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Waterproof cast liners for pediatric forearm fractures – A comparison of two products

Introduction Waterproof lining in casting in the pediatric population is becoming more commonplace due to the improved quality of life for the child by providing patients with a higher physical functional level when compared to those with non-waterproof lining. The objective of this study is to compare patient satisfaction and outcomes of two commonly used waterproof liners. Methods A prospective, randomized-controlled trial of children with stable forearm fractures not requiring reduction was conducted. Of those who chose a waterproof lining, patients were randomized to one of two products: Delta Dry® or Aquacast®. At the time of cast removal, each patient and medical assistant who applied and removed the cast completed surveys about their satisfaction with the cast. A two-sample T-test for independent samples was used to compare the two cast liners. Results Both liners were well liked by patients with no statistically significant difference in satisfaction scores nor were there differences in water exposure between the two groups (pool use, showering, or lake swimming). The medical assistants scored Aquacast® higher in three out of four domains but again there was no statistical difference. There were no fracture complications nor problems from cast application or removal. Conclusion Both waterproof cast liners were safe and efficacious. No significant differences were detected in any measured parameter including overall high patient satisfaction.