoulos, Yan Liu, Nadrian C Seeman, Hao Yan
The foundational goal of structural DNA nanotechnology-the field that uses oligonucleotides as a molecular building block for the programmable self-assembly of nanostructured systems-was to use DNA to construct three-dimensional (3D) lattices for solving macromolecular structures. The programmable nature of DNA makes it an ideal system for rationally constructing self-assembled crystals, and immobilizing guest molecules in a repeating 3D array through their specific stereospatial interactions with the scaffold...
July 21, 2017: Journal of the American Chemical Society
https://www.readbyqxmd.com/read/28730395/dynamic-hip-screw-and-fibular-strut-graft-for-fixation-of-fresh-femoral-neck-fracture-with-posterior-comminution
#7
Adham Elgeidi, Abed El Negery, M Serry Abdellatif, Nabil El Moghazy
INTRODUCTION: Posterior comminution of the femoral neck fracture is a major cause of delayed and non-union owing to the loss of the buttressing effect against the posterior rotation. When a femoral neck fracture with posterior comminution is anatomically reduced, only the anterior portions of the femoral neck fracture surfaces are brought into contact leaving a posterior defect. The purpose of this study was to evaluate the use of fibular strut grafting and dynamic hip screw (DHS) for fresh femoral neck fractures with posterior comminution in young patient less than 50 years...
July 20, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28730248/clavicle-anatomical-osteosynthesis-plate-breakage-failure-analysis-report-based-on-patient-morphological-parameters
#8
Rodica Marinescu, Vasile Iulian Antoniac, Dan Ioan Stoia, Dan Constantin Lăptoiu
Clavicle fracture reported incidence is about 5% of fractures in adult; among them, those located in the middle third of the shaft represent more than 80% from the total of cases. Due to the special morphological and biomechanical constraints of the clavicle, several methods for restoring morphological integrity in these fractures are described, including conservative, non-surgical treatment. The last 10 years of clinical studies in the field have favored the surgical treatment for selected cases; several osteosynthesis implants are in use - mostly anatomical plates with specific advantages and documented complications...
2017: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/28730234/associated-lesions-of-peri-implant-mucosa-in-immediate-versus-delayed-loading-of-dental-implants
#9
Alexandru Andrei Iliescu, Sabina Andrada Zurac, Vasile Nicolae, Mihaela Georgiana Iliescu, Paula Perlea
Currently, immediate loading of dental implants is very attractive as a standard protocol for prosthetic restorations in edentulous patients. The aim of this study is to find out the intimate peri-implant mucosa response depending on timing of implant loading, immediate or delayed. Fifty-one screw implants Alpha Bio (Alpha-Bio Tec, Israel) were inserted in 42 partially edentulous patients according to standardized surgical techniques. At six months of loading, samples of peri-implant mucosa were harvested from 27 immediate loaded, respectively 24 delayed loaded implants, and subjected to microscopic examination...
2017: Romanian Journal of Morphology and Embryology, Revue Roumaine de Morphologie et Embryologie
https://www.readbyqxmd.com/read/28728587/minimally-invasive-unilateral-pedicle-screws-and-a-translaminar-facet-screw-fixation-and-interbody-fusion-for-treatment-of-single-segment-lower-lumbar-vertebral-disease-surgical-technique-and-preliminary-clinical-results
#10
Peng Huang, Yiguo Wang, Jiao Xu, Bo Xiao, Jianheng Liu, Luyang Che, Keya Mao
BACKGROUND: Conventional open transforaminal lumbar interbody fusion (TLIF) using unilateral pedicle screws and a translaminar facet screw has been performed for many years with good results. The outcomes of minimally invasive TLIF (MIS TLIF) are similar to the good outcomes of open TLIF, with the additional benefits of reducing iatrogenic injury, shortening hospital stays, and reducing the recovery duration. Instead of using small cuts on both sides, we performed MIS TLIF through a single cut using unilateral pedicle screws and a translaminar facet screw...
July 20, 2017: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/28728432/postoperative-recurrence-of-instability-due-to-new-anterior-glenoid-rim-fractures-after-arthroscopic-bankart-repair
#11
Shigeto Nakagawa, Takehito Hirose, Yuta Tachibana, Ryo Iuchi, Tatsuo Mae
BACKGROUND: Computed tomography (CT) sometimes reveals a new fracture of the anterior glenoid rim in patients with postoperative recurrence of instability after arthroscopic Bankart repair using suture anchors, but there have been few previous reports about such fractures. HYPOTHESIS: The placement of a large number of suture anchors during arthroscopic Bankart repair might be associated with a new glenoid rim fracture. STUDY DESIGN: Cohort study; Level of evidence, 3...
July 1, 2017: American Journal of Sports Medicine
https://www.readbyqxmd.com/read/28728206/-subaxial-cervical-spine-injuries-treatment-recommendations-of-the-german-orthopedic-and-trauma-society
#12
Philipp Schleicher, Matti Scholz, Frank Kandziora, Andreas Badke, Florian Hans Brakopp, Helmut Klaus Friedrich Ekkerlein, Erol Gercek, Rene Hartensuer, Philipp Hartung, Jan-Sven Gilbert Jarvers, Philipp Kobbe, Stefan Matschke, Robert Morrison, Christian W Müller, Miguel Pishnamaz, Maximilian Reinhold, Klaus John Schnake, Gregor Schmeiser, Gregor Stein, Bernhard Ullrich, Thomas Weiß, Volker Zimmermann
In a consensus process during four sessions in 2016, the working group "lower cervical spine" of the German Society for Orthopedic and Trauma Surgery (DGOU), formulated "Therapeutic Recommendations for the Lower Cervical Spine", taking into consideration the current literature. Therapeutic goals are a permanently stable, painless cervical spine and the protection against secondary neurologic damage while retaining the greatest possible amount of motion and spinal profile. Due to its ease of use and its proven good reliability, the AOSpine classification for subaxial cervical injuries should be used...
July 20, 2017: Zeitschrift Für Orthopädie und Unfallchirurgie
https://www.readbyqxmd.com/read/28728103/freiberg-s-infraction-a-modified-closing-wedge-osteotomy-for-an-undiagnosed-case
#13
Carlo Biz, Alessandro Zornetta, Ilaria Fantoni, Alberto Crimì, Enrico Bordignon, P Ruggieri
INTRODUCTION: Freiberg's infraction is an osteonecrosis affecting the metatarsal head whose pathogenesis is not fully understood, although stress overloading by multiple microtraumas remains the most widely accepted cause. Operative treatment, by different techniques, is necessary when conservative treatment fails. PRESENTATION OF CASE: A 31-year old woman presented with left foot severe pain, especially at the level of the metatarsophalangeal joint (MTPJ) of the second ray, underestimated upon initial evaluation...
July 10, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28728101/a-rising-transpedicular-access-to-anterior-vertebral-body-a-case-report
#14
Emanuele Ciurlia, Gianfilippo Caggiari, Mario Spina, Matteo Andreozzi, Leonardo Puddu, Carlo Doria
INTRODUCTION: The transpedicular access is a common and effective procedure used to reach anterior vertebral body without passing through critical structures. after a transpedicular instrumentation, it is difficult to reach the anterior vertebral body because screws are placed in the way. We assume that an innovative transdiscal route could be used in patients with previous instrumentation, in order to perform a vertebroplasty or biopsy. PRESENTATION OF CASE: We report the case of a 65-years-old woman who came to our Department complaining low back pain...
July 10, 2017: International Journal of Surgery Case Reports
https://www.readbyqxmd.com/read/28727778/in-vitro-study-of-accuracy-of-subaxial-cervical-pedicle-screw-insertion-using-calipers-based-on-the-gravity-line
#15
Xiang Yao, Shiqing Liu
OBJECT: There is a high probability of iatrogenic perforation of the vertebral pedicle wall during the application of subaxial cervical pedicle screw (CPS). The goal of this study was to evaluate the accuracy of CPS insertion at C3-C7 in vitro using novel calipers based on the gravity line. METHODS: Nine cadaveric cervical spines underwent computed tomography scanning and preoperative design. A lateral fluoroscopic view was taken to measure the intra-operative sagittal angle by C-arm with hanging cross structured K-wires...
2017: PloS One
https://www.readbyqxmd.com/read/28727470/all-on-4%C3%A2-treatment-concept-in-a-severely-resorbed-jaw-using-narrow-platform-implants-a-case-report
#16
Naif Sinada
Although many approaches to the restoration of edentulous maxillae and mandibles have been developed, these treatments can be costly and time-consuming, and involve extensive grafting of the edentulous ridges. The All-on-4® treatment concept has been shown to be a viable alternative, with limited grafting required, using at least four regular-platform implants to support an acrylic, screw-retained provisional prosthesis before the fabrication of a definitive prosthesis. This case presentation will discuss the use of narrow-platform (3...
July 2017: Compendium of Continuing Education in Dentistry
https://www.readbyqxmd.com/read/28727463/angled-implant-design-to-accommodate-screw-retained-implant-supported-prostheses
#17
Dale Howes
Anatomical constraints at implant sites often precipitate a conflict between surgical and prosthodontic prerequisites for screw retention of implantsupported prostheses. This article discusses use of a dual-axis implant designed to help clinicians overcome these challenges by facilitating accuracy of surgical placement and prosthetic simplicity, as well as improving biomechanics and enhancing esthetics.
July 2017: Compendium of Continuing Education in Dentistry
https://www.readbyqxmd.com/read/28727219/fractal-crystals-hunting-the-hidden-dimension-in-nanoporous-materials
#18
Lei Wang, Shengcai Zhu, Meikun Shen, Haiwen Tian, Songhai Xie, Hongbin Zhang, Yahong Zhang, Yi Tang
Screw dislocation structure in crystal are origin of symmetry breaking in a wide range of dense phase crystals. Preparation of such analogous structure in framework phase crystals is of great importance in zeolites but still a challenge. On the basis of crystal structure-solving and model building, we found that the two specific intergrowths in MTW zeolite produce this complex fractal and spiral structure. With the structure determined parameters (spiral pitch h, screw angle θ and spatial angle ψ) of Burgers circuit, the screw dislocation structure can be constructed by two different dimensional intergrowth sections...
July 20, 2017: Angewandte Chemie
https://www.readbyqxmd.com/read/28726191/virtual-experimental-validation-of-dynamic-osteosynthesis-in-the-treatment-of-fractures-of-the-proximal-femur
#19
V E Dubrov, I A Kuz'kin, I M Shcherbakov, A L Matveev, A V Yudin
Volume model of transtrochanteric fracture of the femoral bone fixed by Targon PF dynamic fixator was studied by the finite element analysis. The following parameters were measured: magnitude and direction of displacement of system elements, pressure between fragments, and von Mises stress distribution in the fixator depending on support screw plunging into the sleeve. The results indicate that stability of the bone-nail system increases during fracture union and 10-mm shortening of the femoral neck axis, which is seen from a decrease in system deformation under load by 16...
July 18, 2017: Bulletin of Experimental Biology and Medicine
https://www.readbyqxmd.com/read/28726010/robot-guidance-for-percutaneous-minimally-invasive-placement-of-pedicle-screws-for-pyogenic-spondylodiscitis-is-associated-with-lower-rates-of-wound-breakdown-compared-to-conventional-fluoroscopy-guided-instrumentation
#20
Awad Alaid, Kajetan von Eckardstein, Nicolas Roydon Smoll, Volodymyr Solomiichuk, Veit Rohde, Ramon Martinez, Bawarjan Schatlo
Postoperative wound healing can pose a problem in patients undergoing instrumented surgery for pyogenic spondylodiscitis. Robotic guidance allows the minimally invasive placement of pedicle screws in the thoracolumbar spine. We assessed whether using this technique to perform minimally invasive surgery had an impact on wound healing in patients with pyogenic spondylodiscitis when compared to conventional open fluoroscopy-guided surgery. We reviewed charts of 206 consecutive patients who underwent instrumentation for pyogenic spondylodiscitis...
July 20, 2017: Neurosurgical Review
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