کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4061194 1604034 2011 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Five Cases of Failure of the Tibial Polyethylene Insert Locking Mechanism in One Design of Constrained Knee Arthroplasty
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی ارتوپدی، پزشکی ورزشی و توانبخشی
پیش نمایش صفحه اول مقاله
Five Cases of Failure of the Tibial Polyethylene Insert Locking Mechanism in One Design of Constrained Knee Arthroplasty
چکیده انگلیسی
We describe 5 cases of failure of the locking mechanism of the polyethylene insert and tibial base-plate in one design of constrained condylar knee prosthesis due to disengagement of the locking screw. Loosening of the screw is believed to occur because of a counterclockwise torque created by the axial rotation of the femur on the tibia that occurs as the knee extends during gait. This torque is transmitted via the highly rotationally constrained femoral housing and tibial post to the locking screw. These failures suggest that an alternative locking mechanism should be considered for this prosthesis.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: The Journal of Arthroplasty - Volume 26, Issue 6, September 2011, Pages 976.e21-976.e24
نویسندگان
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