Outcomes Following Early Weight Bearing in Syndesmotic Injuries: A Randomized Controlled Trial

Category: Trauma; Ankle Introduction/Purpose: Syndesmotic injuries occur in 10% of ankle fractures. Restoration and maintenance of the distal tibiofibular stability is crucial. The literature regarding time to weight bearing is scarce, with the majority recommending greater than 6 weeks of non-weigh...

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Main Authors: Mubinah Khaleel DO, Elizabeth C. Durante MD, MSCR, Sam Hawkins, Gregory J. Della Rocca MD, PhD, MBA, FACS, James P. Stannard MD, Brett D. Crist MD, FAAOS, FACS, FAOA, Kyle M. Schweser MD
Format: Article
Language:English
Published: SAGE Publishing 2024-12-01
Series:Foot & Ankle Orthopaedics
Online Access:https://doi.org/10.1177/2473011424S00397
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Summary:Category: Trauma; Ankle Introduction/Purpose: Syndesmotic injuries occur in 10% of ankle fractures. Restoration and maintenance of the distal tibiofibular stability is crucial. The literature regarding time to weight bearing is scarce, with the majority recommending greater than 6 weeks of non-weight bearing. No studies examine whether early weight bearing as tolerated is safe in syndesmotic injuries, and current early weight bearing studies after ankle fractures typically exclude syndesmotic injuries. Purpose: The purpose of this randomized controlled trial is to measure differences between early weight bearing at 2 weeks and delayed weight bearing at 6 weeks in terms of outcomes, hardware failure, and loss of reduction at 1 year. Methods: All rotational ankle fractures in patients over 18 were enrolled preoperatively. Only those who received syndesmotic fixation were randomized post-operatively to early vs delayed weight bearing. No fracture types were excluded. All syndesmotic fixation utilized suture buttons. A total of 39 patients were enrolled. Primary outcome was maintenance of reduction at 1 year comparing post-operative and 1 year CT scan of both ankles. Secondary outcomes included pain scores, surgical experience (SSQ-8), AAOS Foot and Ankle, range of motion, and complications. Data was analyzed using unpaired t-test and Fishers exact. Statistical significance was set at p < 0.05. Results: 16 patients were randomized to early weight bearing and 23 patients to delayed. The early weight bearing group had a significantly higher pain score (4.69 ± 2.84 vs 2.87 ± 2.31, p = 0.039) at the baseline 2 week visit. At 1 year, dorsiflexion in the early weight bearing group was significantly higher (14.2° ± 3.97° vs 7.71° ± 4.46°) than the delayed group (p = 0.017). There was no significant difference in syndesmotic malreduction, loss of reduction, pain scores, PROs, development of arthritis or complication rates at any other timepoint. Conclusion: Early weight bearing is safe following syndesmotic fixation in ankle fractures, at least in those receiving suture button fixation.
ISSN:2473-0114