This case report demonstrates a paediatric calcaneal stress fracture not seen on traditional radiograph but diagnosed by MRI. A young athlete presented at age 15 with heel pain and no trauma. Calcaneal stress fractures in children are rare and could be underdiagnosed since radiographs are often false negative especially in the early stages. https://www.ngetikin.com/quick-offer-1-Gallon-Universal-Primer-Pro-Deep-Penetrating-Primer-big-deal/