Mechanical properties of newly developed loop ligament for connection between the endobutton and hamstring tendons: Comparison with Ethibond sutures and Endobutton tape
✍ Scribed by Uchio, Yuji ;Ochi, Mitsuo ;Sumen, Yoshio ;Adachi, Nobuo ;Kawasaki, Kenzo ;Iwasa, Junji ;Katsube, Kenichi
- Publisher
- John Wiley and Sons
- Year
- 2002
- Tongue
- English
- Weight
- 731 KB
- Volume
- 63
- Category
- Article
- ISSN
- 0021-9304
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✦ Synopsis
Abstract
A new artificial loop ligament (LL) without mechanical weak points, such as a knot, has been developed to connect the EndoButton and hamstring tendons for anterior or posterior cruciate ligament (CL) reconstruction. This study assessed the mechanical properties of the LL and sutures (No. 5 Ethibond thread, EndoButton tape) and those of the different CL constructs with these materials and fixation devices commonly used in CL reconstruction. The LL had a significantly higher ultimate tensile load (UTL) and stiffness value (p < 0.001) than No. 5 Ethibond thread or EndoButton tape in static and fatigue tests (50–500 N, 1.08 million cycles). The LL‐tendons‐Leeds‐Keio artificial ligament‐staple construct complex also had significantly higher UTL and stiffness value than the Ethibond loops or EndoButton tape loop‐tendons‐Ethibond sutures‐postscrew‐fixed construct complex. Furthermore, the LL construct complex elongated the least after cyclic loading (50–150 N, 90,000 cycles). These findings suggested that using the LL construct complex might avoid a bungee cord effect and elongation before biological healing between the construct and bony socket. The LL construct complex could be a safe substitute for use during the postoperative period. © 2002 John Wiley & Sons, Inc. J Biomed Mater Res (Appl Biomater) 63: 173–181, 2002; DOI 10.002/jbm.10125