How well does bivalve cast immobilization maintain reduction of pediatric displaced forearm fractures?

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Why is this study important?

Following closed reduction (CR) of displaced forearm fractures, immobilization is used to minimize loss of reduction (LOR). Bivalve and circumferential casts are both used on a regular basis. Bivalve casts are used because they are less restrictive and reduce neurovascular compromise whereas circumferential casts are presumed to maintain fracture alignment, so they are less likely to require recasting. This trial compares the 2 methods in a pediatric population.

Which, if any, threats to validity are most likely to have an impact on the results and how?

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