Tuyển tập các báo cáo nghiên cứu khoa học ngành y học tạp chí Medical Sciences dành cho các bạn sinh viên ngành y tham khảo đề tài: Mechanical behaviour of standardized, endoskeleton-including hip spacers implanted into composite femurs. | Int. J. Med. Sci. 2009 6 280 International Journal of Medical Sciences 2009 6 5 280-286 Ivyspring International Publisher. All rights reserved Research Paper Mechanical behaviour of standardized endoskeleton-including hip spacers implanted into composite femurs T. Thielen1 H S. Maas1 A. Zuerbes1 D. Waldmann1 K. Anagnostakos2 J. Kelm2 3 1. Research Unit in Engineering Sciences University of Luxembourg Luxembourg 2. Klinik fur Orthopadie und Orthopadische Chirurgie Universitatsklinikum des Saarlandes Homburg Saar Germany 3. Chirurgisch-Orthopadisches Zentrum Illingen Saar Germany H Correspondence to . MSc Thomas Thielen Université du Luxembourg Faculte des Sciences de la Technique et de la Communication 6 rue Richard Coudenhove-Kalergi L-1359 Luxembourg-Kirchberg. Phone 352 46 66 44 5422 Fax 352 46 66 44 5620 Received Accepted Published Abstract Two-stage reconstruction using an antibiotic loaded cement spacer is the preferred treatment method of late hip joint infections. Hip spacers maintain stability of the joint and length of the limb during treatment period. However as the material strength of bone cement PMMA is limited spacer fractures led to serious complications in the past. This study investigated the load capacity of custom made hip spacers developed at the Klinik fur Or-thopădie und Orthopădische Chirurgie Universitătsklinikum des Saarlandes Homburg Saar Germany and implanted into composite femurs. In a quasi-static test non-reinforced spacers tolerated hip joint loads of about 3000 N whereas reinforced spacers with tita-nium-grade-two endoskeletons doubled this load up to 6000 N. Even for cyclic loading endoskeleton-including hip spacers tolerated loads of 4500 N with 500 000 load cycles. Thus an endoskeleton-including spacer should provide a mobile and functional joint through the treatment course. A generated FE-model was used to determine the fracture stresses and allows for further .
