bluuebunny/crossref_metadata_2025_split huggingface dataset:
A laparoscopia szerepe a májdaganatok resecabilitasának megítélésébenr
Authors: Dede Kristóf , Mersich Tamás , Nagy Péter , Baranyai Zsolt , Zaránd Attila , ifj. Besznyák István , Faludi Sándor , Jakab Ferenc 
Published: November 2007

Absztrakt
A májdaganatok terápiás lehetőségei közül a sebészi resectio átlagosan 40%-os, 5 éves túlélést, míg a májtranszplantáció (OLTX) ennél is jobb eredményeket biztosíthat. A betegek jelentős része azonban a daganatok száma, elhelyezkedése, disseminatio miatt alkalmatlan a beavatkozásra, és ez sokszor csak a sebészi feltárás során igazolódik. A klinikai, képalkotó és egyéb speciális preoperatív vizsgálatok mellett esetenként fontos szerep juthat a laparoscopiának mind a staging pontosításában, mind a resecabilitas megítélésében.
Retrosprektív módon elemeztük a malignus májelváltozás miatt műtétre került, laparoscopizált betegeink adatait. A 2000. január 1. és 2006. március 31. közötti időszakban az osztályunkon sebészileg májtumor miatt kezelt 310 beteg közül 39 betegnél végeztünk staging laparoscopiát. 22 (56%) esetben primer hepatocellularis carcinoma (HCC), 17 (44%) esetben májmetastasis miatt történt a beavatkozás.
A primer és a szekunder májdaganatokat vizsgálva a laparoscopizált betegek 70%-nál igazoltunk irresecabilitast. A resecabilisnak ítélt betegek esetében azonban csupán 50%-os volt a staging pontossága. Az irresecabilitas okaként legjobban a carcinosis tényét, valamint a daganat multiplex megjelenését lehetett igazolni laparoscopiával, a daganat centrális kiterjedését, a nagyerek invázióját nem jelezte kellő pontossággal.
A malignus májdaganatok preoperatív staging vizsgálatainak egyik eleme lehet a staging laparoscopia, és segíthet megelőzni egy felesleges laparotomiát, azonban minden májresectióra váró betegnél rutinszerűen nem ajánlott, válogatott betegcsoportban javasolható.
Bilateralis carotis interna aneurysmar
Authors: Szabó Gábor Viktor , Szeberin Zoltán , Bíró Gábor , Laczkó Ágnes , Dzsinich Csaba , Acsády György 
Published: November 2007

Absztrakt
A szerzők ismertetik kétoldali carotis aneurysma miatt kezelt öt betegük esetét, áttekintik a vonatkozó irodalmi adatokat és ajánlásokat. A betegek kivizsgálásakor duplex scan, angiographia és CT készült. Az aneurysmák átmérője 9–40 mm volt. Sok tényező mérlegelése, egyedi döntések alapján két betegen kétoldali, további kettőn egyoldali rekonstrukciós műtéteket végeztek end-to-end anastomosissal, egy esetben a konzervatív kezelést választották. Egy betegen multiplex aneurysmatosis miatt több ülésben végeztek műtéteket. Posztoperatív szövődményként egy esetben reverzibilis stroke alakult ki. Az operált és a nem operált betegeket éveken át (3–14 év), folyamatosan, félévenként duplex scan vizsgálattal ellenőrzik. A carotis aneurysma magas kockázatú szövődményeinek megelőzésére (kompresszió, ruptura, embolisatio) a 15 mm-es legnagyobb átmérő felett, növekedés, thromboticusfelrakódás vagy neurológiai tünetek esetén műtéti megoldást javasolnak.
Collum chirurgicum törését rögzítő, elvándorolt Kirschner-tűződrótok sikeres szívsebészeti eltávolításar
Authors: Hüttl Tivadar , Kassai Imre , Hartyánszky István , Daróczi László , Friedrich Orsolya , Széphelyi Katalin , Szabolcs Zoltán 
Published: November 2007

AbsztraktFelkartörések ellátásánál használt tűződrótok dislocatióját és elvándorlását találták az első kontrollvizsgálaton mindössze 13 nappal a traumatológiai ellátást követően. Észleléskor az egyik tűződrót a lateralis mellkasfal izomzatában helyezkedett el, míg a másik, hegyével a szívcsúcs izomzatába fúródva, a szívkontrakciókkal szinkron mozgott. Eltávolításukra szívsebészeti műtőben, bal oldali anterolateralis thoracotomiából került sor.
Hydrotherapy Versus Conventional Land-Based Exercise for the Management of Patients With Osteoarthritis of the Knee: A Randomized Clinical Trial
Authors: Silva Luciana E , Valim Valeria , Pessanha Ana Paula C , Oliveira Leda M , Myamoto Samira , Jones Anamaria , Natour Jamil 
Published: November 2007

Background and Purpose
This study was designed to evaluate the effectiveness of hydrotherapy in subjects with osteoarthritis (OA) of the knee compared with subjects with OA of the knee who performed land-based exercises.

Subjects and Methods
Sixty-four subjects with OA of the knee were randomly assigned to 1 of 2 groups that performed exercises for 18 weeks: a water-based exercise group and a land-based exercise group. The outcome measures included a visual analog scale (VAS) for pain in the previous week, the Western Ontario and McMaster Universities Osteoarthritis Index (WOMAC), pain during gait assessed by a VAS at rest and immediately following a 50-foot (15.24-m) walk test (50FWT), walking time measured at fast and comfortable paces during the 50FWT, and the Lequesne Index. Measurements were recorded by a blinded investigator at baseline and at 9 and 18 weeks after initiating the intervention.

Results
The 2 groups were homogenous regarding all parameters at baseline. Reductions in pain and improvements in WOMAC and Lequesne index scores were similar between groups. Pain before and after the 50FWT decreased significantly over time in both groups. However, the water-based exercise group experienced a significantly greater decrease in pain than the land-based exercise group before and after the 50FWT at the week-18 follow-up.

Discussion and Conclusion
Both water-based and land-based exercises reduced knee pain and increased knee function in participants with OA of the knee. Hydrotherapy was superior to land-based exercise in relieving pain before and after walking during the last follow-up. Water-based exercises are a suitable and effective alternative for the management of OA of the knee.
Effect of stack pins on the stiffness of interlocking nails in an unstable osteotomy model
Authors: Basinger R. R. , Suber J. 
Published: November 2007

SummaryInterlocking nails have been shown to be an effective means to stabilise long bone fractures. When used in non-load sharing fracture repairs with minimal medullary canal filling, the authors noted instabilityofthe main fracture fragments. The addition of multiple intramedullary pins in stack pin fashion eliminated the instability. ILN and ILN/SP constructswere loaded in four-point bending using an unstable osteotomy model. The gap between the ILN and ILN/SP groups was compared. Significant changes were seen with the ILN/SP constructs in the cranial to caudal plane.
In vivo comparison of two hinged transarticular external skeletal fixators for multiple ligamentous injuries of the canine stifle
Authors: Hosgood G. , Ramirez S. , Lopez M. , Lauer S. 
Published: November 2007

SummaryControlled mobilization after the surgical repair of multiple disrupted ligaments is considered to be essential for return to normal function. This study compared the outcome after post-surgical mobilization without any protection to mobilization with two transarticular external skeletal fixator hinge prototypes after surgical repair of experimental injuries to multiple stifle ligaments in 15 hounds. The repair was left unprotected (NP: n = 5), protected with a self-centering hinge (SH: n = 5) andwith a conventional hinge (CH: n = 5) for four weeks after surgical repair. Outcome measurements included: orthopaedic examination, goniometric and thigh circumference (TC) measurements, total tibial translation (TT), radiographs, and kinetic gait analysis up to 120 days post-operatively. Asignificant effect of treatment controlling for time for medial collateral stability, TC, TT, osteophyte scores, peakvertical force (PVF) and vertical impulse (VI) was not found. There was a significant difference between time points for subjective lameness scores, TC, PVF, VI, TT and osteophyte scores within treatment. Stifle extension was significantly decreased in CH dogs compared to NP dogs on day 28. Stifle flexion was significantly decreased in CH and SH dogs on day 28 compared toNP dogs. Stifle flexion was normal in all dogs by day 42. Both hinges compromised stifle flexion initially after hinge removal, but range of motion normalized within two weeks. Hinges were not indicated for adjunct treatment after repair of multiple experimentally induced ligamentous stifle injuries.
Pressure distributions on the medial tibial plateau after medial meniscal surgery and tibial plateau levelling osteotomy in dogs
Authors: Pozzi A. , Litsky A. S. , Field J. , Apelt D. , Meadows C. , Johnson K. A. 
Published: November 2007

Summary
Objective: To evaluate the effect of medial meniscal release (MMR) and medial, caudal pole hemimeniscectomy (MCH) on pressure distribution in the cranial cruciate ligament (CCL) deficient canine stifle, and with tibial plateau levelling osteotomy (TPLO). Animals: Twelve adult dogs. Methods: In experiment one, six pairs of cadaveric canine stifles with an intact CCL were axially loaded with a servo-hydraulic material testing machine and pressure distributions were mapped and quantified using pressure sensitive films. Axial loading of each joint was then repeated following MMR, and again after MCH. In experiment two, six pairs of cadaveric canine stifles with or without TPLO were tested before and after CCL transection, and each MMR and MCH procedure using the same methods of experiment 1. Results: In experiment one, MMR and MCH had significant effects on the pressure distribution resulting in a 2.5-fold increase in the percentage of surface area with pressure higher than 10 MPa. In experiment two, CCL transection resulted in a significant change in pressure distribution only in the stifle without TPLO (P<0.05). Both MMR and MCH resulted in a 1.7-fold increase in the percentage of area with peak pressure in the stifle with TPLO (P<0.05). Conclusions: Meniscal surgery results in a change in pressure distribution and magnitude within the medial compartment of the stifle. Clinical relevance: Compromised function of the meniscus by either MMR or MCH result in stress concentration which may predispose to osteoarthritis.
Comparison of radiofrequency treatment and mechanical debridement of fibrillated cartilage in an equine model
Authors: Edwards R. B. , Cole B. J. , Muir P. , Markel M. D. , Lu Y. 
Published: November 2007

Summary
Objective: To compare a radiofrequency energy (RFE) prototype probe to mechanical debridement (MD) and a commercially available RFE system used for chondroplasty in the treatment of an experimentally created partial thickness cartilage lesion in horses. The study design was experimental, randomized complete block, n=8, using fifteen mature ponies. Methods: Grade 2 to 3 cartilage lesions were prepared in both patellae. After 10 months duration, the injuries were used to study the effects of MD, a commercially available bipolar RFE device (CoVac 50; ArthroCare Corporation) and a prototype monopolar RFE device (Smith & Nephew Endoscopy). Six months after treatment the patellae were examined for chondrocyte viability and cartilage structure. Results: Mean depth of cell death was significantly different among groups (controls, MD <prototype<CoVac 50) (P<0.05). Total histologic scores did not demonstrate any significant differences among the controls, MD and prototype RFE groups, which were all better than the CoVac 50 scores (P<0.05). There was a trend for the prototype RFE probe treated regions to have better surface structural characteristics than MD (P=0.11). Cartilage thickness was greater for the prototype RFE group than all other groups, and was the thinnest for the CoVac 50 group (P<0.05). Conclusion: When thermal chondroplasty is performed with a power-controlled prototype RFE probe, there is a better surface smoothing effect compared to MD, which causes less chondrocyte death and has the potential to maintain thicker cartilage compared to the commercially available RFE system.
Prevalence of hip dysplasia according to official radiographic screening, among 31 breeds of dogs in France
Authors: Remy D. , Viguier E. , Carozzo C. , Collard F. , Cachon T. , Maitre P. , Fau D. , Genevois J.-P. 
Published: November 2007

SummaryIn order to determine the prevalence of hip dysplasia (HD) from radiographs that were submitted for authorative grading, and its changes over the time in 31 breeds of dogs in France, a 14-year retrospective study was conducted. Significant differences were observed between breeds, with HD prevalence ranging from 59.7% (Cane Corso) to 3.9% (Siberian Husky). When comparing the 1993–1999 with the 2000–2006 period in 15 breeds, a significant decrease in HD prevalence was detected in Berger Picard, Bernese Mountain dog, Briard, Gordon Setter, White Swiss Sheepdog and Rottweiler. Modifications observed in the other breeds were not statistically significant.
Fracture configurations of the equine radius and tibia after a simulated kick
Authors: Oswald S. , Jäggin S. , Piskoty G. , Michel S. , Auer J. A. , Fürst A. E. 
Published: November 2007

SummaryThe objective of this postmortem study was to determine the fracture configurations of the equine radius and tibia after a simulated kick. Fracture configurations of 35 radii and 36 tibiae from 19 adult horses were evaluated after a simulated kick in an experimental exvivo study. The bones were dissected, the proximal and distal ends were embedded in resin, fixed horizontally and preloaded in compression, and a steel impactor, designed to simulate a shod equine hoof, was dropped from a height of three to six metres onto the diaphysis. The experiments were filmed with a high-speed camera (30,000 pictures/second). The bones were then photographed and radiographed using a C-arm based 3D imaging device. A software programme (Osirix) was used to reconstruct the fissured and fractured bones three-dimensionally on a computer screen for assessment of the fracture configuration and fissure lines. Incomplete fractures occurred in 26 bones and complete fractures in 42. The complete fractures included 22 butterfly and 20 simple fractures; the latter included 17 oblique, two transverse and one longitudinal fracture. Additional longitudinal fissures occurred in 98% of the fractures. The butterfly fragment was always located on the side opposite the impact. There was a significant correlation between the type of bone and the fracture configuration: butterfly and oblique fractures occurred more frequently in the tibia, and incomplete fractures occurred more frequently in the radius. The data collected can be used to optimize evaluation of fractures and fissures caused by a kick and thereby improve surgical stabilization.
Biomechanical characteristics of allogeneic cortical bone pins designed for fracture fixation
Authors: Edwards M. R. , James S. P. , Dernell W. S. , Scott R. J. , Bachand A. M. , Withrow S. J. , Liptak J. M. 
Published: November 2007

SummaryThe biomechanical characteristics of 1.2 mm diameter allogeneic cortical bone pins harvested from the canine tibia were evaluated and compared to 1.1 mm diameter stainless steel pins and 1.3 mm diameter polydioxanone (PDS) pins using impact testing and four-point bending. The biomechanical performance of allogeneic cortical bone pins using impact testing was uniform with no significant differences between sites, side, and gender. In four-point bending, cortical bone pins harvested from the left tibia (204.8 ± 77.4 N/mm) were significantly stiffer than the right tibia (123.7 ± 54.4 N/mm, P=0.0001). The site of bone pin harvest also had a significant effect on stiffness, but this was dependent on interactions with gender and side. Site C in male dogs had the highest mean stiffness in the left tibia (224.4 ± 40.4 N/mm), but lowest stiffness in the right tibia (84.9 ± 24.2 N/mm). Site A in female dogs had the highest mean stiffness in the left tibia (344.9 ± 117.4 N/mm), but lowest stiffness in the right tibia (60.8 ± 3.7 N/mm). The raw and adjusted bending properties of 1.2 mm cortical bone pins were significantly better than 1.3 mm PDS pins, but significantly worse than 1.1 mm stainless steel pins (P<0.0001). In conclusion, cortical bone pins may be suitable as an implant for fracture fixation based on initial biomechanical comparison to stainless steel and PDS pins used in clinical practice.
Computed tomographic evaluation of the canine intercondylar notch in normal and cruciate deficient stifles
Authors: Allen D. A. , Henrikson T. D. , Lehenbauer T. W. , Lewis B. A. 
Published: November 2007

SummaryIn the human and veterinary orthopaedic literature it has been implied that intercondylar notch stenosis is a mechanical factor in cranial cruciate ligament rupture and intraarticular graft failure. The patients in this study were classified as normal (32), unilateral cruciate rupture (23), or bilateral cruciate rupture (17). The dogs were placed under general anaesthesia and both stifles were scanned via computed tomography (CT) as previously described. Three CT slices at predetermined levels were evaluated within the notch. Measurements included opening notch angle, notch width and height, condyle width, and notch width index (notch width/ condyle width) at two different heights within the notch. Intercondylar notch measurements at the most cranial extent were significantly more narrow in unilateral and bilaterally affected stifles when compared to the normal population. Significant differences were noted in the opening notch angle (ONA), notch width index (NWI), NWI at two thirds notch height (NWI2/3), and tibial slope index (TSI). No significant differences were noted between unilateral and bilateral affected stifles. Increased mechanical contact of the cranial cruciate ligament with a stenotic intercondylar notch may predispose the ligament to mechanical wear and structural weakening. Intercondylar notch measurements have been used as a tool to predict the risk of anterior cruciate ligament injury in young human athletes, and to assess the risk factors for intra-articular graft replacements. Our findings may be useful in developing similar predictive models using stifle CT scans.
Synthesis Pengo System plates for the treatment of long-bone diaphyseal fractures in dogs
Authors: Otoni C. C. , Pereira-Júnior O .C. M. , Blum A. L. L. , Vulcano L. C. , Rahal C. 
Published: November 2007

SummaryA Brazilian orthopaedic company designed a stainless steel plate called Synthesis Pengo System (S.P.S.), which has one fixed and one changeable extremity. According to the assembly of the changeable extremity, it is possible to obtain dynamization or neutralization of the fracture site. Since the S.P.S. plate was developed for use in human patients, the aim of this study was to evaluate this system in long-bone diaphyseal fractures in dogs. Eight dogs with closed diaphyseal fractures of the femur (n= 1), radius and ulna (n=5), and tibia (n=2) were used. Patients were aged seven months to three years and weighed 18 to 31.2 kg. The S.P.S. plate was assembled with one fixed extremity and one changeable extremity in dynamization mode. The trail bar was positioned for synthesis modules with holes for cortical screws. The modules were positioned close to one another in two fractures and far away from the fracture site in the others. The bone healing occurred by external callus. Since motion at the fracture site determines the amount of callus required, the secondary bone healing that was observed in all of the cases indicated less rigid fixation of this system. A potential benefit of this system was a lesser interface contact with the bone since it was only done by trail bar. The major disadvantage was the prominence of the implant. It was possible to conclude that the S.P.S. plate appears to be a suitable method for the treatment of diaphyseal fractures in dogs.
Self‐Catalyzed Oxidation of Sulfides with Hydrogen Peroxide: A Green and Practical Process for the Synthesis of Sulfoxides
Authors: Shi Feng , Tse Man Kin , Kaiser Hanns Martin , Beller Matthias 
Published: November 2007

AbstractA self‐catalyzed selective oxidation of sulfides to sulfoxides has been developed. The scope of the protocol is demonstrated in the selective oxidation of 17 different substrates. High yields and chemoselectivity (in general >90 %) are achieved in most cases.
Promoting Effect of Imidazolium Ionic Liquid in the Reaction of Chromium Carbene Complexes with Alkynes: A Most Simple and Convenient Way to Get Demetallated‐Product!
Authors: Chakraborty Amarnath , Maishal Tarun K. 
Published: November 2007

AbstractImidazolium ionic liquid serves as an interesting alternative solvent for performing the reaction of chromium carbene complexes with alkynes, with an advantage of enhancing the activity, selectivity and in situ generation of demetallated organic products.
Predictors of nonfatal assault injury to public school teachers in Los Angeles City
Authors: Casteel Carri , Peek‐Asa Corinne , Limbos Mary Ann 
Published: November 2007

AbstractBackgroundSchool violence is a well‐recognized concern for student safety, although less recognized as an occupational hazard. This study examines school characteristics that increase the odds of nonfatal teacher assaults and the influence of community crime on these relationships.MethodsAssaults from California Employers' Reports of Occupational Injury or Illness were linked to California Department of Education data for Los Angeles City public schools. Community crime rates were calculated from Los Angeles Police Department data. Random‐intercept logistic models were used to examine associations between school characteristics and teacher assault injury across community crime levels.ResultsTeacher assault was associated with teaching staff's total years of educational service, gender, and education level. Community crime surrounding the schools influenced the relationships between teacher assault injury and school, student and teacher characteristics.ConclusionsSchool‐based programs to reduce violence on school grounds may be more effective in collaboration with programs to prevent community crime. Am. J. Ind. Med. 50:932–939, 2007. © 2007 Wiley‐Liss, Inc.
Social disparities in the burden of occupational exposures: Results of a cross‐sectional study
Authors: Quinn Margaret M. , Sembajwe Grace , Stoddard Anne M. , Kriebel David , Krieger Nancy , Sorensen Glorian , Hartman Cathy , Naishadham Deepa , Barbeau Elizabeth M. 
Published: November 2007

AbstractBackgroundMost occupational studies evaluate a single exposure in relation to a particular disease. However, workers typically experience multiple exposures simultaneously. There is also increasing evidence of disparities in health by sociodemographic characteristics, mostly related to social position such as gender, race/ethnicity, immigration status, income, and education. Little information exists on the worker experience of multiple occupational exposures as they vary among social groups. The objectives of this article were to: assess the burden of exposures reported within 1 year by a socially diverse population working in a range of industries; and evaluate whether sociodemographic characteristics affected the patterns of these exposures.MethodsStudy participants were from 14 unionized worksites in meat processing, electrical lighting manufacturing, retail grocery stores, and school bus driving. A cross‐sectional study design used a self‐administered, computer‐assisted questionnaire (English and Spanish) to assess sociodemographic characteristics and nine workplace exposures, within the past year. An interviewer‐administered job history also was collected.ResultsTwelve hundred eighty‐two workers (72%) completed the survey: 36% women, 23% Latino, 39% black, 24% white, and 48% born outside the US. The prevalence of high exposures ranged from 21% (chemicals) to 39% (neck strain). Forty‐six percent reported three or more high exposures. Exposure reporting varied among sociodemographic groups. Some of the disparities were explained by the jobs held by different groups, but after statistically controlling for job, many disparities remained.ConclusionsSociodemographic characteristics should be considered when conducting exposure assessments using questionnaires. More research is needed to understand how social characteristics may influence exposures. Am. J. Ind. Med. 50:861–875, 2007. © 2007 Wiley‐Liss, Inc.