• Michelle Seiler, Peter Heinz, Alessia Callegari, Thomas Dreher, Georg Staubli, and Christoph Aufdenblatten.
• Pediatric Emergency Department, University Children's Hospital Zurich, Steinwiesstrasse 75, 8032, Zurich, Switzerland. michelle.seiler@kispi.uzh.ch.
• Int Orthop. 2021 Mar 1; 45 (3): 759-768.

PurposeThe aim of this study was to investigate whether short-arm fiberglass cast (SAC) immobilization provides fracture stabilization comparable to that of long-arm cast (LAC) treatment of displaced distal forearm fractures after closed reduction in paediatric patients.MethodsA prospective, randomized, controlled trial of children aged four to 16 years (mean 9.9 years) was designed with a sample of 120 children, whose size was set a priori, with 60 treated with SAC and 60 with LAC. The primary outcome was fracture stability and rate of loss of reduction. The secondary outcome analysis evaluated duration of analgesic therapy, restriction in activities of daily life, and the duration until patients regained normal range of motion in the elbow.ResultsNo statistically significant differences were found between the two groups in loss of reduction or duration of analgesic therapy. In contrast, the duration until normal range of motion in the elbow was regained was significantly longer in the LAC group (median 4.5 days, P < 0.001). Restriction in activities of daily life did not differ significantly between the two groups except for the item "help needed with showering in the first days after trauma" (SAC 60%, LAC 87%, P = 0.001).ConclusionFracture immobilization with short-arm fiberglass cast in reduced distal forearm fractures is not inferior to long-arm casts in children four years and older, excluding completely displaced fractures. Furthermore, short-arm casting reduces the need for assistance during showering.Trial RegistrationNCT03297047, September 29, 2017.

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