When young athletes experience persistent foot or ankle pain, the diff
erential diagnosis includes overuse syndromes, exacerbated chronic or
congenital conditions, and poor healing of earlier acute injuries. Oft
en, prompt diagnosis and treatment of an acute injury might have preve
nted a chronic condition. Conditions discussed in this article include
distal fibular epiphyseal fracture, lateral ligament sprain, tibiofib
ular ligament sprain, peroneal tendon dislocation, Achilles tendinitis
, Sever's disease, talar dome osteochondral fracture, and tarsal coali
tion.