Biomechanics associated with tibial stress fracture in runners: A systematic review and meta-analysis.

Tibial stress fractures are a common overuse running injury with a long recovery, and researchers have long debated whether specific running mechanics make some runners more vulnerable. This systematic review and meta-analysis pulled together studies comparing runners who had experienced a tibial stress fracture with uninjured control runners, looking at ground reaction forces and other movement and loading measures during running. When the researchers pooled data across studies for ground reaction forces, impact, active, and braking forces were not statistically significantly different between the injured and control groups. Some individual studies did report differences in other measures, such as tibial bone stress, acceleration, rearfoot eversion, and hip adduction, but these came from single studies rather than pooled data.

The main limitation is that most of the 14 included studies were small and retrospective, so many comparisons simply lack the numbers needed to draw firm conclusions either way.

If you have ever had a tibial stress fracture, which is a small crack in the shin bone from repeated stress, you may wonder whether something about the way you run contributed to it. This review looked at existing studies that compared the running mechanics of people with this type of fracture to those of runners who never had one. When researchers combined results across studies, forces measured as the foot strikes the ground were not meaningfully different between the two groups.

Some individual studies found other differences, like more inward rolling of the foot at the ankle or extra bone stress in the shin, but each of these came from just one study, so it's hard to know how reliable they are. Overall, the review could not clearly identify consistent movement patterns that set apart runners with this fracture. The studies involved were mostly small and looked back in time rather than tracking runners before injury happened, which limits how much confidence we can place in any of these findings.

This is a summary of research, not medical advice. Talk to your own healthcare provider about anything affecting your care.

This review addresses a question many physiotherapists face when assessing a runner recovering from a tibial stress fracture: are there identifiable biomechanical risk factors that distinguish these runners from uninjured peers, and should running gait be a focus of assessment or reasoning around return to running. The authors searched six databases and identified 14 studies, mostly retrospective and small (around 5 to 30 participants per group), comparing biomechanics between runners with a history of tibial stress fracture and controls. Meta-analysis of discrete ground reaction force variables, peak impact, active, and braking forces, found no statistically significant differences between groups, which does not support ground reaction force magnitude alone as a distinguishing factor.

Several individual studies reported differences in tibial bone stress, peak axial acceleration, rearfoot eversion, and hip adduction, but these come from single studies each, meaning they could reflect chance findings rather than a consistent pattern, and were not confirmed through pooled analysis. The review does not establish that any of these biomechanical variables cause tibial stress fracture, nor does it establish that altering them during rehabilitation reduces reinjury risk, since the included studies were observational and mostly retrospective. The small, heterogeneous evidence base limits confidence in any single variable, and the authors themselves call for larger, adequately powered studies before these findings can be confirmed or refuted.