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Verfasst von:Tsitlakidis, Stefanos [VerfasserIn]   i
 Westhauser, Fabian [VerfasserIn]   i
 Jäger, Sebastian [VerfasserIn]   i
 Klotz, Matthias C. M. [VerfasserIn]   i
Titel:Periprosthetic fracture morphology of a femoral neck prosthesis
Titelzusatz:an in vitro study
Verf.angabe:Stefanos Tsitlakidis, Leo Vot, Fabian Westhauser, Sebastian Jaeger, Matthias C. Klotz
E-Jahr:2019
Jahr:September 23, 2019
Umfang:8 S.
Fussnoten:Gesehen am 12.11.2019
Titel Quelle:Enthalten in: Institution of Mechanical EngineersProceedings of the Institution of Mechanical Engineers / H
Ort Quelle:London : Sage Publ., 1989
Jahr Quelle:2019
Band/Heft Quelle:233(2019), 11, Seite 1175-1182
ISSN Quelle:2041-3033
Abstract:Femoral neck prostheses have been developed for the treatment of osteoarthritis in young and active patients. The concept combines a bone-conserving and minimal invasive technique with proximal load transferring by metaphyseal anchoring, which results in a more physiological loading pattern. However, little is known about the morphology of periprosthetic fractures. Thus, the aim of this study was to describe fracture patterns and to determine patient-specific factors favoring periprosthetic fracture. This study was performed as a biomechanical experimental study using 10 fresh frozen femora and 10 Silent-Hip femoral neck implants (DePuy International Ltd., Leeds, UK). In order to simulate physiological loading, a static muscle reconstruction (abductor muscles and iliotibial band) and a dynamic simulation of the gait cycle were applied. During biomechanical testing (50% and 100% of normal weight-bearing), three periprosthetic fractures with two different morphologies occurred. The first pattern corresponds to an abrupt breakaway. The second type was of spiral configuration extending to the diaphyseal region and emerging from an initial fissure. Specimen-specific factors favoring periprosthetic fracture were body mass index and varus angle of the implant. Periprosthetic fractures may extend to the subtrochanteric/diaphyseal region and may be of spiral configuration. According to the finding of this study, body mass index and varus/valgus position of the implant are important factors influencing the risk of periprosthetic fractures. Furthermore, partial weight-bearing as part of the postoperative regimen may be favorable.
DOI:doi:10.1177/0954411919877286
URL:Bitte beachten Sie: Dies ist ein Bibliographieeintrag. Ein Volltextzugriff für Mitglieder der Universität besteht hier nur, falls für die entsprechende Zeitschrift/den entsprechenden Sammelband ein Abonnement besteht oder es sich um einen OpenAccess-Titel handelt.

Volltext: https://doi.org/10.1177/0954411919877286
 DOI: https://doi.org/10.1177/0954411919877286
Datenträger:Online-Ressource
Sprache:eng
K10plus-PPN:1681667363
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