Bone Health For Runners
This guide explains what bone stress injuries are, why they happen, & the symptoms to watch for.
As spring arrives with warmer weather and longer days, you might find yourself lacing up your running shoes more often – whether it's for post-work runs or to train for a summer race. But as your running volume climbs, so does your risk of bone stress injuries (BSIs). Knowing how to spot the symptoms, recognize the risk factors, and seek treatment is essential for staying healthy and injury-free.
What is a bone stress injury, and why does it happen?
A bone stress injury occurs when a bone can no longer withstand the repetitive load being placed on it. These injuries are common in endurance athletes and in sports that involve repeated impact, like running or jumping.
On a microscopic level, our bones are constantly undergoing a process of breakdown and rebuilding in response to physical stress. Stress is placed on bones through muscle contractions (pulling on the bones) and ground reaction forces. In a healthy system, bone is rebuilt at the same rate – or faster – than it is broken down. However, when breakdown outpaces rebuilding, a bone stress injury can develop.
Bone stress injuries occur along a continuum, progressing through the following stages:
- Stage 1: bone stress response
- Stage 2: bone stress reaction
- Stage 3: bone stress fracture
Symptoms of bone stress injuries
The most common sites for bone stress injuries are in the lower limbs, especially during weight-bearing activities. Areas to watch include:
- Femur – neck or shaft
- Tibia – anterior surface or medial malleolus
- Fibula – lateral malleolus
- Bones of the foot – navicular, cuboid, cuneiforms, metatarsals, talus, or calcaneus
Pain that worsens with impact activities and improves with rest is often an early sign. If symptoms are ignored, the injury can worsen and become more difficult to treat.
How are bone stress injuries diagnosed?
The gold standard for diagnosing a bone stress injury is magnetic resonance imaging (MRI). It can detect early signs of injury much sooner than an X-ray, allowing for more accurate treatment and quicker recovery.
How can I decrease my risk?
Reducing your risk of a bone stress injury comes down to smart training and recovery habits. Here are a few key tips:
- Avoid training errors, such as rapid increases in mileage or intensity.
- Be aware of medical history that could increase your risk (for example, osteoporosis, oral steroid use, or past cancer treatments).
- Vary training surfaces and avoid running exclusively on hard surfaces.
- Replace worn-out shoes to maintain proper support.
- Fuel your body properly with adequate calorie intake.
- Ensure you're getting enough calcium and vitamin D.
- Prioritize recovery with sufficient sleep and stress management.
Key takeaway
Pain that worsens with impact and eases with rest is often the earliest sign of a bone stress injury – don't run through it. Catching it early makes treatment simpler and recovery faster.
Ready to run stronger and stay injury-free? Come see us at Kauno for a performance assessment or a return-to-run program built around you.
Common questions
What is a bone stress injury?
A bone stress injury occurs when a bone can no longer withstand the repetitive load being placed on it. It develops when the breakdown of bone outpaces the body's rebuilding of it, and it is common in endurance athletes and impact sports like running or jumping.
What are the symptoms of a bone stress injury?
Pain that worsens with impact activities and improves with rest is often an early sign. The most common sites are in the lower limbs during weight-bearing activities, including the femur, tibia, fibula, and bones of the foot.
How is a bone stress injury diagnosed?
The gold standard is magnetic resonance imaging (MRI), which can detect early signs of injury much sooner than an X-ray, allowing for more accurate treatment and quicker recovery.
How can I decrease my risk?
Focus on smart training and recovery: avoid rapid increases in mileage or intensity, vary your training surfaces, replace worn-out shoes, fuel with adequate calorie intake, get enough calcium and vitamin D, be aware of relevant medical history, and prioritize sleep and stress management.
