The radius and ulna form a ring in the forearm that transmits forces from the wrist to the elbow during a fall. Both bone forearm fractures are typically described based on their location (i.e. middle third), direction of angulation, and whether the fractures are complete or incomplete (i.e. greenstick) fractures. The radius and ulna each have a proximal and distal physis, but the distal physis in both of the bones account for the vast majority of growth in the forearm. Thus, fractures closer to the distal physis have greater potential for remodeling after they heal.
Full Article - https://www.orthopaedia.com/pediatric-fractures-of-the-upper-extremities/#Forearm-Fractures
