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  • 1985-1989  (5)
  • 1
    Electronic Resource
    Electronic Resource
    A study of the synovial and ligamentous structure of the anterior cruciate ligament (1987)
    Springer
    International orthopaedics 11 (1987), S. 117-124 
    Details
    ISSN: 1432-5195
    Keywords: Anterior cruciate ligament ; Synovium ; Structure
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé Etude microscopique de 16 ligaments croisés antérieurs (L. C. A.) prélevés post-mortem en conservant la continuité topographique de leur structure synoviale et ligamentaire. Le revêtement synovial du L. C. A. se compose de trois types différents de tissu: fibreux, aréolaire et aréolo-adipeux. La synoviale elle-même est constituée de deux couches dont la seconde partie, la sous-synoviale, se différencie en une partie périphérique, fibreuse et dense et une partie faite de tissu conjonctif lâche, porteur des structures vasculaires et nerveuses. Le tissu collagène du L. C. A., le vrai tissu fonctionnel, contient environ 1500 fascicules d'un diamètre moyen de 250 μm. Ces fascicules sont constitués de faisceaux de fibres collagènes, de fibrocytes et de protéoglycans. Les structures synoviales et ligamentaires sont reliées entre elles par l'intermédiaire de la couche sous-synoviale qui irradie dans le tissu ligamentaire dont elle engaîne les fascicules. Ainsi est établie une connexion biologique entre ces deux structures. Les conséquences de cette étude sur la réparation chirurgicale des ruptures récentes du L. C. A. sont discutées.
    Notes: Summary The synovial and ligamentous structure of 16 human anterior cruciate ligaments (ACL), removed at autopsy, were examined by light microscopy with special regard to their topographical relationships. The soft tissue support of the ACL consists of fibrous, areolar and areolo-adipose synovial tissue. The subsynovial layer comprises a tight fibrous peripheral part and an element of loose connective tissue containing some tight connective tissue strands, vessels and nerves. The collagenous ligamentous part of the ACL is the proper functional tissue and contains approximately 1500 fascicles measuring an average of 250 μm in diameter. These fascicles are composed of bundles of collagen fibres, fibrocytes and deposits of proteoglycans. The synovial and ligamentous structures are attached by the second part of the subsynovial layer, which radiates into the ligamentous tissue and envelops the fascicles like a sheath. By this means the biological connection between these two structures is guaranteed. The relevance of these findings to operative reconstruction of recent ligamentous injuries is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00266696
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Examinations of the pathology of the rotator cuff (1987)
    Springer
    Archives of orthopaedic and trauma surgery 106 (1987), S. 301-308 
    Details
    ISSN: 1434-3916
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Zur Überprüfung der in der Literatur geäußerten unterschiedlichen Auffassungen zur Pathogenese und Häufigkeit der Tendinopathia calcarea und der Rotatorenmanschettenruptur wurden eigene autoptische Untersuchungen an 195 Schultergelenken durchgeführt. Es zeigte sich eine Rupturhäufigkeit von 11%. Intratendinöse Verkalkungen zeigten sich röntgenologisch in 22% der Fälle. Das gleichzeitige Vorliegen von intratendinbsen Verkalkungen und Rotatorenmanschettenrupturen konnte in 13 von 22 Fällen mit Vorliegen einer Rotatorenmanschettenruptur nachgewiesen werden. Aufgrund der Ergebnisse unserer Untersuchung ist von einer identischen Pathogenese der Tendinopathia calcarea und der Rotatorenmanschettenruptur auszugehen.
    Notes: Summary We performed autopsies on 195 shoulder joints in order to check the differing opinions as to the pathogenesis and incidence of tendinopathia calcarea and rupture of the rotator cuff that have been expressed in literature. There was a rupture rate of 11%. Intratendinous calcific deposits could be observed by radiology in 22% of the cases. The simultaneous presence of intratendinous calcification and rotator cuff rupture could be proved in 13 of 22 cases with a rupture of the rotator,cuff. On the basis of our results we conclude that tendinopathia calcarea and rupture of the rotator cuff have an identical pathogenesis.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00454338
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    The importance of functional magnetic resonance imaging (MRI) in the planning of stabilizing operations on the cervical spine in rheumatoid patients (1989)
    Springer
    Archives of orthopaedic and trauma surgery 109 (1989), S. 30-33 
    Details
    ISSN: 1434-3916
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Chronic inflammatory diseases, such as chronic polyarthritis or spondylarthritis ankylopoietica, can occasionally lead to vertebral instabilities of the occipitoatlantal or atlantoaxial level, requiring some form of stabilizing operation. By means of functional magnetic resonance imaging, i.e., with the cervical spine at its maximal range of flexion and extension, performed on 11 patients suffering from an instability at the above level, it was possible to demonstrate not only the extent of synovial tissue, but also how this sometimes excessive soft-tissue growth hinders an adequate reduction of the subluxated vertebrae. The importance of this investigation lies in the fact that the necessary operation can be planned appropriately. As such, three patients required a decompressing operation entailing resection of the posterior arch of the atlas, widening of the foramen magnum, or both.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00441906
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    Micromotions in the primary fixation of cementless femoral stem prostheses (1989)
    Springer
    Archives of orthopaedic and trauma surgery 108 (1989), S. 300-307 
    Details
    ISSN: 1434-3916
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary Thirty cementless femoral stems of six different types of hip endoprostheses were impanted in femurs taken at autopsy and underwent static loading and afterwards dynamic loading of 50000 cycles to simulate walking during the early months after implantation. After that, the static load tests were performed again. During both static load series a certain amount of micromotion between stem and implantation bed occurred in the frontal and sagittal planes and also during rotation. The six prostheses exhibited clearly differing results. The influence of dynamic load on the extent of micromotion was small.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00932320
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    Paper (German National Licenses)
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  • 5
    Electronic Resource
    Electronic Resource
    Special problems of cementless fixation of total hip-joint endoprostheses with reference to the PM type (1988)
    Springer
    Archives of orthopaedic and trauma surgery 107 (1988), S. 158-171 
    Details
    ISSN: 1434-3916
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Summary The success of cement-free hip endoprosthetics is largely dependent on precise surgical techniques and primary stability of the anchorage, in which favorable biomechanical conditions as well as the quality of the stabilizing bone are of considerable importance. Information gathered from more than 1500 cementless hip-joint endoprosthesis implantations is presented with biomechanical solutions and indications regarding operating techniques, and a correlation between clinical symptoms and radiological signs of complications is discussed. In close coordination with material-specific factors, design and surface characteristics are decisive in the function and quality of anchorage of the endoprosthetic replacement. In the case of the PM total hip endoprosthesis, these widely variable values were governed strictly by biomechanical considerations, with particular reference to the resulting bone reactions. Results so far, including those relating to stable integration of the implant, must be regarded as absolutely positive and confirm the design characteristics on which this model was based. Avoiding the disadvantages of bone cement, cementless hip-joint replacement, particularly in operations for the exchange of cemented prostheses after loosening, can be regarded as a step forward in hip-joint surgery.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00451596
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    Paper (German National Licenses)
    Fulltext
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