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Ultrasound Directed Reduction of Colles' type distal radial fractures in ED (UDiReCT): a feasibility randomised
Hamza Malik1, Darryl Wood2, Oliver Stone3
1Emergency Medicine, Royal Devon University Healthcare NHS Foundation Trust, Exeter, Devon, UK.
Background:
There is a high rate of surgical fixation of displaced Colles' type distal radial wrist fractures despite fracture manipulation in the ED. Point-of-care ultrasound has been used to guide ED manipulations but its effect on the quality of fracture reduction or subsequent need for surgical fixation is unknown. This study aims to assess the feasibility of conducting a definitive randomised controlled trial to assess the use of ultrasound to guide these fracture manipulations.
Methods:
We conducted a pragmatic randomised controlled feasibility trial in two EDs in England over a 6-month period (7 October 2019 to 6 April 2020). Adult patients with wrist fractures undergoing manipulation in the ED were randomised 1:1 to ultrasound-guided distal radial fracture manipulation or manipulation with sham ultrasound. The primary outcome for this study was trial recruitment rate. Other measures were recorded to assess potential future definitive trial outcomes and feasibility.
Results:
Of 120 patients meeting inclusion criteria, 48 (40%) were recruited and randomised in the two centres, giving overall recruitment rates of 0.3 and 1.8 participants per week at each site, respectively, and 1 participant per week overall. The most common reason that patients were not included was research staff availability. After 6 weeks, six patients in each group (26% intervention, 24% control) had undergone surgical fixation, with 98% data completeness for this potential definitive trial primary outcome. Randomisation, blinding and data collection processes were effective but there were data limitations in the X-ray assessment of fracture positions.
Conclusion:
A definitive study of a similar design would be feasible within UK ED practice but organisational factors and research staff availability should be considered when estimating the predicted recruitment rate and required sites. 6-week surgical fixation rate was the most reliable outcome measure.
Trial Registration:
ClinicalTrials.gov (NCT03868696).
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