What is a Bone Stress Injury?
Definition: the symptomatic break down of the bone structure due to repetitive submaximal loading.
It is natural and healthy for bones to be loaded, stress injuries only occur if bone is overloaded and pushed further than the bone can adapt/recovery too. Bone mass, density and how bone mass is distributed influences how bone copes with different forces. This means bones with larger cross-sectional areas cope with tension and compression load better.
When bone is subjected to loads that are higher than expected the remodelling process is initiated to increase bone mass and density, to make the bone stronger and more capable of coping with higher loads – this adaptation process takes time.
If the bone is exposed to more load during this process -this leads to bone microfractures and symptomatic pain.