TY - JOUR
T1 - Biomechanical analysis of endobutton versus screw fixation after Lisfranc ligament complex sectioning
AU - Marsland, Daniel
AU - Belkoff, Stephen M.
AU - Solan, Matthew C.
N1 - Funding Information:
We would like to thank Arthrex, Inc. for the provision of implant materials and a grant toward laboratory and specimen costs. We would like to acknowledge Demetries Boston for his invaluable assistance with specimen preparation and testing and also Elaine P. Henze, BJ, ELS and Jenni L. Weems, MS, for their editorial assistance.
PY - 2013/12
Y1 - 2013/12
N2 - Background: Our goal was to compare diastasis after endobutton and screw fixation after Lisfranc ligament complex sectioning. Methods: Twenty-four (12 pairs) fresh-frozen cadaveric feet were assigned to endobutton or screw fixation and loaded to 343. N. Displacement (first-second metatarsal bases) was measured in intact feet and after ligament sectioning (Lisfranc, medial-intermediate cuneiform ligaments), fixation, and 10,000 cycles. Results: The mean change in diastasis for endobutton and screw fixation under initial loading was 1.0. mm (95% CI, 0.2-1.9. mm) and 0.0. mm (95% CI, -0.4 to 0.4. mm), respectively ( p= 0.017). After cyclic loading, diastasis decreased (mean, -0.7. mm, 95% CI, -1.2 to -0.1. mm) in the endobutton group but was unchanged in the screw group ( p= 0.035). Conclusions: Diastasis after endobutton fixation was significantly greater than after screw fixation under initial loading but did not increase further after cyclic loading.
AB - Background: Our goal was to compare diastasis after endobutton and screw fixation after Lisfranc ligament complex sectioning. Methods: Twenty-four (12 pairs) fresh-frozen cadaveric feet were assigned to endobutton or screw fixation and loaded to 343. N. Displacement (first-second metatarsal bases) was measured in intact feet and after ligament sectioning (Lisfranc, medial-intermediate cuneiform ligaments), fixation, and 10,000 cycles. Results: The mean change in diastasis for endobutton and screw fixation under initial loading was 1.0. mm (95% CI, 0.2-1.9. mm) and 0.0. mm (95% CI, -0.4 to 0.4. mm), respectively ( p= 0.017). After cyclic loading, diastasis decreased (mean, -0.7. mm, 95% CI, -1.2 to -0.1. mm) in the endobutton group but was unchanged in the screw group ( p= 0.035). Conclusions: Diastasis after endobutton fixation was significantly greater than after screw fixation under initial loading but did not increase further after cyclic loading.
KW - Biomechanical
KW - Endobutton
KW - Lisfranc ligament rupture
KW - Screw
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U2 - 10.1016/j.fas.2013.06.009
DO - 10.1016/j.fas.2013.06.009
M3 - Article
C2 - 24095236
AN - SCOPUS:84884976897
SN - 1268-7731
VL - 19
SP - 267
EP - 272
JO - Foot and Ankle Surgery
JF - Foot and Ankle Surgery
IS - 4
ER -