足と足首の臨床研究

抽象的な

Stress Fractures of the Foot and Ankle in Athletes,

Hanneke Weel MD

Stress fractures occur due to repetitive forces on the bones and develop over time. The etiology differs from a traumatic fracture and therefore stress fractures are more an overload injury. Stress fractures of the foot and ankle are frequently seen in athletes and can be a potentially career ending injury for these high demanding sportsmen. Some locations are considered as high-risk stress fractures due to slow healing and high rates of non-unions. This article discusses the most common sites for stress fractures of the foot and ankle, the risks and evidence on best treatment options.

A stress fracture develops over time and is the result of an overload of the bone. Therefore these fractures are also called fatigue fractures. The etiology differs from traumatic fractures, because the damage is caused when repeated forces on the bone outruns its remodelling capacity. This can eventually result in micro-fractures leading to a weak spot and when loading proceeds, a stress fracture can arise. Another difference with a traumatic fracture is the stress fracture’s healing process. It is described that stress fractures do not heal by callus formation, but more via direct remodelling of bone across the fracture line. This is a slower process and more comparable to the healing pathways of non-unions.