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  • 1
    Electronic Resource
    Electronic Resource
    Spontaneous remission of a solitary intraspinal synovial cyst of the lumbar spine (2000)
    Springer
    European spine journal 9 (2000), S. 85-87 
    Details
    ISSN: 1432-0932
    Keywords: Key words Lumbar spine ; Synovial cyst ; Radiculopathy ; Facet joint
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract We report on a 15-year-old boy in whom a spontaneous remission of a symptomatic synovial cyst, possibly emanating from the L4-5 facet joint, was noted. The medical history suggested that sport-related overactivity and/or minor trauma was the underlying cause. Conservative treatment for several months may be one treatment option if the cyst wall is not calcified and the symptoms and signs related to radiculopathy show a gradual decrease.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s005860050016
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Flexibility and alignment of the cervical spine after laminoplasty for spondylotic myelopathy (1995)
    Springer
    International orthopaedics 19 (1995), S. 116-121 
    Details
    ISSN: 1432-5195
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Les effets à long terme de la laminoplastie sur la mobilité et l'alignement du rachis cervical ont été étudiés par radiographie et tomodensitométrie. Le travail a porté sur 56 patients atteints de myélopathie spondylitique multisegmentaire, ayant subi une laminoplastie ouverte C3–C7 avec une greffe osseuse réalisant un espaceur autogène. Le recul est en moyenne de 5.8 ans (de 2 à 10.4) et les résultats ont montré une amélioration neurologique satisfaisante dans 73% des cas. La flexion était diminuée de 35% et l'extension de 57%. Cette diminution de la mobilité était statistiquement significative. On a également observé une réduction du glissement vertébral et une légère réduction de la lordose. L'augmentation de la taille du canal après l'intervention chirurgicale était de 48% et de 40% au dernier examen; à ce moment elle avait disparu dans 8% des cas. Les laminoplasties ouvertes étendues assurent un meilleur pronostic neurologique chez les patients atteints de spondylite multisegmentaire en maintenant la taille du canal et en préservant la stabilité vertébrale.
    Notes: Summary The long term effects of laminoplasty on cervical movement and alignment were investigated by radiography and CT scans in a study of 56 patients with multisegmental myelopathy who had undergone a C3 to C7 open-door laminoplasty. Follow up averaged 5.8 years. Satisfactory neurological improvement occurred in 73%. Cervical flexion decreased by 35% and extension by 57%; the decrease of both movement was statistically significant. Decreased vertebral slip, as well as slightly reduced lordosis, was seen after operation. Increase in measured canal size after operation and at follow up was 48% and 40%; 8% of the expanded canal size was lost at the last follow up. Expansive open-door laminoplasty leads to a better neurological prognosis in this group of patients, while maintaining an increase in canal size and preserving spinal stability.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00179972
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Lumbosacral dumb-bell neurilemmoma approached by microsurgical interlaminar foraminotomy (1996)
    Springer
    International orthopaedics 20 (1996), S. 119-122 
    Details
    ISSN: 1432-5195
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé. Cette communication concerne une patiente âgée de 33 ans ayant subi une foraminotomie interne par microchirurgie pour ablation d’un neurinome de type «dumb-bell» (en forme d’haltère) placéà la racine nerveuse L5. La tumeur s’était développée jusqu’à la position de sortie du neuroforamen à L5-S1 sur la gauche et comprimait le sac dural ainsi que la racine nerveuse S1. Une laminotomie partielle aux niveaux L4-5 et L5-S1 avec préservation de l’arc neural postérieur suivie d’une foraminotomie interne par microchirurgie au niveau L5-S1 ont permis un accès total à la racine nerveuse affectée et donc à l’énucléation complète de la tumeur. Une foraminotomie par microchirurgie permettant de préserver la stabilité de l’elément postérieur et le mouvement de la colonne vertébrale est l’une des options conseillées pour l’ablation d’une tumeur intra-foraminale lombo-sacrée.
    Notes: Summary. The case history of a patient with a dumb-bell neurilemmoma arising from the L5 nerve root is described. The tumour extended into the outlet of the neural foramen at L5-S1 on the left and was also compressing the dural sac and the S1 nerve root. A limited laminotomy at L4-5 and L5-S1, with preservation of the neural arch, was followed by microsurgical medial foraminotomy at L5-S1 which allowed visualisation of the nerve root and enucleation of the tumour. The technique maintains stability of the posterior elements and spinal movement, and is recommended for the removal of this type of tumour.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/s002640050044
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  • 4
    Electronic Resource
    Electronic Resource
    The cervical spine in the Klippel-Feil syndrome (1995)
    Springer
    International orthopaedics 19 (1995), S. 204-208 
    Details
    ISSN: 1432-5195
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Les auteurs rapportent 57 cas de syndrome de Klippel-Feil. D'après la classification de Feil, 5 des patients avaient une fusion de type I, 48 une fusion de type II et 4 une fusion de type de III. Il n'y avait pas de prévalence sexuelle notable et les symptômes étaient très variés. Les patients avec fusion C2–C3, présentaient souvent une dysplasie de l'apophyse ondotoïde avec instabilité cervicooccipitale. 21 patients ont eu des déficits neurologiques progressifs et 19 d'entre-eux ont du être opérés: 3 pour une arthrodèse postérieure occipito-C3, 2 pour une arthrodèse antérieure en un seul niveau, 1 par laminectomie et arthrodèse antérieure et 13 par laminoplasie. En plus de la pathologie dégénérative se développant au niveau du segment non fusionné, un canal cervical étroit au niveau du segment atteint de syndrome de Klippel-Feil représente un facteur de risque important de troubles neurologiques.
    Notes: Summary We report 57 cases of the Klippel-Feil syndrome. Five had type I congenital cervical fusion, 48 type II and 4 type III. The symptoms and signs varied considerably. Patients with C2–C3 fusion often had symptoms associated with odontoid dysplasia and occipito-cervical instability. Twenty-one had progressive neurological symptoms and 19 were operated on: 3 had occiput-C3 posterior arthrodeses, 2 a single level fusion, 1 a laminectomy and anterior arthrodesis, and 13 had laminoplasties. Degenerative changes at the unfused segment and a narrow bony canal are high risk factors in the development of neurological compromise.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00185222
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Saturated liquid densities and bubble-point pressures of the binary HFC 152a+HCFC 142b system (1991)
    Springer
    International journal of thermophysics 12 (1991), S. 1029-1038 
    Details
    ISSN: 1572-9567
    Keywords: bubble-point pressure ; HCFC 142b (CH3 CClF2) ; HFC 152a (CH3 CHF2) ; mixtures ; refrigerants ; saturated liquid density
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract Forty-eight sets of the saturated liquid densities and bubble-point pressures of the binary HFC 152a + HCFC 142b system were measured with a magnetic densimeter coupled with a variable-volume cell. The measurements obtained at four compositions, 20, 40, 60, and 80 wt%, of HFC 152a cover a range of temperatures from 280 to 400 K. The experimental uncertainties in temperature, pressure, density, and composition were estimated to be within ±15mK, ±20kPa, ±0.2%, and between −0.14 and ±0.01 wt% HFC 152a (−0.01 and + 0.14 wt% HCFC 142b), respectively. The purities of the samples were 99.9 wt% for HFC 152a and 99.8 wt% for HCFC 142b. A binary interaction parameter, k ij , in the Peng-Robinson equation of state was determined as a function of temperature for representing the bubble-point pressures. On the other hand, two constant binary-interaction parameters, k ij and l ij , were introduced into the mixing rule of the Hankinson-Brobst-Thomson equation for representing the saturated liquid densities.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00503517
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