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  • 1990-1994  (11)
Material
Years
Year
  • 1
    Electronic Resource
    Electronic Resource
    Springer
    International orthopaedics 14 (1990), S. 31-35 
    ISSN: 1432-5195
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Description d'une technique d'ostéotomie tibiale plane oblique qui permet de corriger à la fois le varus et la rotation interne chez le jeune enfant. Cette intervention a été réalisée des deux côtés chez quatre enfants et a donné des résultats favorables.
    Notes: Summary A technique of oblique tibial osteotomy is described which is effective in correcting varus and medial rotational deformities in young children. The oblique cut in one plane corrects both elements of the deformity at the same time. We have used the method on both legs in four children and satisfactory results were obtained.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    International orthopaedics 17 (1993), S. 20-22 
    ISSN: 1432-5195
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Un garçon de 9 ans présentait des doigts à ressaut congénitaux. Ceux-ci ont été traités chirurgicalement. Cette anomalie est rare, sauf en ce qui concerne le pouce. Le ressaut semble être la conséquence d'un renflement fusiforme des tendons fléchisseurs.
    Notes: Summary Congenital triggering of a digit other than the thumb is a rare. A nine year old boy has been treated for congenital, multiple trigger digits in addition to the thumb. The operative findings were only slight thickening of the flexor pulley and noticeable fusiform swelling of the flexor tendons.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    International orthopaedics 14 (1990), S. 75-78 
    ISSN: 1432-5195
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Le degré de vascularisation des greffes osseuses libres pratiquées ches le lapin a été contrôlé pendant 8 semaines après la transplantation en utilisant la technique de lavage à l'hydrogène. La vascularisation était présente à 2 semaines aussi bien dans les autogreffes que dans les allogreffes. Mais le degré de vascularisation était significativement plus bas dans les allogreffes que dans les autogreffes. La vascularisation des autogreffes augmente rapidement entre la 3ème et la 4ème semaine avec un maximum 4 semaines après la transplantation. Le degré d'accroissement de la vascularisation est plus lent dans les allogreffes. Cette étude démontre que la technique du lavage à l'hydrogène est une méthode utile pour contrôler la vascularisation et qu'elle peut être appliquée en clinique.
    Notes: Summary The rate of blood flow in free bone grafts in rabbits was monitored for 8 weeks after transplantation using the hydrogen washout technique. Blood flow was present at 2 weeks in both autografts and allografts, although the rate was significantly lower in the allograft compared to the autograft. Autografts showed a rapid increase from 2 to 3 weeks and a maximum flow 4 weeks after transplantation, whereas in allografts the rate of increase was slower. This study has demonstrated that the hydrogen washout technique is a useful method of monitoring blood flow and can be applied to clinical investigations.
    Type of Medium: Electronic Resource
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  • 4
    Electronic Resource
    Electronic Resource
    Springer
    International orthopaedics 18 (1994), S. 32-37 
    ISSN: 1432-5195
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Deux enfants, l'un de 6 ans et 6 mois et l'autre de 6 ans et 5 mois, présentaient un syndrome de Russell-Silver associé à une maladie de Legg-Perthes-Calvé typique. Ils souffraient de la région inguinale ou de la cuisse du côté court et d'une boiterie progressive. Après 6 et 4 ans de traitement non chirurgical les lésions de la hanche se sont cliniquement et radiologiquement améliorées et l'inégalité de longueur des membres inférieurs n'a pas augmenté. A notre connaissance, ce sont les premiers cas publiés d'association d'une maladie de Legg-Perthes-Calvé avec un syndrome de Russell-Silver.
    Notes: Summary Perthes' disease was seen in two boys, aged 6 1/2, with the Russell-Silver Syndrome. Both presented with groin or thigh pain in their shortened side together with a progressive limp. They were treated conservatively, and when reviewed 6 1/2 years after diagnosis the lesions of the hip had improved clinically and radiographically. The leg length discrepancy did not increase.
    Type of Medium: Electronic Resource
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  • 5
    ISSN: 1432-5195
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Afin d'étudier la prolifération in vitro des cellules tumorales malignes des os et des tissus mous, nous avons utilisé des molécules reconstituées de la membrane basale organisées en barrières. Un grand nombre de cellules provenant de tumeurs malignes humaines ont montré un taux élevé de prolifération bien que les fibroblastes n'aient fait preuve d'aucune aptitude à franchir la barrière de la membrane basale. Dans les fibroblastes les cellules infectées par le H-ras oncogène ont proliféré beaucoup plus que les rangées apparentées. Les cultures primaires de cellules tumorales malignes ont montré cette prolifération, contrairement aux cellules non-métastatiques et aux fibroblastes. On a constaté que la liaison dans la membrane basale des cellules tumorales à la laminine déclenche la sécrétion de collagènase IV et la motilité, qui sont considérées comme les deux facteurs cruciaux de la prolifération. Nous avons réalisé ces études de la prolifération dans le but de tester les facteurs susceptibles de l'entraver. Un peptide synthétique, le Tyr-Ile-Gly-Ser-Arg (YIGSR), de la chaîne B1 de la laminine s'est montré capable d'arrêter la prolifération des cellules du sarcome humain HT1080, l'YIGSR peut également réduire in vivo l'envahissement du poumon. Ces résultats permettent de penser que ces expériences sont utiles, essentiellement pour déterminer le potentiel de prolifération, ensuite pour préciser le mécanisme de l'envahissement et enfin pour mettre au point des thérapeutiques efficaces contre la prolifération et les métastases des tumeurs malignes des os et des tissus mous.
    Notes: Summary We have used reconstituted basement membrane molecules which have formed into barriers in order to investigate the invasive potential of malignant bone and soft tissue tumour cells in vitro. A number of cell lines established from human malignant tumours demonstrated a high degree of invasiveness, although fibroblasts showed no ability to penetrate the basement membrane barrier. H-ras oncogene transfected cells into the fibroblasts were much more invasive than the parent lines. Primary cultures of malignant tumour cells demonstrated invasiveness, while those of nonmetastatic cells and fibroblasts did not. The binding of tumour cells to laminin in the basement membranes was found to induce secretion of collagenase and motility which are crucial factors for invasion. A synthetic peptide, Tyr-Ile-Gly-Ser-Arg, was able to suppress the invasiveness of HT1080 human fibrosarcoma cells, and also reduced lung colonisation in vitro. The results suggest that the in vitro assay was useful, firstly to determine the invasive potential, secondly to investigate the mechanism of invasion, and finally to development treatment against invasion and metastases.
    Type of Medium: Electronic Resource
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  • 6
    Electronic Resource
    Electronic Resource
    Springer
    International orthopaedics 17 (1993), S. 57-59 
    ISSN: 1432-5195
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Les tumeurs primitives et les métastases rotuliennes sont rares. Nous présentons deux cas de métastases patellaires d'un carcinome cutané, l'un d'entre eux présentant une atteinte bilatérale. Deux cas seulement de métastases patellaires bilatérales ont été décrits dans la littérature anglos-saxonne.
    Notes: Summary Primary bone tumours and metastases of the patella are rare. We report two cases of metastases, one from a carcinoma of the salivary gland which was bilateral and the other from extramammary Paget's disease with invasive carcinoma.
    Type of Medium: Electronic Resource
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  • 7
    Electronic Resource
    Electronic Resource
    Springer
    International orthopaedics 17 (1993), S. 73-76 
    ISSN: 1432-5195
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Nous avons examiné 106 patients ayant bénéficié, entre 1984 et 1989, d'une arthrodèse cervicale antérieure à l'aide de l'instrumentation de Caspar. Le diagnostic pré-opératoire était une spondylose cervicale chez 73 patients, une lésion traumatique chez 12, l'ossification du ligament longitudinal postérieur chez 9, une hernie discale cervicale chez 6 et une tumeur ou une autre lésion chez les 6 autres. Parmi ces 106 patients, 56 ont été arthrodésés sur 2 niveaux et 27 sur 3 niveaux. Avec un recul moyen de 4 ans 7 mois, trois absences de consolidation ont été observées parmi les 83 patients ayant eu une arthrodése sur plusieurs niveaux. Un desserrage des vis est survenu chez 8 des 106 patients, il n'y eu pas de perforation oesophagienne.
    Notes: Summary We reviewed 106 consecutive patients who had undergone anterior cervical fusion with the Caspar instrumentation system between 1984 and 1989. Preoperative diagnoses were cervical spondylosis in 73 patients, a traumatic lesion in 12, ossification of the posterior longitudinal ligament in 9, cervical disc herniation in 6, and tumour or miscellaneous lesions in 6. In the 106 patients, 56 had two levels fused and 27 had three levels fused. At an average duration of follow-up of 4 years and 7 months, nonunion occurred in 3 of the 83 patients with multiple level fusions. Screw loosening occurred in 8 of the 106 patients, but there was no oesophageal perforation.
    Type of Medium: Electronic Resource
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  • 8
    Electronic Resource
    Electronic Resource
    Springer
    International orthopaedics 17 (1993), S. 389-396 
    ISSN: 1432-5195
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Nous avons étudié, sur la patte de rat, choisie comme modèle de transplant, l'effet du simple stockage au froid dans la solution Euro-Collins sur la prolongation du temps de conservation. Les pattes, amputées à mi-cuisse, ont été simplement plongées dans la solution, puis conservées dans un réfrigérateur à la température de 4°C. Après des durées variables de stockage au froid les pattes ont été greffées sur d'autres rats isogéniques, de façon micro-chirurgicale. Le taux de survie des transplants après 12, 24, 48 et 72 heures de conservation fut respectivement de 100%, 90%, 67% et 50%, et la plus longue durée de conservation efficace fut de 78 heures. Les taux de survie ont diminué de façon importante lorsque les transplants étaient d'abord perfusés avec la solution Euro-Collins puis immergés dans cette même solution. Dans un troisième groupe d'expériences, les pattes amputées furent conservées de façon traditionnelle par stockage au froid à l'air, et les taux de survie des greffes diminuèrent encore plus. L'évaluation par la mesure du gonflement de la patte greffée ainsi que l'examen microscopique ont confirmé l'efficacité de la simple immersion sans perfusion.
    Notes: Summary The effect of simple cold storage in Euro-Collins solution on prolonging successful preservation time was examined on an established rat limb transplant model. Limbs amputated at mid-thigh level were simply immersed in the solution and stored in a refrigerator at 4°C. After varying periods of cold storage, the limb was orthotopically grafted to another isogeneic rat using microsurgical techniques. The survival rates for 12, 24, 48 and 72 hours' storage were 100%, 90%, 67% and 50% respectively, and the longest time of successful preservation achieved was 78 hours. Survival rates were greatly decreased when amputated limbs were initially perfused with Euro-Collins solution and immersed in the same solution. In a third set of experiments, the limbs were preserved by a conventional method of cold storage in air, and the survival rates were decreased even further. Evaluation by measuring postoperative paw swelling and microscopic examination of the grafts further confirmed the effectiveness of the simple immersion method without perfusion.
    Type of Medium: Electronic Resource
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  • 9
    Electronic Resource
    Electronic Resource
    Hoboken, NJ : Wiley-Blackwell
    Journal of Biomedical Materials Research 25 (1991), S. 515-523 
    ISSN: 0021-9304
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine , Technology
    Notes: We have previously studied a large number of histological specimens of biomaterials and found that regions with and without an intervening fibrous membrane coexisted in many specimens. Therefore, it appears necessary to perform an evaluation of the entire specimen when histologically assessing the affinity of bone for a biomaterial. Accordingly, we performed a quantitative histological evaluation of hydroxyapatite (HAP)- and titanium- oxide(TiO2)-coated Ti-6Al-4V and uncoated Ti-6Al-4V (control) by determining the affinity index. This was defined as the length of bone directly opposed to the implant/the total length of the bone--implant interface X 100%. The test materials were inserted into the distal epiphyseal region of the femurs of adult dogs, and follow-up quantitative histological comparisons were performed from 4 weeks to 96 weeks. The HAP-coated implants had the highest affinity index 4 weeks after insertion, and this superiority was maintained up to 96 weeks. There was a significant difference in affinity index between HAP-coated implants and control implants (P 〈 0.001), while TiO2-coated implants showed no significant difference in comparison to the control.
    Additional Material: 5 Ill.
    Type of Medium: Electronic Resource
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  • 10
    Electronic Resource
    Electronic Resource
    Hoboken, NJ : Wiley-Blackwell
    Journal of Biomedical Materials Research 27 (1993), S. 557-563 
    ISSN: 0021-9304
    Keywords: Chemistry ; Polymer and Materials Science
    Source: Wiley InterScience Backfile Collection 1832-2000
    Topics: Medicine , Technology
    Notes: The interface shear strength of uncoated Ti-6Al-4V, dense sintered hydroxyapatite (HA), and HA-coated Ti-6Al-4V were compared. Interface shear strength was determined using a transcortical push-out model in dogs 4 and 12 weeks after implantation. The interface shear strength of dense sintered HA and HA-coated Ti-6Al-4V was significantly higher than that of uncoated Ti-6Al-4V (P 〈 .001). There was no significant difference between the interface shear strength of dense sintered HA and HA-coated Ti-6Al-4V. After the push-out test for HA-coated implants, the regions fractured at the bone-coating interface and at the coating-titanium interface coexisted at 4 weeks after implantation. At 12 weeks, the fracture site was, in all cases, the HA coating-titanium interface, and, in a few samples, fractures inside the coating layer also were visible. © 1993 John Wiley & Sons, Inc.
    Additional Material: 6 Ill.
    Type of Medium: Electronic Resource
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