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TECHNICAL PAPERS: Soft Tissue

Determination of Optimal Graft Lengths for Posterior Cruciate Ligament Reconstruction—A Theoretical Analysis

[+] Author and Article Information
Guoan Li

Orthopaedic Biomechanics Laboratory MGH/BIDMC and Harvard Medical School, Boston, MA 02214

Louis DeFrate, Jeremy Suggs

Department of Mechanical Engineering, Massachusetts Institute of Technology, Cambridge, MA 02139

Thomas Gill

Orthopaedic Biomechanics Laboratory MGH/BIDMC and Harvard Medical School, Boston, MA 02215

J Biomech Eng 125(2), 295-299 (Apr 09, 2003) (5 pages) doi:10.1115/1.1554409 History: Received May 01, 2002; Revised November 01, 2002; Online April 09, 2003
Copyright © 2003 by ASME
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References

Figures

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Force-elongation curves for a BPTB graft measured experimentally and calculated using Eq. (3).
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Optimal ligament lengths of PCL reconstruction at different loading levels; (a) BPTB and (b) Achilles tendon grafts. Minimal normalized energy difference indicated an optimal graft length. Note that the optimal graft lengths of each graft at different loading levels are similar.
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Force-elongation of (a) the BPTB grafts and (b) Achilles tendon grafts. The effect of initial graft tension on force-elongation behavior of the grafts was illustrated.
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Force-elongation of the PCL and Achilles tendon graft of three lengths: (a) the optimal length and the lengths with ±10% variation from the optimal length; (b) the length simulating mid-tunnel fixation and the length simulating tibial inlay fixation.
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Force-elongation of the PCL and BPTB graft with four different lengths: the optimal graft length, the length simulating mid-tunnel fixation, the length simulating inlay fixation and a length 10% less than the optimal value.

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