Stress fracture is a common overuse injury experienced by participants of activities involving repetitive loading such as running and loaded walking. One population especially susceptible to this type of injury is US ARMY recruits. The incidence of stress fracture during basic training is about 6% in recruits [1] with the most common site of fracture being the tibia; these tibial stress fractures account for more than 40% of total stress fractures in the military [2,3].