In briefCalcaneal apophysitis, a condition commonly seen in active adolescents, results in pain in the posterior aspect of the os calcis, or heel. Radiographic findings sometimes noted at the calcaneal apophysis, including fragmentation and increased density of the apophysis, were once thought to be evidence of osteochondrosis. These findings are now recognized as a normal stage of apophysis development and appear to be unrelated to the symptoms. Teatment, which generally produces excellent results, includes restriction of physical activity, nonsteroidal anti-inflammatory medication, icing, a heel lift, and a stretching program.