Iselin’s disease is a uncommon cause of pain on the outer side of the foot in youngsters and adolescents. This condition is an osteochondrosis or apophysitis due to traction in the base of the fifth metatarsal bone. The peroneal brevis tendon attaches on the site and puts the bone with a lot of stress. https://podiatrynewyorkcity.com/iselins-disease-of-the-fifth-metatarsal/