As the name implies, new bone is formed at a growth plate, which also exists in other bones such as the leg bones, arm bones, etc. This pulling effect usually does not cause a problem. The problem is self limiting and goes away after the growth plate closes, around the age of 13 to 14 years old. As cartilage is softer than bone, the thin growth plate frequently becomes irritated and painful as the traction force increases. The pain is noted not only under the heel but also with side to side compression of the bone.
Treatment includes rest, ice and antiinflammatory medication.
An arch support and heel lift are both helpful. For severe cases, a non weight bearing splint or cast may be applied. Long term treatment usually includes use of functional orthotics. The problem is self limiting and goes away after the growth plate closes, around the age of 13 to 14 years old.