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https://www.readbyqxmd.com/read/28441624/various-soil-amendments-and-environmental-wastes-affect-the-im-mobilization-and-phytoavailability-of-potentially-toxic-elements-in-a-sewage-effluent-irrigated-sandy-soil
#1
Sabry M Shaheen, Mohamed S Shams, Mohamed R Khalifa, Mohamed A El-Dali, Jörg Rinklebe
Contamination of long-term sewage effluent irrigated soils by potentially toxic elements (PTEs) is a serious concern due to its high environmental and health risk. Our scientific hypothesis is that soil amendments can cause contradictory effects on the element mobilization and phytoavailability depending on the type of element and amendment. Therefore, we aimed to assess the impact of the application (1%) of several low cost amendments and environmental wastes on the (im)mobilization, availability, and uptake of Al, Cd, Cr, Cu, Fe, Mn, Ni, and Zn by sorghum (Sorghum bicolor) in a long term sewage effluent irrigated sandy soils collected from Egypt...
April 22, 2017: Ecotoxicology and Environmental Safety
https://www.readbyqxmd.com/read/28439705/cementless-oxford-medial-unicompartimental-knee-replacement-an-independent-series-with-a-5-year-follow-up
#2
Benjamin Panzram, Ines Bertlich, Tobias Reiner, Tilman Walker, Sébastien Hagmann, Tobias Gotterbarm
PURPOSE: Cemented unicompartmental knee replacement (UKR) has proven excellent long-term survival rates and functional scores in Price et al. (Clin Orthop Relat Res 435:171-180, 2005), Price and Svard (Clin Orthop Relat Res 469(1):174-179, 2011) and Murray et al. (Bone Joint Surg Br 80(6):983-989, 1998). The main causes for revision, aseptic loosening and pain of unknown origin might be addressed by cementless UKR in Liddle et al. (Bone Joint J 95-B(2):181-187, 2013), Pandit et al. (J Bone Joint Surg Am 95(15):1365-1372, 2013), National Joint Registry for England, Wales and Northern Ireland: 10th Annual Report 2013 ( http://www...
April 24, 2017: Archives of Orthopaedic and Trauma Surgery
https://www.readbyqxmd.com/read/28437545/union-knee-alignment-and-clinical-outcomes-of-patients-treated-with-autologous-bone-grafting-for-medial-tibial-defects-in-primary-total-knee-arthroplasty
#3
Kunihiro Hosaka, Shu Saito, Teruyasu Oyama, Hirohisa Fujimaki, Eiji Cho, Kanki Ishigaki, Yasuaki Tokuhashi
Autologous bone grafting is an established method to overcome bone deficiencies in primary total knee arthroplasty (TKA). However, recently, metal augments have been used by many surgeons. Although autologous bone grafting is a common technique, few large studies have described its success in achieving bone union in primary TKA. The goal of this study was to evaluate primary TKA with autologous bone grafting for tibial defects. A total of 68 knees that had undergone arthroplasty with autologous bone grafting with more than 1 year of follow-up were evaluated...
April 24, 2017: Orthopedics
https://www.readbyqxmd.com/read/28437366/the-impact-of-residual-subgingival-cement-on-biological-complications-around-dental-implants-a-systematic-review
#4
Alessandro Quaranta, Zhuo Wei Lim, Joyce Tang, Vittoria Perrotti, Jonathan Leichter
OBJECTIVES: To perform a systematic review on the impact of residual subgingival cement on peri-implant diseases and crestal bone loss. MATERIAL AND METHODS: MEDLINE, SCOPUS, ISI Web of Knowledge and Cochrane Central Register of Controlled Trials (CENTRAL) databases were used to identify articles published without time limits. RESULTS: A total of 6 articles were selected for a total of 389 patients (687 implants). The studies were heterogeneous and had a moderate-to-high risk of bias, but met the inclusion criteria...
April 21, 2017: Implant Dentistry
https://www.readbyqxmd.com/read/28436374/factors-influencing-treatment-of-proximal-femoral-fractures
#5
Sławomir Dudko, Paweł Kosior, Damian Kusz, Anna Wagner, Marcin Kusz, Karolina Godyń
BACKGROUND: Orthopaedics and traumatology departments are dominated by patients with proximal femoral fractures, who represent 20-30% of all patients treated there. The aim of this study was identification and evaluation of factors influencing treatment of proximal femoral fractures. MATERIAL AND METHODS: Between 2008 and 2015, we treated 424 femoral neck fractures and 442 trochanteric fractures in patients over 40 y/o. The impact of fracture location (femoral neck/trochanteric), character (non-displaced/displaced) and the patient's general condition (metrical/biological age, health condition) on qualification and treatment used (fixations/hip pro-sthesis/non-operative) was analyzed...
January 26, 2017: Ortopedia, Traumatologia, Rehabilitacja
https://www.readbyqxmd.com/read/28435571/outcome-of-skeletal-reconstructive-surgery-for-metastatic-bone-tumours-in-the-femur
#6
N H Mohamed-Haflah, Y Kassim, I Zuchri, W Zulmi
INTRODUCTION: The role of surgery in skeletal metastasis is to reduce morbidity and improve the quality of life in terminally ill patients. We report our experience with patients who underwent skeletal reconstructive surgery for metastatic bone tumour of the femur. MATERIALS AND METHODS: Twenty nine operations for skeletal metastasis of the femur performed in our centre between 2009 and 2015 were included in this study. We evaluated the choice of implant, complications, survival rate and functional outcome...
March 2017: Malaysian Orthopaedic Journal
https://www.readbyqxmd.com/read/28435567/role-of-antibiotic-cement-coated-nailing-in-infected-nonunion-of-tibia
#7
C Bhatia, A K Tiwari, S B Sharma, S Thalanki, A Rai
INTRODUCTION: Infected nonunion of long bones is a chronic and debilitating disorder. It is more difficult to deal with when the implant used for internal fixation itself becomes a potential media for infection because of bacterial adhesion and biofilm formation. Traditionally, it is managed by two-stage procedure for controlling the infection first and then treating the nonunion. This study has been undertaken to explore antibiotic cement coated nailing as single stage treatment modality for treating infection and achieving stability at the same time...
March 2017: Malaysian Orthopaedic Journal
https://www.readbyqxmd.com/read/28429954/-sternal-resection-for-metachronous-metastasis-from-renal-carcinoma
#8
T Jínek, J Klein, L Adamčík, M Duda, C Vojtek, R Andělová, R Soumarová, M Škrovina
In this report, the authors describe a rare case of complete sternal resection for a metachronous metastasis from renal carcinoma in a 59-year-old female patient 12 years after primary left nephrectomy. Due to the large extent of resection, a polyester double layer mesh with bone cement was used for chest wall reconstruction. The postoperative course was uneventful without any indication for adjuvant treatment. The patient has been followed up for 20 months without any signs of complications and recurrence of her malignancy...
2017: Rozhledy V Chirurgii: Měsíčník Československé Chirurgické Společnosti
https://www.readbyqxmd.com/read/28429363/two-unilateral-puncturation-comparative-analyses-of-multiple-level-fresh-osteoporotic-vertebral-body-compression-fractures-treated-with-percutaneous-vertebroplasty-guided-by-c-arm-fluoroscopy-or-in-senile-patients
#9
J-C Xu, G-H Wu, L-L Zhou, X-J Yang, J-T Liu
OBJECTIVE:  To compare the curative effects of two unilateral puncturation percutaneous vertebroplasty (PVP) for the pain caused by multiple-level osteoporotic vertebral body compression fractures (OVCF) in senile patients. PATIENTS AND METHODS: From June 2008 to November 2014, eighty-nine cases suffering from fresh multiple-level OVCF were randomly divided into experimental group (n=51) and control group (n=38). Patients underwent PVP guided by C-arm fluoroscopy in the prone position...
April 2017: European Review for Medical and Pharmacological Sciences
https://www.readbyqxmd.com/read/28427489/effects-of-structural-changes-in-subchondral-bone-on-articular-cartilage-in-a-beagle-dog-model
#10
Dong Yan, Tong Xi Liu, Bao Yue Liu, Ling Wang, Zhan Hua Qian, Xiao Guang Cheng, Kun Cheng Li
OBJECTIVE: Using MR T2-mapping and histopathologic score for articular cartilage to evaluate the effect of structural changes in subchondral bone on articular cartilage. METHODS: Twenty-four male Beagle dogs were randomly divided into a subchondral bone defect group (n = 12) and a bone cement group (n = 12). Models of subchondral bone defectin the medial tibial plateau and subchondral bone filled with bone cement were constructed. In all dogs, the left knee joint was used as the experimental sideand the right knee as the sham side...
March 2017: Biomedical and Environmental Sciences: BES
https://www.readbyqxmd.com/read/28427315/computational-modeling-of-long-term-effects-of-prophylactic-vertebroplasty-on-bone-adaptation
#11
Sandro D Badilatti, Patrik Christen, Stephen J Ferguson, Ralph Müller
Cement augmentation in vertebrae (vertebroplasty) is usually used to restore mechanical strength after spinal fracture but could also be used as a prophylactic treatment. So far, the mechanical competence has been determined immediately post-treatment, without considering long-term effects of bone adaptation. In this work, we investigated such long-term effects of vertebroplasty on the stiffness of the augmented bone by means of computational simulation of bone adaptation. Using micro-finite element analysis, we determined sites of increased mechanical stress (stress raisers) and stress shielding and, based on the simulations, regions with increased or decreased bone loss due to augmentation...
May 2017: Proceedings of the Institution of Mechanical Engineers. Part H, Journal of Engineering in Medicine
https://www.readbyqxmd.com/read/28421835/symptomatic-tension-pneumocephalus-following-palacos%C3%A2-cranioplasty-in-a-shunted-patient
#12
Tim Killeen, Mathias Fortunati, Esha Myanger, Daniel Rüfenacht, Nurzhan Ryskeldiyev, Serik Akshulakov, Evaldas Cesnulis
Tension pneumocephalus is an exceedingly rare complication of cerebrospinal fluid diversion occurring after surgery, trauma or spontaneous fistula formation. We report a case in a patient with a ventriculoperitoneal shunt who developed symptomatic tension pneumocephalus via a skin defect within 24 hours of undergoing bone cement cranioplasty.
April 19, 2017: British Journal of Neurosurgery
https://www.readbyqxmd.com/read/28416837/-clinical-comparison-of-polymethylmethacrylate-and-bone-cement-in-the-treatment-of-osteoporotic-vertebral-compression-fractures-a-retrospective-study
#13
L P Shang, Y Tian, X G Liu
OBJECTIVE: To analyze the outcomes of patients with osteoporotic vertebral compression fractures treated with polymethylmethacrylate (PMMA) and GeneX bone cement in percutaneous kyphoplasty and to provide guidance in selecting the vertebral filling material for this procedure. METHODS: In this study, 86 patients with osteoporotic vertebral compression fractures treated at Peking University Third Hospital between June 2012 and June 2013 were retrospectively analyzed...
April 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28416835/-polymethylmethacrylate-augmentation-of-bone-cement-injectable-cannulated-pedicle-screws-was-used-to-treat-degenerative-lumbar-scoliosis-with-osteoporosis
#14
H L Sun, C D Li, X W Li, X D Yi, H Liu, H L Lu, H Li, Z R Yu, Y Wang
OBJECTIVE: To describe the application of polymethylmethacrylate (PMMA) augmentation of cement-injectable cannulated pedicle screws for the treatment of degenerative lumbar scoliosis with osteoporosis. METHODS: Retrospective cohort study was used to compare cement injectable cannulated pedicle screws (CICPs) group with PMMA augmentation and control group with traditional method in the correction surgery for Lenke-silva level III and level IV degenerative scoliosis cases with osteoporosis...
April 18, 2017: Beijing da Xue Xue Bao. Yi Xue Ban, Journal of Peking University. Health Sciences
https://www.readbyqxmd.com/read/28415545/engineering-bone-regeneration-with-novel-cell-laden-hydrogel-microfiber-injectable-calcium-phosphate-scaffold
#15
Yang Song, Chi Zhang, Ping Wang, Lin Wang, Chunyun Bao, Michael D Weir, Mark A Reynolds, Ke Ren, Liang Zhao, Hockin H K Xu
Cell-based tissue engineering is promising to create living functional tissues for bone regeneration. The implanted cells should be evenly distributed in the scaffold, be fast-released to the defect and maintain high viability in order to actively participate in the regenerative process. Herein, we report an injectable calcium phosphate cement (CPC) scaffold containing cell-encapsulating hydrogel microfibers with desirable degradability that could deliver cells in a timely manner and maintain cell viability...
June 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28415511/facile-synthesis-and-characterization-of-novel-rapid-setting-spherical-sub-micron-bioactive-glasses-cements-and-their-biocompatibility-in-vitro
#16
Yuli Li, Qiming Liang, Cai Lin, Xian Li, Xiaofeng Chen, Qing Hu
Dental pulp vitality is extremely important for the tooth viability, since it provides nutrition and forms the dentin. Bioactive glasses (BGs) may be promising materials for pulp repair due to their excellent abilities of rapidly bonding to bone and stimulating new bone growth. However, the unsatisfied handling property, low plasticity, and poor rapid-setting property of traditional BGs limit its application in vital pulp therapy. Spherical bioactive glasses (SBGs) exhibited higher osteogenesis and odontogenic differentiation than irregular BGs...
June 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28415507/influences-of-doping-mesoporous-magnesium-silicate-on-water-absorption-drug-release-degradability-apatite-mineralization-and-primary-cells-responses-to-calcium-sulfate-based-bone-cements
#17
Zhengrong Gu, Sicheng Wang, Weizong Weng, Xiao Chen, Liehu Cao, Jie Wei, Jung-Woog Shin, Jiacan Su
In this study, composite cements containing mesoporous magnesium silicate (m-MS) and calcium sulfate (CS) were fabricated. The results revealed that the setting time of the m-MS/CS composite cements (m-MSC) slightly prolonged with the increase of m-MS content while the compressive strength suffered a little loss. The doping of m-MS improved the water absorption, drug release (vancomycin) and degradability of the m-MSC in Tris-HCl solution (pH=7.4). In addition, addition of m-MS facilitated the apatite-mineralization of m-MSC in simulated body fluid (SBF), indicating good bioactivity...
June 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28415505/a-new-method-to-produce-macroporous-mg-phosphate-bone-growth-substitutes
#18
Elham Babaie, Boren Lin, Sarit B Bhaduri
This paper is a sequel to our previous effort in developing Mg-phosphate orthopedic cements using amorphous Mg-phosphate (AMP) as the precursor. In this paper, we report a new real-time in situ technique to create macroporous bone growth substitute (BGS). The method uses biodegradable Mg-particles as the porogen. As opposed to the conventional wisdom of providing corrosion protection layers to biodegradable Mg-alloys, the present method uses the fast corrosion kinetics of Mg to create macropores in real time during the setting of the cement...
June 1, 2017: Materials Science & Engineering. C, Materials for Biological Applications
https://www.readbyqxmd.com/read/28413772/postoperative-complications-with-cryotherapy-in-bone-tumors
#19
REVIEW
Clark Chen, John Garlich, Katie Vincent, Earl Brien
The technique of cryosurgery has been used to control local recurrence in a variety of benign and malignant bone tumors. Early studies revealed significant complication rates (25%) that included fracture, infection, and soft tissue injury. Our method of cryosurgery has yielded excellent tumor control with improved complication rates. The objective of this study is to determine the characteristics of postoperative complications after pouring liquid nitrogen into curettaged bone defects, and to review our current indications and surgical technique in bone tumor management...
June 2017: Journal of Bone Oncology
https://www.readbyqxmd.com/read/28413541/clival-giant-cell-tumor-a-rare-case-report-and-review-of-literature-with-respect-to-current-line-of-management
#20
Mohana Rao Patibandla, Amit Kumar Thotakura, Marabathina Nageswara Rao, Gokul Chowdary Addagada, Manisha Chowdary Nukavarapu, Manas Kumar Panigrahi, Shantiveer Uppin, Sundaram Challa, Srinivas Dandamudi
Giant-cell tumor (GCT) involving the skull base is rare. Sphenoid bone is the most commonly involved bone followed by petrous temporal bone. Histopathology and radiological features of these lesions are similar to GCT involving bone elsewhere. Unlike other sites, skull base is not an ideal site for the radical surgery. Hence adjuvant treatment has pivotal role. Radiation therapy with intensity-modulated radiation therapy, stereotactic radiosurgery or chemotherapy with adriamycin are promising as described in some case reports...
January 2017: Asian Journal of Neurosurgery
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