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Category: Midfoot/Forefoot, Sports, Trauma Introduction/Purpose: Open reduction and internal fixation (ORIF) with transarticular screws or bridge plating is the standard of care for unstable Lisfranc injuries. There are no studies comparing the clinical outcomes of fixation with transarticular screws or bridge plates in young, athletic patients who sustained low-energy injuries. Methods: All low-energy Lisfranc injuries that underwent ORIF between 2010 and 2015 were reviewed. Injuries were classified as low-energy if the occurred during athletic activity, ground level twisting, or a fall from less than three feet (typically stairs or curbs). Tarsometatarsal (TMT) joint fixation with transarticular screws or bridge plating was documented. Transarticular screws were typically removed between four and six months postoperatively. Injury characteristics, complication rates, pain scores, and Foot and Ankle Ability Measure (FAAM) scores were compared. All continuous variables were compared with a two-tailed Student t-test. All categorical variables were compared using the Chi Squared test. Results: Of the fifteen patients identified, nine were fixed with transarticular screws and six with bridge plates. Average patient age was 27 years old. 12 of 15 were primarily ligamentous injuries. Implant removal was performed in the entire transarticular screw group and three out of six in the bridge plate group (p=0.018). Secondary arthrodesis for arthritis was recommended in two of the transarticular screw group and none of the bridge plate group (p=0.21). Mean FAAM scores were significantly higher in all subscales (ADL 96.2 v 76.7 p=.035, ADL SANE 92.5 v 72.6 p=.055, Sport 89.5 v 62.5 p=.027, Sport SANE 90 v 58.7 p=.024) in the bridge plate group at an average of 43 months follow up. Conclusion: In this study, ORIF with bridge plate fixation of the TMT joints had a lower rate of HWR and higher medium term FAAM scores than fixation with transarticular screws. A statistically significant difference in rates of secondary arthritis could not be established in this small cohort. Prospective studies are necessary to confirm these findings.

Bridge Plate Fixation Results in Better Functional Outcomes Than Transarticular Screw Fixation for Low-Energy Lisfranc Injuries