Article

Lower-limb stress fracture is one of the most common types of running
injuries. There have been several studies focusing on the association between
stress fractures and biomechanical factors. In the current study, the ground
reaction force and loading rate are examined. There is disagreement in the
literature about whether the history of stress fractures is associated with
ground reaction forces (either higher or lower than control),
or with loading
rates. METHODS: a systematic review of the literature was conducted on the
relationship between the history of tibial and/or metatarsal stress fracture and
the magnitude of the ground reaction force and loading rate. Fixed-effect
meta-analysis techniques were applied to determine whether or not the ground
reaction force and/or loading rate are different between the stress fracture and
control groups. FINDINGS: thirteen articles were identified through a systematic
search of the literature. About 54% of these articles reported significantly
different vertical ground reaction force and/or loading rate between the stress
fracture and control groups. Other studies (~46%) did not observe any significant
difference between the two groups. Meta-analysis results showed no significant
differences between the ground reaction force of the lower-limb stress fracture
and control groups (P>0.05). However, significant differences were observed for
the average and instantaneous vertical loading rates (P<0.05). INTERPRETATION:
the currently available data does not support the hypothesis that there is a
significant difference between the ground reaction force of subjects experiencing
lower-limb stress fracture and control groups. Instead, the vertical loading rate
was found to be significantly different between the two groups.
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Langue : ANGLAIS