Waterproof cast liners in paediatric forearm fractures: a randomized trial

Waterproof casts have been shown to provide adequate support and immobilization in fractures. This study evaluated two waterproof cast liners, namely, Wet or Dry(®) and Delta Dry(®), in terms of ease of application/removal, durability, longevity, and patient satisfaction using patient- and technician-reported outcome measures.

A total of 105 children were enrolled in a randomized trial and received a below-elbow synthetic cast with either of the two cast liners.

The two groups were comparable with regards to age, gender, side of cast, and hand dominance. Assessment was carried out at application and removal. In the patient-reported outcomes, the Wet or Dry(®) group was rated significantly better in the odor and water resistance categories. In the technician-reported application and removal outcome measures, the Delta Dry(®) group was rated significantly higher.

The use of waterproof cast liners appears to be safe in children with forearm fractures, with some differences in outcome between the two products trialed.