Iselin's disease is best described as

Iselin's disease is best described as

• A. 5th metatarsal apophysitis
• B. Calcaneal apophysitis
• C. 4th metatarsal fracture
• D. Navicular fracture

Answer: (A)

Iselin's disease is best described as a traction apophysitis at the base of the fifth metatarsal in skeletally immature patients. Repetitive pulling by the peroneus brevis tendon on the unfused apophysis at the tuberosity causes localized lateral-foot pain and tenderness. On imaging, you may see fragmentation or widening at the growth plate of the base of the fifth metatarsal, which reflects stress at this growth center rather than a true fracture. This condition commonly affects active adolescents and improves with rest and activity modification; treatment is usually conservative, with immobilization or temporary cessation of aggravating activities if needed. Other descriptions don’t fit because calcaneal apophysitis involves the heel’s growth plate, a navicular fracture is a disruption of the navicular bone, and a 4th metatarsal fracture is a fracture at a different foot location.

Iselin's disease is best described as a traction apophysitis at the base of the fifth metatarsal in skeletally immature patients. Repetitive pulling by the peroneus brevis tendon on the unfused apophysis at the tuberosity causes localized lateral-foot pain and tenderness. On imaging, you may see fragmentation or widening at the growth plate of the base of the fifth metatarsal, which reflects stress at this growth center rather than a true fracture. This condition commonly affects active adolescents and improves with rest and activity modification; treatment is usually conservative, with immobilization or temporary cessation of aggravating activities if needed.

Other descriptions don’t fit because calcaneal apophysitis involves the heel’s growth plate, a navicular fracture is a disruption of the navicular bone, and a 4th metatarsal fracture is a fracture at a different foot location.