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  • 1
    Electronic Resource
    Electronic Resource
    Springer
    Der Orthopäde 26 (1997), S. 489-497 
    ISSN: 1433-0431
    Keywords: Key words Biodegradation ; Polylactide ; Medial ankle fracture ; Distal radius fracture ; Radial head fracture ; Schlüsselwörter Biodegradation • Polylactid • Innenknöchelfraktur • Radiusfraktur • Radiusköpfchenfraktur
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Zusammenfassung Biodegradable Implantate bieten gegenüber metallischen Implantaten Vor- und Nachteile. Zahlreiche Anwendungsideen stellen sich dar. Darunter ist der Fixationsstift für gering belastete osteochondrale Fragmente am gründlichsten untersucht. Die primäre Festigkeit für Anwendungen am distalen Radius wurde vergleichbar zu herkömmlichen Implantaten wie der 1,8-mm-Kirschner-Draht gemessen. Eine prospektiv randomisierte Studie mit 183 Radiusköpfchenfrakturen zeigte gleichwertige Ergebnisse bei Metall und Polymer und insbesondre keine erhöhte Komplikationsrate für die Stifte aus Polylactid (Polypin®). Für diese Indikation und vergleichbare Lokalisationen ist eine Anwendung zu empfehlen. Die Gesamtbehandlungskosten können damit gesenkt werden, auch wenn das einzelne Implantat teurer ist. Hochfeste Polylactidschrauben haben in einer klinischen Langzeitstudie extrem lange Resorptionszeiten von 5–7 Jahren erbracht.
    Notes: Summary The application of biodegradable implants is combined with advantages and disadvan- tages. They offer a great deal of innovative ideas. Best evaluation has been done with pins for the fixation of low loaded osteochondral fractures. When using 2,7 mm Polypin® primary mechanical stabilility of distal radius fractures is comparable with the fixation by 1,8 mm K-wires. A prospective and randomised study with two years follow up, including 183 radial head fractures, showed no significant difference in results and complications in metal and polyactide implants. For this localisation and other comparable indications the implant can be recommended. Despite the more extensive degradable device overall costs can be reduced with the polymer implant. Orien- truded polyactide screws showed good clinical results, newetheless resorption was extremely late within 5 to 7 years.
    Type of Medium: Electronic Resource
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  • 2
    Electronic Resource
    Electronic Resource
    Springer
    Surgical and radiologic anatomy 20 (1999), S. 419-423 
    ISSN: 1279-8517
    Keywords: Lateral calcaneal artery ; Calcaneal fracture ; Flap ; Avascular necrosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Notes: Abstract An anatomic study of the lateral extraosseous and intraosseous arterial supply of the calcaneus and the lateral soft tissue was carried out on 10 fresh lower adult cadaver legs using different anatomic and radiologic procedures (plastination, modified Spalteholz clearing technique, digital subtraction and rotational angiography and computed tomographic angiography). Consistent patterns of extraosseous and intraosseous lateral calcaneal vascular anatomy were demonstrated. The lateral calcaneal artery is a branch of the anterior tibial artery which crosses over the calcaneal tuberosity and forms a large lateral arch with the lateral tarsal artery which is a branch of the dorsalis pedis artery. The intraosseous circulation is supplied laterally by the lateral calcanear artery, medially via the short branches of the lateral plantar artery. Comparing magnet resonance images after fresh calcaneal fractures the lateral calcanear artery may be interrupted by the impacted lateral bulge, by the conventional lateral surgical approach, or by applying a lateral osteosynthesis plate. This may cause avascular bone necrosis. Furthermore the lateral calcanear artery can clinically serve as a vascular pedicle for a local rotational skin flap to cover soft tissue defects of the heel.
    Type of Medium: Electronic Resource
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  • 3
    Electronic Resource
    Electronic Resource
    Springer
    Surgical and radiologic anatomy 20 (1998), S. 419-423 
    ISSN: 1279-8517
    Keywords: Lateral calcaneal artery ; Calcaneal fracture ; Flap ; Avascular necrosis
    Source: Springer Online Journal Archives 1860-2000
    Topics: Medicine
    Description / Table of Contents: Résumé L'étude anatomique de la vascularisaiton artérielle extra et intraosseuse du calcanéus et des parties molles a été faite sur 10 jambes fraîches de cadavres d'adultes. Différentes techniques anatomiques et radiologiques ont été utilisées : plastination, diaphanisation (technique de Spaltholtz modifiée), angiographie numérisée par soustraction, angiographie rotationnelle et angiographie par tomographie computérisée. Les aspects habituels de l'anatomie vasculaire de la région latérale du calcanéus ont été décrits : l'ACL est un rameau de l'artère tibiale postérieure ; elle surcroise la tubérosité calcanéenne et constitue une large arcade latérale avec l'artère tarsienne latérale, branche de l'artère dorsale du pied. La moitié de la circulation intraosseuse passe par l'ACL, médialement par des rameaux courts de l'artère plantaire latérale. Lorsqu'on examine les images obtenues en IRM lors de fractures récentes du calcanéus, on constate que l'ACL risque d'être lésée par l'élargissement latéral du calcanéus écrasé. Elle peut l'être aussi lors de l'abord latéral classique de l'os ou lors de l'application d'une plaque d'ostéosynthèse. Le risque en est la nécrose ischémique de l'os. Enfin, l'ACL peut constituer un pédicule vasculaire intéressant pour un lambeau local de rotation, lors de la couverture des pertes de substances cutanées du talon.
    Notes: Summary An anatomic study of the lateral extraosseous and intraosseous arterial supply of the calcaneus and the lateral soft tissue was carried out on 10 fresh lower adult cadaver legs using different anatomic and radiologic procedures (plastination, modified Spalteholz clearing technique, digital subtraction and rotational angiography and computed tomographic angiography). Consistent patterns of extraosseous and intraosseous lateral calcaneal vascular anatomy were demonstrated. The lateral calcaneal artery is a branch of the anterior tibial artery which crosses over the calcaneal tuberosity and forms a large lateral arch with the lateral tarsal artery which is a branch of the dorsalis pedis artery. The intraosseous circulation is supplied laterally by the lateral calcanear artery, medially via the short branches of the lateral plantar artery. Comparing magnet resonance images after fresh calcaneal fractures the lateral calcanear artery may be interrupted by the impacted lateral bulge, by the conventional lateral surgical approach, or by applying a lateral osteosynthesis plate. This may cause avascular bone necrosis. Furthermore the lateral calcanear artery can clinically serve as a vascular pedicle for a local rotational skin flap to cover soft tissue defects of the heel.
    Type of Medium: Electronic Resource
    Library Location Call Number Volume/Issue/Year Availability
    BibTip Others were also interested in ...
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