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https://www.readbyqxmd.com/read/28809629/-talar-neck-fractures-treated-using-percutaneous-screw-fixation
#1
R Veselý, M Kelbl, J Kacián, V Hulka, J Kočiš, R Kunovský
PURPOSE OF THE STUDY Closed reduction and percutaneous fixation of nondisplaced talar neck fractures have been applied by some authors. The aim of this paper is to assess the results and complications of this minimally invasive technique. MATERIAL AND METHODS In the period from 2009 to 2014, twenty-one patients with a talar neck fracture were observed after closed reduction and percutaneous screw fixation in the Traumatological Hospital in Brno. The mean age of the patients was 38 years (range 18-56 years)...
2017: Acta Chirurgiae Orthopaedicae et Traumatologiae Cechoslovaca
https://www.readbyqxmd.com/read/28773240/metallic-biomaterials-current-challenges-and-opportunities
#2
REVIEW
Karthika Prasad, Olha Bazaka, Ming Chua, Madison Rochford, Liam Fedrick, Jordan Spoor, Richard Symes, Marcus Tieppo, Cameron Collins, Alex Cao, David Markwell, Kostya Ken Ostrikov, Kateryna Bazaka
Metallic biomaterials are engineered systems designed to provide internal support to biological tissues and they are being used largely in joint replacements, dental implants, orthopaedic fixations and stents. Higher biomaterial usage is associated with an increased incidence of implant-related complications due to poor implant integration, inflammation, mechanical instability, necrosis and infections, and associated prolonged patient care, pain and loss of function. In this review, we will briefly explore major representatives of metallic biomaterials along with the key existing and emerging strategies for surface and bulk modification used to improve biointegration, mechanical strength and flexibility of biometals, and discuss their compatibility with the concept of 3D printing...
July 31, 2017: Materials
https://www.readbyqxmd.com/read/28660731/zygomaticomaxillary-suture-maturation-part-ii-the-influence-of-sutural-maturation-on-the-response-to-maxillary-protraction
#3
F Angelieri, A C Ruellas, M S Yatabe, L H S Cevidanes, L Franchi, C Toyama-Hino, H J De Clerck, T Nguyen, J A McNamara
OBJECTIVE: To evaluate the influence of the maturational stages of zygomaticomaxillary sutures (ZMS) on the response to maxillary protraction. SUBJECTS AND METHODS: A total of 40 Class III patients were treated retrospectively with either a combination of rapid maxillary expansion and facial mask (RME/FM) or bone-anchored maxillary protraction (BAMP). The RME/FM group consisted of 18 patients (mean age 8.3 years), while the BAMP group was comprised of 22 patients (mean age 11...
June 29, 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28657561/total-knee-replacement-intraoperative-and-postoperative-kinematic-assessment
#4
M Bontempi, U Cardinale, L Bragonzoni, L Macchiarola, A Grassi, C Signorelli, G M Marcheggiani Muccioli, Stefano Zaffagnini
BACKGROUND AND AIM: The main goals of the total knee arthroplasty (TKA) is to reduce the perceived pain and  restore knee mobility and function in case of osteoarthritic knees joints. Literature shows how the three major causes of TKA failures are related to wear, loosening and instability and this is due to a problem of imbalance and malalignment. Intraoperative and postoperative kinematics analysis could be of benefit for improving surgery outcome. The aim of the present paper is to give an overview of the two set-up with the highest accuracy for intraoperative and postoperative TKA kinematics evaluation, currently in use at Istituto Ortopedico Rizzoli...
June 7, 2017: Acta Bio-medica: Atenei Parmensis
https://www.readbyqxmd.com/read/28631418/the-effects-of-biodentine-polycaprolactone-3d-scaffold-with-odontogenesis-properties-on-human-dental-pulp-cells
#5
C-C Ho, H-Y Fang, B Wang, T-H Huang, M-Y Shie
AIM: To determine the feasibility of using three-dimensional printed Biodentine/polycaprolactone composite scaffolds for orthopaedic and dental applications. The physicochemical properties and the odontogenic differentiation of human dental pulp cells (hDPCs) were investigated. METHODOLOGY: Biodentine was well-suspended in ethanol and dropped slowly into molten polycaprolactone with vigorous stirring. The Biodentine/polycaprolactone composite scaffolds were then fabricated into controlled macropore sizes and structures using an extrusion-based three-dimensional (3D) printer...
June 20, 2017: International Endodontic Journal
https://www.readbyqxmd.com/read/28592074/-effects-of-iassist-navigation-system-and-personal-specific-instrument-assisted-total-knee-arthroplasty-in-the-treatment-of-osteoarthritis
#6
RANDOMIZED CONTROLLED TRIAL
S C Tian, Q Q Yao, X D Yin, S Liu, J Zhou, J Hu, J Y Li, R Shan, H B Jiang, L M Wang
Objective: To compare the application of iASSIST assisted total knee arthroplasty (TKA) and three-dimentional(3D) printing personal specific instrument (PSI) assist TKA in the treatment of osteoarthritis (OA). Methods: Clinical data of 47 patients with OA admitted at Department of Orthopaedic Surgery in Nanjing Medical University Nanjing Hospital between April and September 2016 were retrospectively reviewed, including 20 males and 27 females, aging from 57 to 77 years with mean age of (63.8±8.2) years. They were randomly divided into iASSIST-TKA group (23 patients) and PSI-TKA group (24 patients)...
June 1, 2017: Zhonghua Wai Ke za Zhi [Chinese Journal of Surgery]
https://www.readbyqxmd.com/read/28529664/patient-specific-3d-models-aid-planning-for-triplane-proximal-femoral-osteotomy-in-slipped-capital-femoral-epiphysis
#7
L Cherkasskiy, J P Caffrey, A F Szewczyk, E Cory, J D Bomar, C L Farnsworth, M Jeffords, D R Wenger, R L Sah, V V Upasani
PURPOSE: Slipped capital femoral epiphysis (SCFE) can result in a complex three-dimensional (3D) deformity of the proximal femur. A three-plane proximal femoral osteotomy (TPFO) has been described to improve hip mechanics. The purpose of this study was to evaluate the benefits of using 3D print technology to aid in surgical planning. PATIENTS AND METHODS: Fifteen children treated with TPFO for symptomatic proximal femoral deformity due to SCFE were included in this study...
April 2017: Journal of Children's Orthopaedics
https://www.readbyqxmd.com/read/28497536/robotic-guided-waterjet-cutting-technique-for-high-tibial-dome-osteotomy-a-pilot-study
#8
Eduardo M Suero, Ralph Westphal, David Zaremba, Musa Citak, Nael Hawi, Mustafa Citak, Timo Stuebig, Christian Krettek, Emmanouil Liodakis
BACKGROUND: Oscillating saws generate high levels of heat (up to 150°C), which can lead to tissue necrosis, delayed healing and infection. Abrasive waterjet-cutting techniques have been described as a new tool to perform bone cuts, with less heat generation. METHODS: Four lower-limbs of four human alcohol conserved cadavers were tested. Navigation references were attached to the tibia and an intraoperative fluoroscopy-based 3D scan was obtained. A 1.2 mm diameter nozzle was attached to a robotic arm, which was guided to follow a pre-specified path...
May 12, 2017: International Journal of Medical Robotics + Computer Assisted Surgery: MRCAS
https://www.readbyqxmd.com/read/28482501/metallic-powder-bed-based-3d-printing-of-cellular-scaffolds-for-orthopaedic-implants-a-state-of-the-art-review-on-manufacturing-topological-design-mechanical-properties-and-biocompatibility
#9
REVIEW
X P Tan, Y J Tan, C S L Chow, S B Tor, W Y Yeong
Metallic cellular scaffold is one of the best choices for orthopaedic implants as a replacement of human body parts, which could improve life quality and increase longevity for the people needed. Unlike conventional methods of making cellular scaffolds, three-dimensional (3D) printing or additive manufacturing opens up new possibilities to fabricate those customisable intricate designs with highly interconnected pores. In the past decade, metallic powder-bed based 3D printing methods emerged and the techniques are becoming increasingly mature recently, where selective laser melting (SLM) and selective electron beam melting (SEBM) are the two representatives...
July 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28475021/individualized-3d-printed-model-assisted-posterior-screw-fixation-for-the-treatment-of-craniovertebral-junction-abnormality-a-retrospective-study
#10
Fangyou Gao, Qu Wang, Chuangxi Liu, Bing Xiong, Tao Luo
OBJECTIVE This study was undertaken to evaluate the feasibility and efficacy of individualized 3D printed model-assisted posterior internal fixation in treating craniovertebral junction (CVJ) abnormalities. METHODS Forty-four patients (19 males and 25 females; mean age 36.5 ± 9.2 years, range 11-62 years; symptom duration 1 month-15 years) with a CVJ abnormality who were admitted to the authors' institution between April 2010 and April 2015 were retrospectively studied. The individualized 3D printed model of the CVJ was produced based on the individual CT data by use of 3D printing technology...
July 2017: Journal of Neurosurgery. Spine
https://www.readbyqxmd.com/read/28474269/intra-operative-fiducial-based-ct-fluoroscope-image-registration-framework-for-image-guided-robot-assisted-joint-fracture-surgery
#11
Giulio Dagnino, Ioannis Georgilas, Samir Morad, Peter Gibbons, Payam Tarassoli, Roger Atkins, Sanja Dogramadzi
PURPOSE: Joint fractures must be accurately reduced minimising soft tissue damages to avoid negative surgical outcomes. To this regard, we have developed the RAFS surgical system, which allows the percutaneous reduction of intra-articular fractures and provides intra-operative real-time 3D image guidance to the surgeon. Earlier experiments showed the effectiveness of the RAFS system on phantoms, but also key issues which precluded its use in a clinical application. This work proposes a redesign of the RAFS's navigation system overcoming the earlier version's issues, aiming to move the RAFS system into a surgical environment...
August 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/28433450/a-retrospective-cohort-study-of-concomitant-ipsilateral-extra-capsular-and-intra-capsular-fractures-of-the-proximal-femur-are-they-casual-findings-or-an-undervalued-reality
#12
Miquel Videla-Cés, José-Miguel Sales-Pérez, Joan Girós-Torres, Rubén Sánchez-Navés, Sebastián Videla
BACKGROUND: Fractures of the proximal femur constitute a major public health problem, with an annual incidence in Spain of 7.6 cases per 1000 inhabitants over 65 years of age. Hip fractures are frequent in elderly patients, related to osteoporosis and with low energy trauma, which means that they can be considered a geriatric syndrome. Simultaneous ipsilateral extra- and intra-articular hip fractures are considered as very rare are, and generally speaking, classified as extra- or intra-capsular fractures...
April 13, 2017: Injury
https://www.readbyqxmd.com/read/28414870/three-dimensional-skeletal-mandibular-changes-associated-with-herbst-appliance-treatment
#13
B Q Souki, P L C Vilefort, D D Oliveira, I Andrade, A C Ruellas, M S Yatabe, T Nguyen, L Franchi, J A McNamara, L H S Cevidanes
OBJECTIVES: Three-dimensional evaluation of skeletal mandibular changes following Herbst appliance treatment. SETTING AND SAMPLE POPULATION: Retrospective case-control study, based on a sample size calculation. Twenty-five pubertal patients treated with Herbst appliance (HAG), and 25 matched Class II patients who received other non-orthopaedic dental treatments (CG). MATERIAL AND METHODS: Three-dimensional models were generated from pre-treatment (T0) and post-treatment (T1) cone beam computed tomograms...
May 2017: Orthodontics & Craniofacial Research
https://www.readbyqxmd.com/read/28371800/three-dimensional-evaluation-of-the-maxillary-arch-and-palate-in-unilateral-cleft-lip-and-palate-subjects-using-digital-dental-casts
#14
Chiara Generali, Jasmina Primozic, Stephen Richmond, Maria Bizzarro, Carlos Flores-Mir, Maja Ovsenik, Letizia Perillo
Objectives: To assess arch width, palatal surface area, and volume in surgically treated unilateral cleft lip and palate (UCLP) in mixed dentition children in comparison with non-cleft lip and palate (NCLP) children using a 3D laser scanning. Materials and Methods: 38 subjects (Caucasian origin), 5.63-11.9 years of age (mean, 9.33 ± 1.67 years), were included. 19 in each group (UCLP and NCLP). Digital dental casts were obtained using a 3 Shape R700 laser scanner...
March 25, 2017: European Journal of Orthodontics
https://www.readbyqxmd.com/read/28328995/effectiveness-of-interceptive-treatment-of-class-iii-malocclusions-with-skeletal-anchorage-a-systematic-review-and-meta-analysis
#15
Jorge Rodríguez de Guzmán-Barrera, Carla Sáez Martínez, Montserrat Boronat-Catalá, Jose María Montiel-Company, Vanessa Paredes-Gallardo, José Luís Gandía-Franco, José Manuel Almerich-Silla, Carlos Bellot-Arcís
Recently, new strategies for treating class III malocclusions have appeared. Skeletal anchorage appears to reduce the dentoalveolar effects while maximising the orthopaedic effect in growing patients. The purpose of this systematic review and meta-analysis is to examine the effectiveness of bone anchorage devices for interceptive treatment of skeletal class III malocclusions. Searches were made in the Pubmed, Embase, Scopus and Cochrane databases, as well as in a grey literature database, and were complemented by hand-searching...
2017: PloS One
https://www.readbyqxmd.com/read/28220752/putting-3d-modelling-and-3d-printing-into-practice-virtual-surgery-and-preoperative-planning-to-reconstruct-complex-post-traumatic-skeletal-deformities-and-defects
#16
Kevin Tetsworth, Steve Block, Vaida Glatt
3D printing technology has revolutionized and gradually transformed manufacturing across a broad spectrum of industries, including healthcare. Nowhere is this more apparent than in orthopaedics with many surgeons already incorporating aspects of 3D modelling and virtual procedures into their routine clinical practice. As a more extreme application, patient-specific 3D printed titanium truss cages represent a novel approach for managing the challenge of segmental bone defects. This review illustrates the potential indications of this innovative technique using 3D printed titanium truss cages in conjunction with the Masquelet technique...
2017: SICOT-J
https://www.readbyqxmd.com/read/28207829/three-dimensional-acetabular-orientation-measurement-in-a-reliable-coordinate-system-among-one-hundred-chinese
#17
Henghui Zhang, Yiping Wang, Songtao Ai, Xiaojun Chen, Liao Wang, Kerong Dai
Determining three-dimensional (3D) acetabular orientation is important for several orthopaedic scenarios, but the complex geometries of both pelvis and acetabulum make measurements of orientation unreliable. Acetabular orientation may also differ between the sexes or racial groups. We aimed to (1) establish and evaluate a novel method for measuring 3D acetabular orientation, (2) apply this new method to a large population of Chinese subjects, and (3) report relevant characteristics of native acetabular orientation in this population...
2017: PloS One
https://www.readbyqxmd.com/read/28188485/feasibility-of-laser-guided-percutaneous-pedicle-screw-placement-in-the-lumbar-spine-using-a-hybrid-or
#18
P H Richter, F Gebhard, M Salameh, K Schuetze, M Kraus
PURPOSE: Innovations in intraoperative imaging lead to major changes in orthopaedic surgery. In our setting, a 3D flat-panel c-arm (Artis zeego) is mounted on a robotic arm offering an integrated aiming tool (Syngo iGuide). Our aim was to investigate the feasibility of Syngo iGuide for pedicle screw placement in comparison with fluoroscopic screw implantation. METHODS: In 10 lumbar models, 100 screws were implanted. In 5 models, a standard fluoroscopic technique was used...
February 10, 2017: International Journal of Computer Assisted Radiology and Surgery
https://www.readbyqxmd.com/read/28154823/ute-t2-%C3%A2-analysis-of-diseased-and-healthy-achilles-tendons-and-correlation-with-clinical-score-an-in-vivo-preliminary-study
#19
COMPARATIVE STUDY
Yang Qiao, Hong-Yue Tao, Kui Ma, Zi-Ying Wu, Jian-Xun Qu, Shuang Chen
Objective. To compare T2(⁎) value of healthy and diseased Achilles tendons (AT) with a recently introduced three-dimensional ultrashort echo time (3D-UTE) sequence and analyze the correlation between T2(⁎) value and clinical scores. Methods. Ten patients with symptomatic Achilles tendon and ten healthy volunteers were investigated with 3D-UTE sequence on a 3T magnetic resonance (MR) scanner. T2(⁎) values of four regions in Achilles tendons were calculated. The clinical outcomes of patients were evaluated according to the American Orthopaedic Foot and Ankle Society (AOFAS) score and Achilles Tendon Rupture Score (ATRS)...
2017: BioMed Research International
https://www.readbyqxmd.com/read/28114949/individual-headless-compression-screws-fixed-with-three-dimensional-image-processing-technology-improves-fusion-rates-of-isolated-talonavicular-arthrodesis
#20
Mei-Ming Xie, Kang Xia, Hong-Xin Zhang, Hong-Hui Cao, Zhi-Jin Yang, Hai-Feng Cui, Shang Gao, Kang-Lai Tang
BACKGROUND: Screw fixation is a typical technique for isolated talonavicular arthrodesis (TNA), however, no consensus has been reached on how to select most suitable inserted position and direction. The study aimed to present a new fixation technique and to evaluate the clinical outcome of individual headless compression screws (HCSs) applied with three-dimensional (3D) image processing technology to isolated TNA. METHODS: From 2007 to 2014, 69 patients underwent isolated TNA by using double Acutrak HCSs...
January 23, 2017: Journal of Orthopaedic Surgery and Research
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