Comparison of injury rates between cadets with limb length inequalities and matched control subjects over 1 year of military training and athletic participation.

Objectives: To compare lower-limb overuse injury and low back pain incidence among cadets with and without limb length inequality (LLI) over 1 year of military training and athletic participation.

Methods: A total of 1,100 cadets were screened for LLIs; 126 of 1,100 were identified to have a LLI of > 0.5 cm and were assigned a matched control cadet. Injury rates, numbers of visits to sick call, and numbers of days spent on medical excusal during a 1-year period were then compared for the 252 cadets.

Results: There was no difference in prevalence of injury between the groups and no significant differences (p > 0.05) between the groups in injury rates, visits to sick call, or number of days spent on medical excusal.

Conclusions: These findings do not support any increased incidence of injuries in a young, healthy, athletic, military population with mild LLIs, compared with matched control subjects without LLIs, over 1 year.