What is the purpose of imaging in pediatric physeal injuries, and how is it commonly used to guide management?

• A. Imaging helps classify injuries by Salter-Harris types I-V and guide management; avulsion fractures may be identified on plain radiographs
• B. Imaging is never necessary
• C. Imaging only reveals soft tissue injuries
• D. Only MRI is used

Answer: (A)

Imaging in pediatric physeal injuries serves to identify the exact pattern at the growth plate and assess displacement, which directly guides treatment decisions. Plain radiographs are typically the first-line study and can classify injuries into Salter-Harris types I–V and often reveal avulsion fractures at physes or apophyses. Knowing the type and amount of displacement helps determine whether immobilization is enough, whether reduction is needed, or if surgical fixation is warranted to protect growth. While radiographs are central, MRI is used when radiographs don’t fully show the physeal injury or when cartilage or soft-tissue involvement is suspected, providing detailed information about the physes and surrounding structures without radiation.