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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    International orthopaedics 9 (1985), S. 105-110 
    ISSN: 1432-5195
    Keywords: Cerebral palsy ; Hip dysplasia ; Prognosis ; Treatment
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé L'évolution de la dysplasie de hanche chez l'infirme moteur cérébral est étudiée à partir de 292 cas. Cette étude permet de préciser la vitesse de migration de la hanche, ce qui autorise à formuler très tôt dans l'évolution dysplasique un pronostic anatomique. L'analyse des signes radiologiques précoces de la dysplasie en fonction de l'autonomie locomotrice de l'enfant dégage un remarquable parallélisme anatomofonctionnel. Ainsi, l'analyse des premières images radiographiques permet tout à la fois une prévision anatomique et une prévision fonctionnelle, autorisant un traitement précoce et adapté aux futures conditions de vie de l'enfant. Ce traitement doit être étiologique, basé sur les libérations musculo-tendineuses. Il est surtout efficace sur le recentrage coxofémoral et cela d'autant plus qu'il est réalisé plus précocément. Ces ténotomies sont au contraire peu efficaces sur la dysplasie osseuse, notamment sur l'obliquité cotyloödienne. Or, celle-ci débute vers 30 mois. Mieux vaut donc prévenir sa survenue par des ténotomies précoces et toujours bien tolérées plutôt que de la corriger par ostéotomie pelvienne, moins bien supportée par ces enfants fragiles.
    Notes: Summary The development of dysplasia of the hip in cerebral palsy has been studied in 292 hips in children. The rate of migration of the hip has been defined, and gave a very early indication of the prognosis for the dysplasia. A close relationship was also found between the early radiographic changes and the functional locomotor anatomy. By reviewing the initial radiographs the need for early treatment and its adaptation to the future locomotor potential of the child can be assessed. Treatment is usually by musculotendinous releases and is especially effective in early recentring of the femoral head, but this method is ineffective in correcting bone dysplasia, particularly acetabular obliquity, which starts at around the age of 30 months. It is preferable to anticipate its development by early tenotomies which are much better tolerated than pelvic osteotomy in spastic children.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Analog integrated circuits and signal processing 8 (1995), S. 219-231 
    ISSN: 1573-1979
    Keywords: latch-up ; smart power ; CMOS technology ; design methodology
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract To answer to the need of a cost effective smart power technology, an original design methodology that permits implementing latch-up free smart power circuits on a very simple CMOS/DMOS technology is proposed. The basic concept used to this purpose is letting float the wells of the MOS transistors most susceptible to initiate latch-up. The efficiency of the design methodology is experimentally shown.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Analog integrated circuits and signal processing 8 (1995), S. 233-246 
    ISSN: 1573-1979
    Keywords: smart power ; CMOS technology ; circuit design ; driving and protection functions
    Source: Springer Online Journal Archives 1860-2000
    Topics: Electrical Engineering, Measurement and Control Technology
    Notes: Abstract This paper intends to show that even with a CMOS technology main driving and protection functions of a power VDMOS can be made performant. Original circuits taking advantage of the availibility of the parasitic vertical bipolar transistor are presented and experimentally evaluated. A current mode approach is proposed to improve the accuracy of the current sensing function aimed at performing overcurrent, short-circuit and open-load detection.
    Type of Medium: Electronic Resource
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