Diaphyseal forearm fractures in children are common and knowledge of both ordinary and rare variations of these are important to deliver the best treatment as presented in this review. Closed reduction and cast immobilisation are effective and well-documented treatments for most fractures. Fractures which cannot be sufficiently treated in a cast are stabilised with elastic stable intramedullary nailing which is an effective treatment with a low complication rate. The focus in reduction is to correct alignment, displacement, and rotation to restore normal function of the forearm.