Growth plates at the ends of bones help them elongate but are weaker than solid bone, making them prone to irritation. In Sever’s disease, the heel bone grows faster than the surrounding tissues, causing the tight Achilles tendon to pull on the growth plate at the back of the heel. This repetitive strain, especially during running or jumping, leads to heel pain, often worsening with sports.

This condition only affects growing children, as growth plates solidify into bone upon maturity. Until then, it can be painful and limit participation in physical activities. Early treatment can help manage symptoms and support recovery.