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.
- Lisfranc ligament rupture
ASJC Scopus subject areas
- Orthopedics and Sports Medicine