کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
6083201 1205988 2015 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The biomechanical effect of bone quality and fracture topography on locking plate fixation in periprosthetic femoral fractures
ترجمه فارسی عنوان
اثر بیومکانیک کیفیت استخوان و توپوگرافی شکستگی بر روی تثبیت صفحات قفسه ای در شکستگی های فیبری پری پروستات
کلمات کلیدی
شکستگی پری پروستات فمورال، کیفیت استخوانی، زاویه شکست سطح شکستگی، توپوگرافی شکستگی، تجزیه و تحلیل عنصر محدود،
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی طب اورژانس
چکیده انگلیسی
Optimal management of periprosthetic femoral fractures (PFF) around a well fixed prosthesis (Vancouver B1) remains controversial as adequate fixation needs to be achieved without compromising the stability of the prosthesis. The aim of this study was to highlight the effect of bone quality i.e. canal thickness ratio (CTR), and fracture topography i.e. fracture angle and its position in relation to the stem, on the biomechanics of a locking plate for a Vancouver B1 fracture. A previously corroborated simplified finite element model of a femur with a cemented total hip replacement stem was used in this study. Canal thickness ratio (CTR) and fracture topography were altered in several models and the effect of these variations on the von Mises stress on the locking plate as well as the fracture displacement was studied. Increasing the CTR led to reduction of the von Mises stress on the locking plate as well as the fracture movement. In respect to the fracture angle with the medial cortex, it was shown that acute angles resulted in lower von Mises stress on the plate as opposed to obtuse angles. Furthermore, acute fracture angles resulted in lower fracture displacement compared to the other fractures considered here. Fractures around the tip of the stem had the same biomechanical effect on the locking plate. However, fractures more distal to the stem led to subsequent increase of stress, strain, and fracture displacement. Results highlight that in good bone quality and acute fracture angles, single locking plate fixation is perhaps an appropriate management method. On the contrary, for poor bone quality and obtuse fracture angles alternative management methods might be required as the fixation might be under higher risk of failure. Clinical studies for the management of PFF are required to further support our findings.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Injury - Volume 46, Issue 2, February 2015, Pages 213-217
نویسندگان
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