Keeping plaster casts dry: what works?
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Updated: Aug 20, 2026

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Published on: June 5, 2021
Dominic M Nielsen1, Lionel G Ripley, David M Ricketts
1Princess Royal Hospital, Haywards Heath, Sussex, UK. domnielsen@hotmail.com
Abstract:
Plaster casts are commonly used in the management of fractures. The mechanical properties of plasters are adversely affected by water. There are a number of commercial products available to allow patients to continue to shower and swim by protecting the plaster. The aim of this study was to compare these products with a plastic bag and elastic band. Each protector was tested in a shower, immersed in a swimming pool and worn while swimming. The volume of water intrusion was measured. There was no significant difference between a plastic bag and the commercially available products. We do not recommend the use of commercially available plaster protectors for showering or swimming: a plastic bag and elastic band is a cheaper and more convenient device.
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