کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
10433818 | 910377 | 2005 | 8 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Structural properties of the medial collateral ligament complex of the human knee
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
سایر رشته های مهندسی
مهندسی پزشکی
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چکیده انگلیسی
The anatomy of the medial collateral ligament (MCL) complex consists of three identifiable passive restraining structures: the longitudinal fibres of the superficial medial collateral ligament (sMCL), the deep medial collateral ligament (dMCL), and the posteromedial capsule (PMC). The purpose of this study was to measure and compare the structural properties of these three individual structures. Eight human cadaveric knees (age 72-89 years, mean=77 years, S.D. 5.3) were harvested and bone-ligament-bone tensile testing specimens prepared. After preconditioning, the specimens were extended to failure at 1000Â mm/min in an Instron tensile testing machine. Ligament bundles failed either mid-substance or at their bony attachments. The ligament bundles had maximum loads of 534Â N (sMCL), 194Â N (dMCL), 425Â N (PMC) and failed at 10.2, 7.1, and 12.0Â mm mean extension, respectively. The maximum load and linear stiffness of the sMCL were significantly higher than those of the dMCL but not the PMC. The maximum load of the PMC was significantly higher than that of the dMCL; the linear stiffness of the PMC was higher than that of the dMCL but this did not reach statistical significance. The dMCL failed at a significantly lower extension than the other structures. The sMCL bundles that failed at their bony attachment were remounted using a freezing clamp fixture and again extended to failure, resulting in mid-substance failure at 884Â N (74% higher). This study has shown that the PMC of the knee has comparable structural properties to the long superficial MCL and the short, deep MCL. In summary, the structural properties of the different component structures of the medial ligament complex indicate possible functional significance.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Biomechanics - Volume 38, Issue 5, May 2005, Pages 1067-1074
Journal: Journal of Biomechanics - Volume 38, Issue 5, May 2005, Pages 1067-1074
نویسندگان
James R. Robinson, Anthony MJ. Bull, Andrew A. Amis,