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https://www.readbyqxmd.com/read/29310362/wrapping-grafting-for-congenital-pseudarthrosis-of-the-tibia-a-preliminary-report
#1
An Yan, Hai-Bo Mei, Kun Liu, Jiang-Yan Wu, Jin Tang, Guang-Hui Zhu, Wei-Hua Ye
OBJECTIVE: Treatment of congenital pseudarthrosis of the tibia (CPT) remains a challenge. The autogenic iliac bone graft is important consistent of treatment for CPT. The purpose of this study was to investigate the role of wrapping autogenic iliac bone graft in improvement of the curing opportunities of CPT. METHODS: We combined Ilizarov fixator with intramedullary rodding of the tibia and wrapping autogenic iliac bone graft for treatment 51 cases of CPT between 2007 and 2010...
December 2017: Medicine (Baltimore)
https://www.readbyqxmd.com/read/29306082/effect-of-freezing-conditions-on-%C3%AE-tricalcium-phosphate-camphene-scaffold-with-micro-sized-particles-fabricated-by-freeze-casting
#2
Gurdev Singh, S Soundarapandian
The long standing need of the implant manufacturing industries is to fabricate multi-matrix, customized porous scaffold as cost-effectively. In recent years, freeze casting has shown greater opportunity in the fabrication of porous scaffolds (tricalcium phosphate, hydroxyapatite, bioglass, alumina, etc.) such as at ease and good control over pore size, porosity, a range of materials and economic feasibility. In particular, tricalcium phosphate (TCP) has proved as it possesses good biocompatible (osteoinduction, osteoconduction, etc...
December 30, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29306080/hybrid-micro-nanostructural-surface-offering-improved-stress-distribution-and-enhanced-osseointegration-properties-of-the-biomedical-titanium-implant
#3
Ping-Jen Hou, Keng-Liang Ou, Chin-Chieh Wang, Chiung-Fang Huang, Muhammad Ruslin, Erwan Sugiatno, Tzu-Sen Yang, Hsin-Hua Chou
OBJECTIVES: The aim of the present study was to investigate the surface characteristic, biomechanical behavior, hemocompatibility, bone tissue response and osseointegration of the optimal micro-arc oxidation surface-treated titanium (MST-Ti) dental implant. MATERIALS AND METHODS: The surface characteristic, biomechanical behavior and hemocompatibility of the MST-Ti dental implant were performed using scanning electron microscope, finite element method, blood dripping and immersion tests...
November 27, 2017: Journal of the Mechanical Behavior of Biomedical Materials
https://www.readbyqxmd.com/read/29297547/tlr2-signaling-pathway-in-alveolar-bone-osteogenesis-induced-by-aloe-vera-and-xenograft-xcb
#4
Utari Kresnoadi, Retno Pudji Rahayu, M Rubianto, Subijanto Marto Sudarmo, Hendrik Setia Budi
The aim of this study was to find the role of TLR2 signaling pathway in reducing osteoclast activity and promoting osteoblast growth by inducing a combination of Aloe vera and cancellous bovine xenograft (XCB) into dental extraction socket. Forty-eight Cavia cobayas were used. They were divided into eight groups (n=6). For control group, their mandibular incisors were extracted and filled with PEG. For treatment groups, they were extracted and filled with XCB, Aloe vera and the combination of Aloe vera and XCB...
May 2017: Brazilian Dental Journal
https://www.readbyqxmd.com/read/29290185/non-vascularized-autogenous-bone-grafts-for-reconstruction-of-maxillofacial-osseous-defects
#5
Waseem Ahmed, Muhammad Adil Asim, Afeefa Ehsan, Qalab Abbas
OBJECTIVE: To determine the outcomes of non-vascularized bone grafts for reconstruction of maxillofacial defects. STUDY DESIGN: Case series. PLACE AND DURATION OF STUDY: Department of Oral and Maxillofacial Surgery, Armed Forces Institute of Dentistry, Rawalpindi, from January 2013 to December 2015. METHODOLOGY: Descriptive analyses of 30 patients, who underwent maxillofacial reconstruction with non-vascularized bone grafts, were conducted...
January 2018: Journal of the College of Physicians and Surgeons—Pakistan: JCPSP
https://www.readbyqxmd.com/read/29281943/biological-and-mechanical-factors-promote-the-osteogenesis-of-rabbit-artificial-vertebral-laminae
#6
Linli Li, Xujun Chen, Yiqun He, Youhai Dong
Reconstruction of vertebral laminae without epidural scar formation has been challenging. The success of bone formation depends on the biological and mechanical conditions of the surrounding tissues. In this study, we aimed to investigate the roles of biological and mechanical factors in the osteogenesis of artificial laminae. Mesenchymal stem cells derived from rabbit umbilical cord Wharton's Jelly were induced for osteogenic differentiation for 3 weeks before seeding on the hydroxyapatite-collagen I scaffolds to construct the tissue-engineered laminae (TEL)...
December 27, 2017: Tissue Engineering. Part A
https://www.readbyqxmd.com/read/29281715/correlation-between-the-thickness-of-the-crestal-and-buccolingual-cortical-bone-at-varying-depths-and-implant-stability-quotients
#7
Kanthanat Chatvaratthana, Sita Thaworanunta, Dutmanee Seriwatanachai, Natthamet Wongsirichat
BACKGROUND/PURPOSE: Resonance frequency analysis (RFA) is clinically used in dentistry to access the stiffness of dental implants in surrounding bone. However, the clear advantages and disadvantages of this method are still inconclusive. The aim of this study was to investigate and compare implant stability quotient (ISQ) values obtained from RFA with parameters obtained from a cone beam computed tomography (CBCT) scan of the same region. MATERIALS AND METHODS: Nineteen implants (Conelog) were inserted in the posterior maxillary and mandibular partially edentulous regions of 16 patients...
2017: PloS One
https://www.readbyqxmd.com/read/29258960/corticocancellous-bone-graft-vs-cancellous-bone-graft-for-the-management-of-unstable-scaphoid-nonunion
#8
J K Kim, J O Yoon, H Baek
INTRODUCTION: This study was undertaken to determine whether corticocancellous bone grafting and cancellous bone grafting differ in terms of bone union rate, restoration of scaphoid anatomy, and wrist function when unstable scaphoid nonunions are concomitantly treated by screw fixation. MATERIALS AND METHODS: This is retrospective cohort study. In Group A (17 patients), unstable scaphoid nonunion was treated with corticocancellous graft harvested from the iliac crest and headless compression screw using volar approach...
December 16, 2017: Orthopaedics & Traumatology, Surgery & Research: OTSR
https://www.readbyqxmd.com/read/29246565/in-vitro-simulation-of-intraoperative-vertebroplasty-applied-for-pedicle-screw-augmentation-a-biomechanical-evaluation
#9
Krzysztof Zapałowicz, Agnieszka Kierzkowska, Lechosław F Ciupik
BACKGROUND AND PURPOSE: The purpose of this study was to evaluate the effect of an in vitro simulation of intraoperative vertebroplasty on embedded pedicle screws resistance to pullout. This method involved an application of acrylic cement into the vertebral bodies only after pedicle screws implementation. MATERIALS AND METHODS: For the purpose of conducting this research, the authors used the spines of fully-grown pigs. The procedure was as follows: firstly, the pedicle screws were bilaterally implemented in 10 vertebrae; secondly, cancellous bone was removed from vertebral bodies selected for screws augmentation and lastly it was replaced by polymethylmethacrylate (PMMA)...
December 8, 2017: Neurologia i Neurochirurgia Polska
https://www.readbyqxmd.com/read/29244254/effect-of-deconditioning-on-cortical-and-cancellous-bone-growth-in-the-exercise-trained-young-rats
#10
Jun Iwamoto, James K Yeh, John F Aloia
No abstract text is available yet for this article.
December 2017: Journal of Bone and Mineral Research: the Official Journal of the American Society for Bone and Mineral Research
https://www.readbyqxmd.com/read/29243166/a-hospital-and-home-based-exercise-program-to-address-functional-decline-in-people-following-allogeneic-stem-cell-transplantation
#11
S Abo, D Ritchie, L Denehy, Y Panek-Hudson, L Irving, C L Granger
PURPOSE: The aims of this study are to investigate the feasibility of an exercise program commencing 60 days following allogeneic stem cell transplantation (alloSCT), to investigate changes in physical function and health-related quality of life (HRQoL) in patients from pre- to post-alloSCT and to explore changes in patient outcomes before and after the program. METHODS: This study is a single site, prospective case series including 43 adults undergoing alloSCT...
December 14, 2017: Supportive Care in Cancer: Official Journal of the Multinational Association of Supportive Care in Cancer
https://www.readbyqxmd.com/read/29238859/-influence-of-thermodisinfection-on-impaction-of-cancellous-bone-an%C3%A2-in-vitro-model-of-femoral-impaction-bone-grafting
#12
REVIEW
C Fölsch, A Jahnke, A Groß, G Martels, G A Krombach, M Rickert, M Kampschulte
BACKGROUND: The reconstruction of bony defects during endoprosthesis revision surgery using "impaction bone grafting" leads to the possibility of a longstanding osseous integration to achieve good clinical results. Native allogeneic cancellous bone is often used for the procedure. This study examines the influence of thermodisinfection on the impaction behaviour of cancellous bone of different geometries and on the cement distribution. METHODS: The cancellous bone was obtained from the femoral heads of 7‑month old pigs...
December 13, 2017: Der Orthopäde
https://www.readbyqxmd.com/read/29236176/na18f-accumulates-on-the-compressive-side-of-peri-implant-bone-under-immediate-loading
#13
Miou Yamamoto, Toru Ogawa, Masayoshi Yokoyama, Yoshihito Funaki, Kenta Shobara, Aya Shibamoto, Juan Ramón Vanegas Sáenz, Keiichi Sasaki
This study aimed to examine the dynamic change in bone metabolism by immediate loading in several sites around implants using high-resolution Na18F-PET scan. Two titanium implants (Ø 1.2 mm) were inserted parallel to each other in the right tibiae of Wistar rats (n = 4). The left tibia was set as control side. One day after insertion, closed coil springs of 4.0 N were attached to the expose superior portions of the implants to apply a continuous mechanical stress. The rats with fluorine-18 (18F) ion (5 mCi/rat) intravenously injected were scanned by PET scanner at 4, 7, 14, 28 days after load application...
December 13, 2017: Odontology
https://www.readbyqxmd.com/read/29233582/influence-of-involuntary-cigarette-smoke-inhalation-on-osseointegration-a-systematic-review-and-meta-analysis-of-preclinical-studies
#14
REVIEW
F Javed, S V Kellesarian, T Abduljabbar, A T Abduljabbar, Z Akram, F Vohra, I Rahman, G E Romanos
There are no studies that have systematically reviewed the influence of involuntary cigarette smoke inhalation (ICSI) on the stability of implants. The aim of the present study was to perform a systematic review and meta-analysis of preclinical studies that assessed the influence of involuntary cigarette smoke inhalation ICSI on osseointegration. Indexed databases (PubMed, Google-Scholar, Scopus, EMBASE, and Web of Knowledge) were searched till September 2017. Titles and abstracts of studies identified using the above-described protocol were independently screened by 2 authors...
December 9, 2017: International Journal of Oral and Maxillofacial Surgery
https://www.readbyqxmd.com/read/29230039/gli1-identifies-osteogenic-progenitors-for-bone-formation-and-fracture-repair
#15
Yu Shi, Guangxu He, Wen-Chih Lee, Jennifer A McKenzie, Matthew J Silva, Fanxin Long
Bone formation in mammals requires continuous production of osteoblasts throughout life. A common molecular marker for all osteogenic mesenchymal progenitors has not been identified. Here, by lineage-tracing experiments in fetal or postnatal mice, we discover that Gli1+ cells progressively produce osteoblasts in all skeletal sites. Most notably, in postnatal growing mice, the Gli1+ cells residing immediately beneath the growth plate, termed here "metaphyseal mesenchymal progenitors" (MMPs), are essential for cancellous bone formation...
December 11, 2017: Nature Communications
https://www.readbyqxmd.com/read/29226584/wool-derived-keratin-hydrogel-enhances-implant-osseointegration-in-cancellous-bone
#16
Warwick J Duncan, Philippa F C Greer, Min-Ho Lee, Carolina Loch, Jennifer H A Gay
AIM: This study investigated whether a keratin hydrogel derived from wool enhances ossointegration of dental implants, using a cancellous bone model in sheep. METHOD: Ten female sheep received one dental implant per hind leg in the distal femoral condyles. Test implants were coated with 1 mL of keratin hydrogel containing sulphonated keratin and hydroxyapatite; control implants remained uncoated; implants were not functionally loaded axially. Biomechanical stability was tested with resonance frequency analysis (RFA) at placement and euthanasia...
December 11, 2017: Journal of Biomedical Materials Research. Part B, Applied Biomaterials
https://www.readbyqxmd.com/read/29216869/horizontal-ridge-reconstruction-of-the-anterior-maxilla-using-customized-allogeneic-bone-blocks-with-a-minimally-invasive-technique-a-case-series
#17
Laurent Venet, Michel Perriat, Francesco Guido Mangano, Thomas Fortin
BACKGROUND: Different surgical procedures have been proposed to achieve horizontal ridge reconstruction of the anterior maxilla; all these procedures, however, require bone replacement materials to be adapted to the bone defect at the time of implantation, resulting in complex and time-consuming procedures. The purpose of this study was to describe how to use a 3D printed hardcopy model of the maxilla to prepare customized milled bone blocks, to be adapted on the bone defect areas using a minimally invasive subperiosteal tunneling technique...
December 8, 2017: BMC Oral Health
https://www.readbyqxmd.com/read/29214714/micromotion-analysis-of-different-implant-configuration-bone-density-and-crestal-cortical-bone-thickness-in-immediately-loaded-mandibular-full-arch-implant-restorations-a-nonlinear-finite-element-study
#18
Tsutomu Sugiura, Kazuhiko Yamamoto, Satoshi Horita, Kazuhiro Murakami, Tadaaki Kirita
BACKGROUND: Excessive micromotion may cause failure of osseointegration between the implant and bone. PURPOSE: This study investigated the effects of implant configuration, bone density, and crestal cortical bone thickness on micromotion in immediately loaded mandibular full-arch implant restorations. MATERIALS AND METHODS: A finite element model of the edentulous mandible was constructed. Four implants were inserted in two different configurations, which were four parallel implants or tilted distal implants according to the all-on-four concept...
December 6, 2017: Clinical Implant Dentistry and related Research
https://www.readbyqxmd.com/read/29200140/evaluating-the-implementation-barriers-of-an-intranasal-fentanyl-pain-pathway-for-pediatric-long-bone-fractures
#19
Tamara Arnautovic, Kathryn Sommese, Paul C Mullan, Steven Barron Frazier, Turaj Vazifedan, Dana Erikson Ramirez
OBJECTIVES: This study aimed to assess physician comfort, knowledge, and implementation barriers regarding the use of intranasal fentanyl (INF) for pain management in patients with long-bone fractures in a pediatric emergency department (ED) with an INF pain pathway. METHODS: A retrospective chart review was conducted of patients, 3 to 21 years old, in our ED with an International Classification of Diseases-9th Revision code for a long-bone fracture from September 1, 2013, to August 31, 2015...
December 1, 2017: Pediatric Emergency Care
https://www.readbyqxmd.com/read/29199479/a-statistical-study-of-metatarsal-anatomy-toward-the-design-of-wide-range-prosthetic-solutions
#20
Yohann Couqueberg, Romain Augoyard, Marc Augoyard, Valérie Berry-Kromer, Céline Bouby, Loïc Girod
The aim of the study is to provide some characteristic parameters of the anatomy of metatarsals from computed tomography (CT) scans. These data are important for more anatomical metatarsal head resurfacing prosthesis conception. Measures were performed on 20 CT scans from 17 patients with a mean age of 44.35 ± 15.75 years old. The panel was composed of 40% male and 50% left feet. Measurements were divided in 2 distinct categories: linear measurements with length of metatarsal, head radius and head, and diaphysis and base thicknesses, and cross-sectional area measurements, including cortical and cancellous bone area at 10%, 25%, 50%, 60%, 75%, and 90% of the metatarsal's length...
December 1, 2017: Foot & Ankle Specialist
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