Bone Stress Injuries Are Associated With Differences in Bone Microarchitecture in Male Professional Soldiers

Published on August 26, 2019 by Schanda J, Kocijan R, Resch H, Baierl A, Feichtinger X, Mittermayr R, Plachel F, Wakolbinger R, Wolff K, Fialka C, Gruther W, Muschitz C

Key Takeaway

Male soldiers with tibial bone stress injuries exhibit significant deficits in bone microarchitecture, including reduced cortical density and thinner, more irregular trabecular networks.

Schanda J., Kocijan R., Resch H., Baierl A., Feichtinger X., Mittermayr R., Plachel F., Wakolbinger R., Wolff K., Fialka C., Gruther W., Muschitz C.. (2019). Bone Stress Injuries Are Associated With Differences in Bone Microarchitecture in Male Professional Soldiers. https://doi.org/10.1002/jor.24442

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What this study found

This cross-sectional study compared 26 male professional soldiers with tibial diaphysis bone stress injuries (BSIs) to 50 healthy peer controls. Using high-resolution peripheral quantitative computed tomography (HR-pQCT), researchers identified distinct microarchitectural differences. Soldiers with BSIs demonstrated significantly lower cortical bone mineral density at both the radius and tibia. Furthermore, their tibial bone showed reduced trabecular number and thickness, alongside a more inhomogeneous trabecular network. These structural deficits were present despite the subjects being otherwise healthy, active young men.

Why it matters

For clinicians managing athletes and military personnel, this study highlights that bone stress injuries are not solely a product of training load, but are heavily influenced by underlying bone quality. Traditional dual-energy X-ray absorptiometry (DXA) measures areal bone mineral density but often misses these crucial microarchitectural details. The findings suggest that compromised trabecular networks and lower cortical density impair the bone’s biomechanical capacity to withstand repetitive loading. In rehabilitation and sports medicine, understanding these microarchitectural predispositions can help clinicians design more cautious, individualized progressive loading programs for high-risk individuals.

Limitations

The study’s cross-sectional design prevents establishing a direct causal link; it remains unclear whether these microarchitectural differences were pre-existing genetic traits or influenced by prior lifestyle factors. Additionally, the cohort was limited to young, male Caucasian professional soldiers, meaning the findings may not fully generalize to female athletes or older populations who present with different hormonal and metabolic risk profiles.

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