An endoprosthesis , comprising: an expandable tubular framework having a first end and a second end defining a length therebetween, and a lumen extending therethrough along a central longitudinal axis, the expandable tubular framework being expandable from a compressed state to an expanded state and including: a plurality of strut rows , wherein adjacent strut rows define interstices therebetween, each interstice having a length along the central longitudinal axis and spacing the adjacent strut rows apart; a plurality of connectors extending across the interstices between adjacent strut rows and interconnecting adjacent strut rows , at least some of the plurality of connectors defining a flexible hinge portion ; wherein the lengths of the interstices between adjacent strut rows vary along the length of the expandable tubular framework in the expanded state; wherein the plurality of connectors extends radially outward beyond an outer diameter of the plurality of strut rows in the expanded state; wherein the plurality of connectors is configured to engage a wall of a body lumen in the expanded state to inhibit migration of the endoprosthesis subsequent implanting the endoprosthesis in the body lumen; and a polymeric cover extending along the full length of the expandable tubular framework from the first end to the second end , covering the plurality of strut rows and spanning the interstices between adjacent strut rows , characterized in that in the expanded state, spaces defined between the radially outward extended plurality of connectors and an outer surface of the polymeric cover spanning the interstices , as viewed along the central longitudinal axis, are devoid of the polymeric cover to permit tissue ingrowth around the plurality of connectors . an expandable tubular framework having a first end and a second end defining a length therebetween, and a lumen extending therethrough along a central longitudinal axis, the expandable tubular framework being expandable from a compressed state to an expanded state and including: a plurality of strut rows , wherein adjacent strut rows define interstices therebetween, each interstice having a length along the central longitudinal axis and spacing the adjacent strut rows apart; a plurality of connectors extending across the interstices between adjacent strut rows and interconnecting adjacent strut rows , at least some of the plurality of connectors defining a flexible hinge portion ; a plurality of strut rows , wherein adjacent strut rows define interstices therebetween, each interstice having a length along the central longitudinal axis and spacing the adjacent strut rows apart; a plurality of connectors extending across the interstices between adjacent strut rows and interconnecting adjacent strut rows , at least some of the plurality of connectors defining a flexible hinge portion ; wherein the lengths of the interstices between adjacent strut rows vary along the length of the expandable tubular framework in the expanded state; wherein the plurality of connectors extends radially outward beyond an outer diameter of the plurality of strut rows in the expanded state; wherein the plurality of connectors is configured to engage a wall of a body lumen in the expanded state to inhibit migration of the endoprosthesis subsequent implanting the endoprosthesis in the body lumen; and a polymeric cover extending along the full length of the expandable tubular framework from the first end to the second end , covering the plurality of strut rows and spanning the interstices between adjacent strut rows , characterized in that in the expanded state, spaces defined between the radially outward extended plurality of connectors and an outer surface of the polymeric cover spanning the interstices , as viewed along the central longitudinal axis, are devoid of the polymeric cover to permit tissue ingrowth around the plurality of connectors . <EOS>