Oblique radiograph of the foot demonstrating Iselin's apophyisitis. Note the separation of the apophysis from the base of the fifth metatarsal.
Reproduced from: Ayer A, Hennrikus W. Foot pain in the child and adolescent athlete. Pediatr Clin N AM 2014: 61:1185. Illustration used with the permission of Elsevier Inc. All rights reserved.