Annals of emergency medicine
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Multicenter Study
Validation of the Ottawa Knee Rule in children: a multicenter study.
The main objective of this study was to determine the sensitivity and specificity of the Ottawa Knee Rules when they were applied to children. The secondary objective was to determine post hoc whether use of the rules would reduce the number of knee radiographs ordered. ⋯ The Ottawa Knee Rules are valid in children and have the potential to decrease the use of radiography in children with knee injuries.