What a stress fracture is
Bone constantly repairs itself in response to loading. A stress fracture happens when the damage from repeated loading outpaces that repair, producing a small crack. The stage before it, where bone is stressed but not cracked, is sometimes called a bone stress injury.
Common sites in young athletes are the shin, foot bones, heel and, in some sports, the lower back or hip.
The warning signs
- Pain in one specific spot you can point to with a fingertip.
- Pain that builds during activity and eases with rest, then starts earlier each session.
- Tenderness when pressing directly on the bone.
- Pain when hopping on that leg.
- Pain that is starting to appear at rest or at night.
Do not train through this one
Bone pain in one small spot that is getting earlier in each session should be assessed rather than managed at home.
Why female athletes are more affected
That combination is why a stress fracture in a teenage girl is treated as a whole-athlete question, not simply a local injury.
- Under-fuelling is more common, which limits the bone repair side of the equation.
- Absent or irregular periods reduce the hormonal support bone needs during these years.
- Low vitamin D or calcium intake.
- High-volume running or repetitive impact with little strength work alongside.
- A rapid rise in training, a new season, a new squad, a growth spurt.
Getting it diagnosed
See a GP or physiotherapist. Examination is often suggestive, and imaging may be arranged. Ordinary X-rays frequently miss early stress fractures, so an MRI scan is sometimes needed to confirm one.
Alongside the imaging, expect questions about periods, eating, training history and any previous bone injury. Those answers shape the plan as much as the scan does.
Recovery and getting back
Most young athletes get back to full sport. Coming back on the same weekly load, with the same fuelling, is what leads to the next one.
- A period of reduced or protected loading, guided by the site and severity.
- Fuelling addressed properly, including calcium, vitamin D and iron.
- Keeping fitness through low-impact work where the injury allows it.
- Strength work for the surrounding muscles throughout.
- A graded return, adding impact volume in small steps over weeks.
- Cycle and bone health reviewed, especially after a second injury.