These Biomechanical Factors May Predict Achilles Tendon Injuries in Runners

Higher weekly mileage and certain ankle movement patterns during running were linked to increased or decreased injury risk in a yearlong prospective study.

By
Olivia Anderson
February 26, 2026
3 min

Conexiant

Objective:

To investigate biomechanical factors and running volume that may predict the risk of developing Achilles tendinopathy in runners.

Approach:

Key Findings:

23 participants developed new Achilles tendon injuries over 12 months, with a higher incidence in runners (3.8%) compared to nonrunners (0.8%).
Every 7.8-mile increase in weekly running distance raised the risk of Achilles tendinopathy by 67%.
Stronger inward-rolling force during the stance phase was associated with a lower risk of injury.
Foot strike patterns did not significantly influence injury risk.

Interpretation:

The study suggests that monitoring running volume and specific ankle mechanics may help in designing effective injury prevention strategies for runners.

Limitations:

The study did not find age and sex to be statistically significant predictors after adjustments.
Potential bias due to the involvement of a co-author with a commercial interest in the biomechanical software used.

Conclusion:

Higher weekly running distances significantly elevate the risk of Achilles tendinopathy, while certain ankle mechanics may provide protective factors against injury.