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3D printing fracture

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https://www.readbyqxmd.com/read/28801685/investigation-on-ti6al4v-v-cr-fe-ss316-multi-layers-metallic-structure-fabricated-by-laser-3d-printing
#1
Wei Li, Frank Liou, Joseph Newkirk, Karen M Brown Taminger, William J Seufzer
Joining titanium alloy and stainless steel is becoming an urgent need since their outstanding mechanical properties can be utilized integratedly. However, direct fusion joining of Ti6Al4V to SS316 can cause brittle Ti-Fe intermetallics which compromise join bonds' mechanical properties. In this research, Laser 3D Printing was applied to explore a new Ti6Al4V to SS316 multi-metallic structure. A novel filler transition route was introduced (Ti6Al4V → V → Cr → Fe → SS316) to avoid the Ti-Fe intermetallics...
August 11, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28790331/3d-printed-personalized-titanium-plates-improve-clinical-outcome-in-microwave-ablation-of-bone-tumors-around-the-knee
#2
Limin Ma, Ye Zhou, Ye Zhu, Zefeng Lin, Lingling Chen, Yu Zhang, Hong Xia, Chuanbin Mao
Microwave ablation has been widely accepted in treating bone tumor. However, its procedure is time-consuming and usually results in postoperative fractures. To solve this problem, we designed and fabricated titanium plates customized to the patients' bone structures. The personalized titanium plates were then used for fixation after the removal of tumorous tissue. Specifically, 3D models of tumor-bearing bone segments were constructed by using computed tomography (CT) and magnetic resonance imaging (MRI). The 3D models were used to design the personalized titanium plates...
August 8, 2017: Scientific Reports
https://www.readbyqxmd.com/read/28772694/development-and-application-of-wood-flour-filled-polylactic-acid-composite-filament-for-3d-printing
#3
Yubo Tao, Honglei Wang, Zelong Li, Peng Li, Sheldon Q Shi
This paper presents the development of wood flour (WF)-filled polylactic acid (PLA) composite filaments for a fused deposition modeling (FDM) process with the aim of application to 3D printing. The composite filament consists of wood flour (5 wt %) in a PLA matrix. The detailed formulation and characterization of the composite filament were investigated experimentally, including tensile properties, microstructure, thermogravimetric analysis (TGA), differential scanning calorimetry (DSC) and X-ray diffraction (XRD)...
March 24, 2017: Materials
https://www.readbyqxmd.com/read/28772649/investigation-of-quasi-static-indentation-response-of-inkjet-printed-sandwich-structures-under-various-indenter-geometries
#4
Vishwesh Dikshit, Arun Prasanth Nagalingam, Yee Ling Yap, Swee Leong Sing, Wai Yee Yeong, Jun Wei
The objective of this investigation was to determine the quasi-static indentation response and failure mode in three-dimensional (3D) printed trapezoidal core structures, and to characterize the energy absorbed by the structures. In this work, the trapezoidal sandwich structure was designed in the following two ways. Firstly, the trapezoidal core along with its facesheet was 3D printed as a single element comprising a single material for both core and facesheet (type A); Secondly, the trapezoidal core along with facesheet was 3D printed, but with variation in facesheet materials (type B)...
March 14, 2017: Materials
https://www.readbyqxmd.com/read/28772395/customized-a-ti6al4v-bone-plate-for-complex-pelvic-fracture-by-selective-laser-melting
#5
Di Wang, Yimeng Wang, Shibiao Wu, Hui Lin, Yongqiang Yang, Shicai Fan, Cheng Gu, Jianhua Wang, Changhui Song
In pelvic fracture operations, bone plate shaping is challenging and the operation time is long. To address this issue, a customized bone plate was designed and produced using selective laser melting (SLM) technology. The key steps of this study included designing the customized bone plate, metal 3D printing, vacuum heat treatment, surface post-processing, operation rehearsal, and clinical application and evaluation. The joint surface of the bone plate was placed upwards with respect to the build platform to keep it away from the support and to improve the quality of the joint surface...
January 4, 2017: Materials
https://www.readbyqxmd.com/read/28722489/treatment-of-die-punch-fractures-with-3d-printing-technology
#6
Chunhui Chen, Leyi Cai, Chuanxu Zhang, Jianshun Wang, Xiaoshan Guo, Yifei Zhou
PURPOSE: We evaluated the feasibility, accuracy and effectiveness of applying three-dimensional (3D) printing technology for preoperative planning for die-punch fractures. METHODS: A total of 107 patients who underwent die-punch fracture surgery were enrolled in the study. They were randomly divided into two groups: 52 cases in the 3D model group and 55 cases in the routine group. A 3D digital model of each die-punch fracture was reconstructed in the 3D group. The 3D digital model was imported to a 3D printer to build the full solid model...
July 19, 2017: Journal of Investigative Surgery: the Official Journal of the Academy of Surgical Research
https://www.readbyqxmd.com/read/28719987/corrective-osteotomy-of-malunited-diaphyseal-fractures-of-the-forearm-simplified-using-3-dimensional-ct-data-proposal-of-our-simple-strategy-through-case-presentation
#7
Yoshitaka Hamada, Hiroyuki Gotani, Kousuke Sasaki, Yoshitaka Tanaka, Hiroshi Egawa, Thepparat Kanchanathepsak
BACKGROUND: Reconstruction of malunited diaphyseal fractures of the forearm is one of the most difficult treatments due to its complicated structure. Widespread usage of Digital Imaging and Communications in Medicine (DICOM) data of 3-dimensional (3D) computed tomography (CT) and 3D printing can make estimating the true plane of the deformity easy. METHODS: A 21-year-old man with limited supination due to left forearm nonunion deformity initially treated by locking plate fixation was referred to our hospital...
March 1, 2017: Hand: Official Journal of the American Association for Hand Surgery
https://www.readbyqxmd.com/read/28719986/three-dimensional-printing-of-surgical-clips-an-in-vitro-pilot-study-and-trial-of-efficacy
#8
Noah E Canvasser, Shuvro De, Ersin Koseoglu, Aaron H Lay, Igor Sorokin, Raul Fernandez, Jeffrey A Cadeddu
Introduction and Objective Three-dimensional printing applications have increased over the past decade. Our objective was to test rapid prototyping of a 3D printed surgical clip for intraoperative use. Methods Our prototype was modeled after the 10mm Weck® Hem-o-lok® polymer clip (Teleflex Inc., Wayne, PA, USA). A 3D computer-aided design model of the Hem-o-lok® clip was reverse-engineered using commercial microscopy and printing was done using an Objet Connex500 multi-jetting system (Stratasys, Eden Prairie, MN, USA)...
July 18, 2017: Journal of Endourology
https://www.readbyqxmd.com/read/28688157/the-application-of-3-dimensional-printing-for-preoperative-planning-in-oral-and-maxillofacial-surgery-in-dogs-and-cats
#9
Jenna N Winer, Frank J M Verstraete, Derek D Cissell, Steven Lucero, Kyriacos A Athanasiou, Boaz Arzi
OBJECTIVE: To describe the application of 3-dimensional (3D) printing in advanced oral and maxillofacial surgery (OMFS) and to discuss the benefits of this modality in surgical planning, student and resident training, and client education. STUDY DESIGN: Retrospective case series. ANIMALS: Client-owned dogs (n = 28) and cats (n = 4) with 3D printing models of the skulls. METHODS: The medical records of 32 cases with 3D printing prior to major OMFS were reviewed...
July 8, 2017: Veterinary Surgery: VS
https://www.readbyqxmd.com/read/28682875/the-use-of-3d-printed-titanium-mesh-tray-in-treating-complex-comminuted-mandibular-fractures-a-case-report
#10
Junli Ma, Limin Ma, Zhifa Wang, Xiongjie Zhu, Weijian Wang
RATIONALE: Precise bony reduction and reconstruction of optimal contour in treating comminuted mandibular fractures is very difficult using traditional techniques and devices. The aim of this report is to introduce our experiences in using virtual surgery and three-dimensional (3D) printing technique in treating this clinical challenge. PATIENT CONCERNS: A 26-year-old man presented with severe trauma in the maxillofacial area due to fall from height. DIAGNOSIS: Computed tomography images revealed middle face fractures and comminuted mandibular fracture including bilateral condyles...
July 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/28642189/how-to-produce-pre-shaped-rigid-arch-bars-using-low-cost-3d-printing-technology%C3%A2-%C3%A2-a-technical-note
#11
C Druelle, S Touzet-Roumazeille, G Raoul, J Ferri, R Nicot
Numerous oral and maxillofacial procedures in dentate patients begin with the fixation of occlusions. While several techniques exist to perform mandibulo-maxillary fixation, many surgeons use arch bars in common practice. In cases of severe craniofacial traumas or jaw malformations, such as temporomandibular joint ankylosis, it may be impossible to use rigid arch bars. This technical note reports on the development of a technique to produce pre-shaped rigid arch bars using 3D printing technology. We take the case of a patient who presents Le Fort 1, Le Fort 2 and Le Fort 3 fractures as well as a central palatine disjunction, an angular mandibular fracture and bilateral zygomatic fractures...
June 19, 2017: Journal of Stomatology, Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/28630927/welding-of-3d-printed-carbon-nanotube-polymer-composites-by-locally-induced-microwave-heating
#12
Charles B Sweeney, Blake A Lackey, Martin J Pospisil, Thomas C Achee, Victoria K Hicks, Aaron G Moran, Blake R Teipel, Mohammad A Saed, Micah J Green
Additive manufacturing through material extrusion, often termed three-dimensional (3D) printing, is a burgeoning method for manufacturing thermoplastic components. However, a key obstacle facing 3D-printed plastic parts in engineering applications is the weak weld between successive filament traces, which often leads to delamination and mechanical failure. This is the chief obstacle to the use of thermoplastic additive manufacturing. We report a novel concept for welding 3D-printed thermoplastic interfaces using intense localized heating of carbon nanotubes (CNTs) by microwave irradiation...
June 2017: Science Advances
https://www.readbyqxmd.com/read/28586732/the-virtual-approach-to-the-assessment-of-skeletal-injuries-in-human-skeletal-remains-of-forensic-importance
#13
Petra Urbanová, Ann H Ross, Mikoláš Jurda, Ivana Šplíchalová
While assessing skeletal injuries in human skeletal remains, forensic anthropologists are frequently presented with fractured, fragmented, or otherwise modified skeletal remains. The examination of evidence and the mechanisms of skeletal injuries often require that separate osseous elements be permanently or temporarily reassembled or reconstructed. If not dealt with properly, such reconstructions may impede accurate interpretation of the evidence. Nowadays, routine forensic examinations increasingly incorporate digital imaging technologies...
July 2017: Journal of Forensic and Legal Medicine
https://www.readbyqxmd.com/read/28578109/reconstruction-of-thoracic-spine-using-a-personalized-3d-printed-vertebral-body-in-adolescent-with-t9-primary-bone-tumor
#14
Wen Jie Choy, Ralph J Mobbs, Ben Wilcox, Steven Phan, Kevin Phan, Chester E Sutterlin
BACKGROUND: Neurosurgery and spine surgery have the potential to benefit from the use of 3-dimensional printing (3DP) technology due to complex anatomic considerations and the delicate nature of surrounding structures. We report a procedure that uses a 3D-printed titanium T9 vertebral body implant post T9 vertebrectomy for a primary bone tumor. CASE DESCRIPTION: A 14-year-old female presented with progressive kyphoscoliosis and a pathologic fracture of the T9 vertebra with sagittal and coronal deformity due to a destructive primary bone tumor...
May 31, 2017: World Neurosurgery
https://www.readbyqxmd.com/read/28547894/internal-fixation-of-complicated-acetabular-fractures-directed-by-preoperative-surgery-with-3d-printing-models
#15
Zhao-Jie Liu, Jian Jia, Yin-Guang Zhang, Wei Tian, Xin Jin, Yong-Cheng Hu
The purpose of this article is to evaluate the efficacy and feasibility of preoperative surgery with 3D printing-assisted internal fixation of complicated acetabular fractures. A retrospective case review was performed for the above surgical procedure. A 23-year-old man was confirmed by radiological examination to have fractures of multiple ribs, with hemopneumothorax and communicated fractures of the left acetabulum. According to the Letounel and Judet classification, T-shaped fracture involving posterior wall was diagnosed...
May 2017: Orthopaedic Surgery
https://www.readbyqxmd.com/read/28512850/in-situ-handheld-3d-bioprinting-for-cartilage-regeneration
#16
Claudia Di Bella, Serena Duchi, Cathal D O'Connell, Romane Blanchard, Cheryl Augustine, Zhilian Yue, Fletcher Thompson, Christopher Richards, Stephen Beirne, Carmine Onofrillo, Sebastien H Bauquier, Stewart D Ryan, Peter Pivonka, Gordon G Wallace, Peter F Choong
Articular cartilage injuries experienced at an early age can lead to the development of osteoarthritis later in life. In situ 3D printing is an exciting and innovative bio-fabrication technology that enables the surgeon to deliver tissue- engineering techniques at the time and location of need. We have created a hand- held 3D printing device (Biopen) that allows the simultaneous co-axial extrusion of bioscaffold and cultured cells directly into the cartilage defect in vivo in a single session surgery. This pilot study assesses the ability of the Biopen to repair a full thickness chondral defect and the early outcomes in cartilage regeneration, and compares these results to other treatments in a large animal model...
May 17, 2017: Journal of Tissue Engineering and Regenerative Medicine
https://www.readbyqxmd.com/read/28507143/controllable-load-sharing-for-soft-adhesive-interfaces-on-three-dimensional-surfaces
#17
Sukho Song, Dirk-Michael Drotlef, Carmel Majidi, Metin Sitti
For adhering to three-dimensional (3D) surfaces or objects, current adhesion systems are limited by a fundamental trade-off between 3D surface conformability and high adhesion strength. This limitation arises from the need for a soft, mechanically compliant interface, which enables conformability to nonflat and irregularly shaped surfaces but significantly reduces the interfacial fracture strength. In this work, we overcome this trade-off with an adhesion-based soft-gripping system that exhibits enhanced fracture strength without sacrificing conformability to nonplanar 3D surfaces...
May 30, 2017: Proceedings of the National Academy of Sciences of the United States of America
https://www.readbyqxmd.com/read/28501000/combination-of-a-biodegradable-three-dimensional-3d-printed-cage-for-mechanical-support-and-nanofibrous-membranes-for-sustainable-release-of-antimicrobial-agents-for-treating-the-femoral-metaphyseal-comminuted-fracture
#18
Ying-Chao Chou, Demei Lee, Tzu-Min Chang, Yung-Heng Hsu, Yi-Hsun Yu, Err-Cheng Chan, Shih-Jung Liu
The aim of this study was to develop a biodegradable three-dimensional-printed polylactide (PLA) cage for promoting bony fixation and an antibiotics-embedded poly(d,l)-lactide-co-glycolide (PLGA) nanofibrous membrane for infectious prophylaxis during treating the comminuted metaphyseal fracture in a rabbit femoral model. The in vitro studies included measuring the mechanical properties of the 3D printed cage and determining release activities of vancomycin and ceftazidime from the nanofibers. The in vivo study included comparisons of rabbits of the femoral metaphyseal comminuted fracture treated with or without the combined biodegradable polymers...
May 2, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/28493805/creating-three-dimensional-printed-models-of-acetabular-fractures-for-use-as-educational-tools
#19
Matthew S Manganaro, Yoav Morag, William J Weadock, Corrie M Yablon, Kara Gaetke-Udager, Erica B Stein
Acetabular fractures are frequently encountered in some clinical practices, and the precise classification of these fractures greatly influences treatments and outcomes. The authors identified the need for an educational aid when teaching acetabular fracture classifications, given the complex spatial anatomy and the nonintuitive classification system that is commonly used. Three-dimensional ( 3D three-dimensional ) printing is an evolving technique that has applications as an educational aid, providing the student with a tangible object to interact with and learn from...
May 2017: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/28465202/design-and-evaluation-of-a-new-synthetic-wrist-procedural-simulator-wristsim-%C3%A2-for-training-of-distal-radius-fracture-fixation-by-volar-plating
#20
P Lazarus, E Pire, C Sapa, L Ruffenach, M Saur, P Liverneaux, J J Hidalgo Diaz
Legislation concerning workload of surgical trainees and pressure to reduce learning curves have forced us reconsider surgical training. Our goal was to evaluate a synthetic procedural simulator for teaching open reduction and internal fixation (ORIF) of distal radius fractures (DRF). Twenty surgeons used a synthetic procedural simulator (Wristsim(®)) made by 3D printing for ORIF of DRF with a volar plate (Newclip Technics(®)). The evaluation consisted of grading the simulator's realism compared to the surgeons' own experience with surgery on cadavers...
April 11, 2017: Hand Surgery and Rehabilitation
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