X-ray of the
foot of a 11 year old male, showing sclerosis and fragmentation of the calcaneal apophysis. This is a sign of low sensitivity and specificity of Sever"s disease, because those with Sever"s disease may not have it, and it is commonly also present in feet without any symptoms. Mark A Noffsinger (2016-09-07). Calcaneal Apophysitis (Sever Disease) Workup. Medscape. Retrieved on 2017-01-19. Diagnosis was rather made by the patient"s typical symptoms of pain in the heel at exercise.