Biomechanical comparison of Lisfranc ligament reconstruction with suture endobutton and plantaris tendon
XU Shi-ming，CAI Hui，DENG Zi-wen，GUO Chun-li，SUN Da-wei，ZHUO Ri-bo, HUANG Dong
Chinese Journal of Clinical Anatomy ›› 2018, Vol. 36 ›› Issue (2) : 211-215.
Biomechanical comparison of Lisfranc ligament reconstruction with suture endobutton and plantaris tendon
Objective Biomechanical comparison of Lisfranc ligament reconstruction with suture endobutton and plantaris tendon was conducted to evaluate the effect of the two methods on restoring the stability of Lisfranc joint and to provide a theoretical basis for clinical treatment of Lisfranc's injury. Methods Ten fresh adult cadaveric calves were selected and the complete Lisfranc ligament model, the injury model, the suture endobutton and plantar tendon reconstruction model were prepared. The axial or abduction load was recorded respectively. The average displacement of the basement of the medial cuneiform (C1) to the second metatarsal (M2) changes was recorded. Results The average displacement of C1~M2 under axial load and abduction load was (0.70±0.05) mm and (1.21±0.10) mm in the intact model, (1.59±0.07) mm and (3.73±0.11) mm in the damage model, (0.84±0.04) mm and (1.29±0.06) mm in the reconstruction model of suture endobutton, (1.01±0.05) mm and (1.34±0.05) mm in the plantar tendon reconstruction model, respectively. The displacement of the intact model and the reconstruction model C1~M2 under axial or abduction load was significantly less than that of the injury model (P<0.05); The displacement of the reconstruction model was slightly larger than that of the intact model with no significant difference (P> 0.05). There was no significant difference in the displacement between the suture endobutton and plantar tendon reconstruction model (P>0.05); The C1~M2 displacement changes under the abduction load was more than those under the axial load in any model. Conclusions (1)The biomechanical strength provided by suture endobutton and plantar tendon reconstruction is similar in the regard of the restoration of Lisfranc joint stability. (2)Compared to changes in displacement under the axial load, the difference of experimental results under the abduction load is more obvious. Hence, it is recommended to use the abduction load Lisfranc joint mechanics test.
Suture endobutton / Plantaris tendon / Lisfranc ligament / Biomechanics
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