کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4050068 1603748 2015 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Extra-articular step osteotomy of the olecranon: A biomechanical assessment
موضوعات مرتبط
علوم پزشکی و سلامت پزشکی و دندانپزشکی ارتوپدی، پزشکی ورزشی و توانبخشی
پیش نمایش صفحه اول مقاله
Extra-articular step osteotomy of the olecranon: A biomechanical assessment
چکیده انگلیسی


• Biomechanical assessment of different olecranon osteotomies
• Extra-articular osteotomies showed a significantly higher load to failure.
• This biomechanical advantage was further enhanced by a step-cut modification.

BackgroundTrans-olecranon chevron osteotomies (COs) remain the gold standard surgical approach to type C fractures of the distal humerus. This technique is associated with a high complication rate and development of an extra-articular olecranon osteotomy may be advantageous. The aim of this study was to compare the load to failure of COs with extra-articular oblique osteotomies (OOs) as well as modified, extra-articular step osteotomies (SOs).MethodsThese three osteotomies and their subsequent fixation utilizing a standardized tension band wiring technique were tested in 42 composite analog ulnae models at 20° and 70° of flexion. Triceps loading was simulated with a servo hydraulic testing machine. All specimens were isometrically loaded until failure. Kinematic and force data, as well as interfragmentary motion were recorded.ResultsAt 70°, CO failed at a mean load of 963 N (SD 104 N), the OO at 1512 N (SD 208 N) and the SO at 1484 N (SD 153 N), (P < 0.001). At 20°, CO failed at a mean load of 707 N (SD 104 N) and OO at 1009 N (SD 85 N) (P = 0.006). The highest load to failure was observed for the SO, which was 1277 N (SD 172 N). The load to failure of the SO was significantly higher than the CO as well as the OO.ConclusionExtra-articular osteotomies showed a significantly higher load to failure in comparison to traditional CO. At near full extension (20° of flexion), this biomechanical advantage was further enhanced by a step-cut modification of the extra-articular oblique osteotomy.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Clinical Biomechanics - Volume 30, Issue 10, December 2015, Pages 1043–1048
نویسندگان
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