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| Biomechanics Analysis Of Tibial Plateau Tip Point Of Knee Anterior Cruciate Ligament |
| Department of Joint Surgery, Orthopedic Center, Hunan Provincial People's Hospital, Changsha, Hunan 410005, China |
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Abstract 【Objective】 To analyze the biomechanical properties in different movement planes of tibial plateau tip point of anteromedial and posterolateral bundle of anterior cruciate ligament (ACL) and explore the optimal tip point during tendon reconstruction. 【Methods】 Retrospective analyses were conducted for knee magnetic resonance imaging (MRI) scans of 253 cases scheduled for exploration of knee arthroscopy from June 2010 to October 2012. And the parameters of length, thickness, width of anteromedial and posterolateral bundle of ACL and the length between posterior and anterior of tibial tip point were measured. Knees and ACLs were harvested voluntarily from 10 fresh cadaveric donors. And anatomical characteristics of different parts of ACL were analyzed. The pulloff test was performed, loadextension curve plotted and maximum strain and maximum stress calculated. 【Results】 MRI showed that ACL was divided by tibial tip point into posterior (2/3 of ACL) (22.916±2.963 mm) and anterior(1/3 ACL) (13.096±1.759 mm) parts. Biomechanical test showed maximum stress and maximum strain of anteromedial bundle, including anterior tibial tip point, were 38.843±4.152 N/mm2 and 47.895±3.141% and posterolateral bundle 30.260±2.242 N/mm2 and 40.705±2.535% respectively. And maximum stress and maximum strain of anteromedial bundle were larger than those of posterolateral bundle (P<0.05). 【Conclusion】 The anteromedial bundle of ACL, including anterior tibial tip point, is a major stress point in different movement planes. And anterior ACL tibial tip point may be an optimal site for ACL reconstruction.
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Received: 07 May 2015
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| [1] |
. [J]. JOURNAL OF CLINICAL RESEARCH, 2015, 32(1): 170-172. |
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2015, Vol. 32 
