Also, the bone itself will be tender. Illuminexa Anterior compartment syndrome affects the outer side of the front of a person's leg. Stress fractures will usually produce a localized, sharp pain with tenderness one or two inches below a person's knee. A stress fracture is most likely to occur two or three weeks into a new training program or after the beginning of a more strenuous training regimen.e skin. http://www.muskelaufbauhilfe.com/illuminexa/