bluuebunny/crossref_metadata_2025_split huggingface dataset:
Effects of NSAIDs and hydroxyapatite coating on osseointegration
Authors: Salduz Ahmet , Dikici Fatih , Kılıçoğlu Önder Ismet , Balcı Halil Ibrahim , Akgul Turgut , Kürkçü Mehmet , Kurtoğlu Cem , Tözün Remzi 
Published: January 2017

Purpose: The aim of our study is to investigate the bone ongrowth of two different alternative surfaces and the effect of nonsteroidal anti-inflammatory drugs (NSAIDs) on osseointegration. Methods: Hips of 40 New Zealand white rabbits were operated bilaterally. Hydroxyapatite (HA)-coated titanium rods were implanted into the right femur, and grit-blasted titanium rods were implanted into the left femur. They were divided into three groups. At the end of 8 weeks, both femora of the rabbits were removed and investigated biomechanically and histologically. Results: HA-coated implants had a significantly better failure load and “percentage of bone–implant contact” than grit-blasted implants. There was no significant difference between the medication groups as a result of the biomechanical and histologic investigations. Conclusions: Our results indicate that NSAIDs did not have any negative effect on the osseointegration. HA-coated implants may provide more tensile strength and greater bone–implant contact rate in comparison with grit-blasted implants.
One stage hip arthroscopy and periacetabular osteotomy: surgical technique and initial results
Authors: Zanotti Gerardo , Comba Fernando , Genovesi Eduardo , Buttaro Martin , Piccaluga Francisco 
Published: January 2017

Aim: We purposed to describe the surgical technique and preliminary outcomes of combined arthroscopic and periacetabular osteotomy (PAO) for the treatment of non-arthritic hip dysplasia. Methods: Between May and August 2015, 4 patients (3 female, 1 male) with an average age of 29 years old (range; 22-33) had undergone one-stage hip arthroscopy and periacetabular osteotomy. Primary symptom was pain associated with instability. Upon radiographic examination, mean lateral center-edge angle of Wiberg was 12° (range; 7°-18°). Intra-articular findings were computed and primary outomes were as follows: radiographic angular correction; time to healing after pelvis osteotomy and functional results according to Merle D’Aubigné Score. Results: Minimum follow-up was 6 months whereas maximum was 9 months. Mean surgical time was 98 minutes for hip arthroscopy and 132 minutes for the osteotomy. In all cases, a lesion of the antero-superior labrum and the chondro-labral junction was found and repaired. After correction, overall postoperative center-edge angle was 29° (range; 25°-35°). Bone healing was certified in all cases at 6 months postoperatively. Overall Merle D’Aubigné Score was 17/18 points. Conclusion: Combined treatment of non-arthritic hip dysplasia with hip arthroscopy and PAO obtained good clinical and radiological outcomes. Former arthroscopy enables the diagnosis of cartilage lesions and intra-articular pathology as well as it aids in proceeding or not to an open correction.
Maquet Osteotomy, Results
Authors: Díaz Jorge Luis , Vega Marcelo , Matesevach Ivan 
Published: January 2017

Objectives: The objectives are to assess the results and to discuss the indications for Maquet osteotomy in patients with patellofemoral osteoarthritis. Methods: Retrospective study of a series of 32 patients (4 bilateral, that is to say, 36 knees) operated between March 1999 and October 2013 in " Arthroscopy Private Center ", 12 male and 20 female, average age 59 years with an average postoperative surgery outcomes of 53 months. The technique consists of an arthroscopic procedure to treat joint lesions and a tibial tuberosity osteotomy of 5 cm long, by embedding a 1cm subsequent graft taken from the same metaphysis and fixed with 2 screws. Results: All patients had significant improvement, evaluated with Kujala’s score (54 points preop to 86 points postop) and Guillamon Ferguson’s criteria (27.2 very good and 60.7 good). The complication rate was acceptable. Conclusion: The available technics are surgeries on proximal soft structures, osteotomies of tibial tuberosity and patellofemoral arthroplasty. Maquet osteotomy is an excellent procedure when the patient’s selection is right. Obtaining the graft from the same metaphysis simplified the procedure.
Return to Sports after Acute Simultaneous Reconstruction of Anterior Cruciate Ligament Injury and Grade III Medial Collateral Ligament Injury
Authors: Bertona Agustin , Zicaro Juan Pablo , Viescas Juan Manuel Gonzalez , Atala Nicolas , Yacuzzi Carlos , Costa-Paz Matias 
Published: January 2017

Objectives: Combined Anterior Cruciate Ligament (ACL) injury and Medial Collateral Ligament (MCL) injury account for 20% of knee ligament lesions. Conservative treatment of MCL and surgical ACL reconstruction are generally recommended. Significant medial instability after non-surgical management of MCL can lead to ACL reconstruction failure. The optimal management for athletes with combined ACL-MCL injuries remains controversial. The purpose of this study was to analyze the functional and clinical evolution of patients who underwent combined ACL-MCL surgery and their return-to-sport level with minimum 2-years follow-up. Methods: A total of 20 athletes with acute simultaneous ACL/Grade III MCL reconstructions were treated between March 2006 and January 2014. The minimum follow-up time was 24 months. Subjective functional results (IKDC, Lysholm), range of motion, anterior-medial and rotational stability (Lachmann, Pivot Shift, valgus stress) were evaluated. The ability to return to sport (Tegner) and the level achieved was recorded. Results: All patients significantly improved functional scores and stability tests. The mean subjective IKDC score improved from 37.7 ± 12.9 (range 21-69) preoperatively to 88.21 ± 4.47 (range 80-96) postoperatively (P <0.05). The average Lysholm score was 40.44 ± 10.58 (range 27-65) preoperatively and 90.83 ± 3.38 (range 84-95) postoperatively (P <0.05). Valgus and sagittal laxity was not observed (IKDC A 92% B 8%) at final follow-up. All patients had normal/nearly normal (IKDC A or B) mobility. All patients returned to sports; 90% reached the level they had prior to the ligamentous injury. Of all competitive athletes, 66% achieved the same level of sport. Conclusion: In athletes with acute ACL-Grade III MCL lesions, an early simultaneous reconstruction can significantly improve the medial and sagittal stability of the knee. This procedure resulted in excellent functional outcomes, with return to the same level of sports in the majority of patients at short-term follow-up.
ACL Revision in Synthetic ACL graft failure
Authors: Etcheto H. Rivarola , Zordán J. , Escobar G. , Collazo C. , Palanconi M. , Autorino C. , Salinas E. Alvarez 
Published: January 2017

The development of synthetic grafts as an alternative to biological grafts for reconstruction of the anterior cruciate ligament dates from 1980. The interest is awakened due to the potential advantages of: The absence of morbidity associated with donor site, and early return to sport. However, this surgical technique has had multiple complications associated with graft: mechanical failures (synthetic graft failure, loss of fixation), synovial foreign body reaction, recurrent stroke, recurrent instability and ultimately, early osteoarthritis. Objectives: We describe the synthetic graft failure LCA, intraoperative findings and details of surgical technique. Methods: Patient 35 years old, with a history of ACL reconstruction four years of evolution in another health center, consultation with the Service knee arthroscopy for acute knee pain left knee during secondary sporting event to a rotation mechanism with fixed foot. On physical examination, presents and positive Lachman maneuver Pivot. Radiografia in a widening of the tibial tunnel is observed. NMR shows a discontinuity of fibers of synthetic graft. Results: First time arthroscopic revision where synthetic plastic LCA identifies with Disruption fiber pattern. Intraoperatively, hypertrophic chronic synovitis localized predominantly in intercóndilo is observed. debridement thereof is performed, and proceeds to the extraction of the synthetic ligament. Then he was made prior cruentado and revival of the edges of the tunnel, filling them with non-irradiated structural bone allograft. At four months as planned and after confirmation by studies incorporating bone graft was performed the second time with the new plastic ACL. It was planned like a primary graft surgery with autologous hamstring prepared in fourfold form, and fixation with modified transtibial technique Biotransfix system proximal and distal screw Biocomposite (arthrex®). A quadruple graft 9 mm was obtained, making good positioning of tunnels and stable fixation. Conclusion: While ACL reconstruction with synthetic graft has favorable medium-term results, the proportion of patients with complications of irreversible nature and high rates of dissatisfaction in the long term we are inclined to dismiss the indication of this technique in primary ACL reconstruction, to despite the potential benefits it offers.
Anterolateral Ligament Reconstruction
Authors: Zordan J. , Etcheto H. Rivarola , Blanchod C. Collazo , Palanconi M. , Salinas E. Álvarez , Autorino CM , Escobar G. 
Published: January 2017

Anterior cruciate ligament (ACL) reconstruction is a common procedure in daily practice with 75 to 97% excellent long-term results. But in certain cases, some patients perceive rotational instability, for this reason the revision rate can be 10 to 15%. Objectives: evaluate functional outcome in revisions of ACL reconstruction associated with ALL. Methods: Between July 2015 and February 2016 (11 knees) Eleven Revision ACL reconstruction were performed with ALL with double incision technique performed by the same surgical team. Inclusion criteria were: ACL reconstruction failures with a grade 2 or 3 Lachman test, a grade 3 pivot-shift without other ligamentary injury lesions associated and complete range of motion. Results: The concept of rotational instability associated with ACL injury has been described more than a decade ago. However, there is no consensus on how to quantify rotational instability in ACL injuries; so when associating an extracapsular technique. Currently there is a lack of high-level evidence comparing isolated ACL repair and associated with the modified reconstruction of ALL that allows us to define therapeutic approaches. The ALL reconstruction associate an ACL reconstruction remains a matter of study. Conclusion: We obtain excellent results in antero – posterior and rotational stability after performing the procedure.
Trends in tissue repair and regeneration
Authors: Galliot Brigitte , Crescenzi Marco , Jacinto Antonio , Tajbakhsh Shahragim 
Published: January 2017

ABSTRACT
The 6th EMBO conference on the Molecular and Cellular Basis of Regeneration and Tissue Repair took place in Paestum (Italy) on the 17th-21st September, 2016. The 160 scientists who attended discussed the importance of cellular and tissue plasticity, biophysical aspects of regeneration, the diverse roles of injury-induced immune responses, strategies to reactivate regeneration in mammals, links between regeneration and ageing, and the impact of non-mammalian models on regenerative medicine.
Late bronze age pottery as indicator of the deposition temperatures of the Minoan pyroclastic products, Santorini, Greece.
Authors: Tema E. , Pavlides S. , Kondopoulou D. 
Published: January 2017

The Minoan eruption of Santorini volcano (Greece) took place in the Late Bronze Age (17th century BC) and produced a great volume of volcanic products that covered the whole island and buried every human settlement under meters of pyroclastic deposits. In this study we used thermal analysis of the magnetic remanence carried by pottery fragments buried under the pyroclastic deposits in order to estimate the thermal effect of the Minoan volcanic products on the pre-eruption habitation level. A total of 70 samples, prepared from 45 independent pottery fragments, have been studied. Samples were collected from three different sites, situated at the southern part of the island. Stepwise thermal demagnetizations reveal that the pottery fragments generally carry a two-component remanent magnetization. Interpretation of the demagnetization results using the normalised intensity decay curves and the orthogonal projection diagrams indicates that most samples were re-heated at temperatures around 160-260o C. The obtained results represent the equilibrium temperatures reached after the deposition of the pyroclastic fall and show that the pyroclastic fall deposits at distances around 6 to 9 km from the eruption vent were still hot enough to reheat the buried pottery at such temperatures.
The CLEARWATER project: preliminary results from the geophysical survey in Tympaki, Crete, Greece.
Authors: Vafidis A. , Andronikidis N. , Hamdan H. , Kritikakis G. , Economou N. , Panagopoulos G. , Soupios P. , Steiakakis E. , Manoutsoglou E. 
Published: January 2017

One of the most important environmental problems in coastal areas is the salinization of ground water. The groundwater contamination due to seawater intrusion is usually caused by a violation of a delicate hydrogeological balance that exists between freshwater and seawater in coastal aquifers. The development of a methodology for the prediction of the systematic sea water intrusion can contribute to the planning of effective prevention measures in the coastal areas. The geophysical techniques offer a suitable non-invasive method for determining the geometric characteristics of an aquifer and monitoring the saline water intrusion. Among all geophysical techniques, the most successful methods, concerning the detection of salinization in the coastal areas, are the electric resistivity and electromagnetic methods. Seismic methods can also help in providing further geological information for the stratigraphy. In this work, we present the preliminary results from the geoelectrical survey conducted in Tympaki basin (Herakleio, Greece) within the framework of the project “geophysiCaL basEd hydrogeologicAl modeling to pRevent pollution from sea WATER intrusion at coastal areas”
Source constraints using ground motion simulations.
Authors: Kiratzi A. 
Published: January 2017

We study the source characteristics of the 9 August 1912, Mw 7.4, Mürefte (Ganos) earthquake that ruptured the Ganos Fault in the westernmost segment of the North Anatolian Fault. We apply the stochastic method for finite-faults in order to simulate strong ground motion acceleration using different fault geometries in terms of therupture initiation and the length of the fault. A first-order approximation of the site effect variation is achieved following an empirical approach based on the topography gradient as a proxy for site-effect. The simulated ground motions, which are calculated at phantom stations, over a grid covering the area of study, satisfactorily produce the regions which were more severely shaken during the 1912 event. We simulate ground motions using a conservative fault length of 50 km (one land segment) which is able to explain the location of the surface ruptures but is not able to reproduce the surface extent of strong shaking. We then use a longer fault ofapproximately 120 km, extending to Saros Bay in the west and to Marmara Sea in the east. The synthetic peak ground acceleration values, indicate a segmented nature of the fault, have at least two patches of strong shaking and significantly predict the observed macroseismic intensities of the 1912 earthquake. Further constrain in our modelling is posed by surface ruptures, with small releasing andrestraining structures and 1.5–5.5 m right-lateral offsets, that have been previously measured by others, at 45 sites of the on-land ~50-km-long fault section.
The value of geological data, information and knowledge in producing landslide susceptibility maps.
Authors: Tsangaratos P. , Koumantakis I. 
Published: January 2017

The paper attempts to illustrate the value of Geological data, information and knowledge in studies that investigate landslide phenomena and how this is reflected in the production of landslide susceptibility maps. In particular, the concepts of data, information, knowledge and wisdom are defined and also the process of converting data into information and information into knowledge. The presented study continuous with a summary that introduces landslide phenomena and the available techniques and methods for identifying and classifying these natural phenomena. It describes the significance of landslide analysis and how this process is essential in order to orient intelligence decisions regarding strategies for regional and urban development. The susceptibility maps that are considered as the outcomes of the over mentioned process, reflects the Geological Knowledge that has been produced by involving expert knowledge and processing data.
Pollution assessment of the Drapetsona Keratsini coastal sea- bed.
Authors: Kapsimalis V. , Talagani P. , Panagiotopoulos I. P. , Kaberi H. , Rousakis G. , Kanellopoulos Th. D. , Iliakis S. , Hatzianestis I. 
Published: January 2017

The pollution status of the Drapetsona-Keratsini coastal environment is assessedthrough sedimentological and geochemical analyses of surface sediments. The results show that the sedimentary seabed consists of sandy silts and silty sands with relatively high moisture content (up to 114%) and carbonate concentration (24 -86%), whilst the levels (measured in μg/g) of some harmful heavy metals , i.e. , As=8 -2677, Cd=0.2-15.4 , Cr=82-428, Cu=18-567, Fe=5700-289,000 , Hg=0.05-0.71 ,Mn=101-1477, Ni=25-122,Pb=18-1394, Sn=1 -18, and Zn=118 -4821 , are particularly high. The implementation of various pollution indices, such as Geoaccumulation Index (Igeo), Potential Ecological Risk Index (RI), Pollution Load Index (PLI), Combined Contamination Index (W), and Modified Contamination Degree (mCd) , together with the evaluation of biological risk using the Sediment Quality Guidelines (ERL/ERM and TEL/PEL) of NOAA indicate a very high degree of pollution with great possibility for serious and irreversible impairments for aquatic communities. The most polluted sector, probably the most heavily contaminated marine environment in Greece, is located in front of the Drapetsona rocky coast (and particularly in the Sfageion Bay), where the synergistic action of urban untreated sewage deposited in the past (before the operation of the sewage treatment plant in Psyttalia) and wastes from local industries or facilities has caused significant degradation of the marine system.
Assessment of heavy metals contamination in the coastal sediments of the broader area of Chios harbor (Aegean Sea)
Authors: Tsoutsia A. , Kapsimalis V. , Poulos S. , Paraskevopoyloy V. , Dassenakis E. 
Published: January 2017

The present study evaluates the pollution level of the surficial sediments of the coastal area around the city of Chios (east Aegean Sea), with particular emphasis on the Port of Chios, fishing shelters, the waste water treatment plant and the electric power plant. For this reason, the metals/trace metals (Pb, Fe, Zn, Cu, Cr, Mn, Al, Ni) along with total organic carbon (TOC) and CaCO3 were analyzed in 23 sediment samples. The results showed that the highest concentrations are observed in the main Port, offshore the power plant station and in a small fishing shelter, without being considered as dangerous for the marine organisms and human health, according to metal pollution indices and Sediment Quality Guidelines.
Ο Ορφέας στην μουσική και στην μουσικοθεωρητική σκέψη των νεότερων χρόνων (15ος-17ος αιώνας)
Authors: Yannou Démètre 
Published: January 2017

L a légende d'Orphée a eu un retentissement particulier dans la musique et dans la pensée musicale des temps modernes. Grâce à la transmission de la légende à travers la littérature et la théorie de la musique du Moyen Âge, le personnage d'Orphée se présente, surtout pendant le XVe, le XVIe et le XVIIe siècle, comme allégorie de la musique à laquelle se réfère aussi bien la musique que la théorie de la musique. Pour la théorie de la musique, la légende d'Orphée s'inscrit dans la tradition de la doctrine des effectus musices. Dans ce cadre, la légende, de même que tous les mythes antiques se référant aux effets de la musique, a une double fonction au début des temps modernes. La première est de livrer des exemples attestant la théorie. Ces exemples subissent un examen critique qui va de la réfutation des faits racontés jusqu'à leur interprétation au moyen de forces naturelles. La deuxième fonction est de fournir des points de repère pour la conception de la réalité musicale de l'époque. Cette fonction concerne le public des milieux de la vie musicale de la Renaissance et du début du XVIIe siècle et elle se manifeste plutôt dans l'historiographie galante que dans la théorie de la musique . proprement dite. Pour la création musicale, le personnage d'Orphée représente d'un côté l'allégorie de la force de l'homme, et de l'autre, à travers la dramatisation de la légende, la force de la musique et plus spécialement du chant — champ d'expression par excellence de l'opéra naissant. «A partir du XVIIIe siècle, avec la naissance de l'acoustique moderne, la référence aux légendes de l'Antiquité disparaît de la théorie de la musique. Par contre, dans la création musicale, la légende d'Orphée continue de susciter l'intérêt des compositeurs jusqu' à la fin du XXe siècle. Néanmoins, la place des premières œuvres musicales inspirées par cette légende au début des temps modernes reste unique dans l'histoire de la musique, parce que ces œuvres s'inscrivent dans une époque pour laquelle la référence aux légendes musicales de l'Antiquité constituait un lieu de convergence de la théorie de la musique, de la création musicale et de la conception que les contemporains eux-mêmes se formaient de la réalité musicale de leur temps.
Foreign Risk, Domestic Problem: Capital Allocation and Firm Performance Under Political Instability
Authors: Col Burcin , Durnev Art , Molchanov Alexander 
Published: January 2017

We argue in this paper that firms with foreign operations misallocate capital and underperform when they face political instability abroad. We develop and test a dynamic model of firm capital allocation under foreign political instability. The model shows that as a political regime becomes less stable, independent of whether the regime becomes less business-friendly or more business-friendly, firms invest suboptimally (i.e., they either overinvest or underinvest), and their marginal q’s diverge further from an optimal level. Using elections and textual analysis of local media during national elections, we construct a novel index of political instability. We find that U.S. firms and industries with a greater exposure to election-induced political instability experience disruptions of investment efficiency that lead to lower valuations and lower total factor productivity. Therefore, international trade is a significant conduit of foreign political instability into U.S. markets. The online appendix is available at https://doi.org/10.1287/mnsc.2016.2638 . This paper was accepted by Gustavo Manso, finance.