shows the progression of bone stress.įig. Most running stress fractures are impact related, with the fractured bone having to absorb the repetitive ground reaction force.įig 1. Traction (muscles and connective tissue pulling on the bone repeatedly/excessively), impact, rotation or a combination of the above. The mechanism of stress fractures can be split into four camps: The cardinal sign of most running injuries! This is another great example of ignoring the law of adaptation and doing too much too soon. When this happens regularly, a stress fracture can result. ![]() If however, repeated load is placed on the bone, without sufficient recovery time in between, the bone doesn’t have the time to strengthen before the next bout of loading is applied. When you load a bone, like in running, and give it sufficient recovery, it undergoes a process of re-absorption and bone formation that ultimately strengthens the bone. So running is generally great for bone health. Now, I don’t want anyone reading this to worry about running and the health of your bones: Your bones are organic tissue and respond brilliantly to loading. So the forces experienced are not great enough to break the bone outright, but the repeated application of that stress, without adequate recovery is enough for the bone to fail. ![]() Stress fractures, on the other hand, are the result of an accumulation of sub-maximal loading over time. Standard fractures are usually caused by a sudden, severe, high force trauma, like a fall from a great height, or a road traffic accident. It differs from a standard fracture by way of mechanism. So if you’re sitting comfortably, we shall begin… What is a Stress Fracture?Ī stress fracture is essentially a crack or break in the bone. ![]() In this article, I’ll try to give you a good overview of stress fractures generally, as well as giving you a little insight into my mind (scary place to be I know!) when I’m reasoning through how to manage a stress fracture, as there are a number of variables to be aware of.
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