An article of footwear having an upper and a sole structure secured to the upper, the sole structure comprising: a midsole formed from a foamed polymer material and positioned adjacent to the upper; an elevated plate structure formed from a substantially non-foamed material and being substantially embedded within the midsole, the elevated plate structure comprising: an upper plate having an upper surface oriented toward the upper and an opposite lower surface oriented away from the upper; and a plurality of legs extending downward from the lower surface away from the upper; and an outsole at a bottom portion of the article of footwear opposite the upper configured to engage the ground during use, end portions of the plurality of legs engaging an upper region of the outsole, the elevated plate structure further comprising a lower plate oriented generally parallel with the upper plate and forming an upper region of the outsole, the lower plate engaging end portions of the plurality of legs, wherein the end portions of the plurality of legs engage an upper portion of the lower plate in a fixed arrangement, characterized in that the upper portion of the lower plate includes a plurality of sockets formed therein receiving end portions of the plurality of legs in a fixed arrangement; and wherein the upper plate lower surface, the plurality of legs and an upper surface of the lower plate form a cage region, the sole structure further comprising a chamber having a fluid-filled configuration disposed substantially within the cage region. a midsole formed from a foamed polymer material and positioned adjacent to the upper; an elevated plate structure formed from a substantially non-foamed material and being substantially embedded within the midsole, the elevated plate structure comprising: an upper plate having an upper surface oriented toward the upper and an opposite lower surface oriented away from the upper; and a plurality of legs extending downward from the lower surface away from the upper; and an upper plate having an upper surface oriented toward the upper and an opposite lower surface oriented away from the upper; and a plurality of legs extending downward from the lower surface away from the upper; and an outsole at a bottom portion of the article of footwear opposite the upper configured to engage the ground during use, end portions of the plurality of legs engaging an upper region of the outsole, the elevated plate structure further comprising a lower plate oriented generally parallel with the upper plate and forming an upper region of the outsole, the lower plate engaging end portions of the plurality of legs, wherein the end portions of the plurality of legs engage an upper portion of the lower plate in a fixed arrangement, characterized in that the upper portion of the lower plate includes a plurality of sockets formed therein receiving end portions of the plurality of legs in a fixed arrangement; and wherein the upper plate lower surface, the plurality of legs and an upper surface of the lower plate form a cage region, the sole structure further comprising a chamber having a fluid-filled configuration disposed substantially within the cage region.