sports shoes are the most frequent cause simply because they frequently pinch the forefront parts of the foot, and hang more pressure than usual round the balls in the foot to carry the burden in the body frequently for professional-wanted periods of time. Additional circumstances that may result in the development of calluses and in-grown toenails are: Prolonged standing this might situation foot to swell and raise the pressure and friction felt from footwear. http://www.newjordanshoesforsaleonline.com/women-jordan-shoes-c-98.html http://www.newjordanshoesforsaleonline.com/air-jordan-3-retro-c-68.html http://www.newjordanshoesforsaleonline.com/air-jordan-4-retro-c-69.html http://www.newjordanshoesforsaleonline.com/air-jordan-9-retro-c-74.html