Factors Affecting Patient Reported Outcomes after Surgical Fixation of Lisfranc Injury

CATEGORY: Midfoot/Forefoot; Trauma INTRODUCTION/PURPOSE: The Lisfranc joint accounts for a small percentage of all fractures and is typically caused by trauma, high falls, or from athletic injuries. The treatment can be divided into operative and non-operative management based on the extent of the injury. Currently, as to the best of our knowledge, there is no literature that assesses patient reported outcomes after surgical intervention for Lisfranc injuries. This study provides an overview of the relationship between PROMIS scores and overall outcomes of patients who underwent surgical management for Lisfranc injury. METHODS: A retrospective analysis was conducted for patients that underwent Lisfranc surgical repair at our facility from 2010- 2020. Using the electronic medical record (EMR), basic patient demographics, mechanism of injury, presence of rheumatoid arthritis, osteopenia/osteoporosis, time from injury to surgery, type of intervention utilized (ORIF, pinning, arthrodesis), use of bone grafting, and surgical complications were recorded. To evaluate outcomes, we used the Patient Reported Outcomes Measurement Information System (PROMIS) survey and Foot Function Index (FFI) scores. RESULTS: A total of 248 patients met the criteria for our study with 80 participants completing both the PROMIS and FFI surveys. The average PROMIS physical function, pain interference, and depression scores were reported as 43.2, 55.4, and 45.4, respectively. The average FFI scores in this population are as follows: FFI pain- 37.1, FFI disability- 34.2, FFI activity limitation- 12.35, and the average FFI total score was 30.95. There was a significant decrease in postoperative pain scores when compared to preoperative pain from 5.23 to 1.85 (p=0.046). Complications were fairly low in this population with 4 patients experiencing surgical site infection, 36 patients described problematic hardware, and 45 patients underwent revisional surgery. CONCLUSION: Preliminary results suggest surgical intervention for Lisfranc injuries may be viewed as satisfactory amongst patients. Further analysis to compare patient reported outcomes based on the type of surgical intervention, hardware used for fixation, and whether any patient demographic factors have any influence on these outcomes are being conducted. Our fairly large patient population has a time from surgery date ranging from 1.5 years to 11.2 years. We believe further analysis will also provide quality information on the long-term outcomes regarding Lisfranc injuries