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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Grahic Jump Location
Force-elongation curves for a BPTB graft measured experimentally and calculated using Eq. (3).
Grahic Jump Location
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.
Grahic Jump Location
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.
Grahic Jump Location
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.
Grahic Jump Location
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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