Structure prepared from a vertebral body
A structure is prepared from a vertebral body having a cortical wall enclosing a cancellous bone volume. The structure comprises a cavity formed within the cancellous bone volume by expansion of an expandable device, and a volume of bone filling material occupying the cavity.
1 . A structure prepared from a vertebral body having a cortical wall-enclosing a cancellous bone volume, comprising
a cavity formed within the cancellous bone volume by expansion of an expandable device, and
a volume of bone filling material occupying the cavity.
2 . A structure according to claim 1
wherein the expandable device expands by inflation.
3 . A structure according to claim 1
wherein the expandable device comprises a balloon.
4 . A structure according to claim 1
wherein the bone filling material comprises bone cement.
5 . A structure prepared from a fractured vertebral body having a cortical wall enclosing a cancellous bone volume and having at least one cortical plate that is depressed due to fracture, the structure comprising
a fractured cortical plate that has been moved toward a desired anatomic position by expansion of an expandable device within the cancellous bone volume, and a volume of bone filling material occupying the cancellous bone volume.
6 . A structure according to claim 5
wherein the expandable device expands by inflation.
7 . A structure according to claim 5
wherein the expandable device comprises a balloon.
8 . A structure according to claim 5
wherein the bone filling material comprises
bone cement.
9 . A structure prepared from a fractured vertebral body having a cortical wall enclosing a cancellous bone volume and having at least one cortical plate that is depressed due to fracture, the structure comprising
a cavity formed within the cancellous bone volume by expansion of an expandable device,
a fractured cortical plate that has been moved toward a desired anatomic position by the expansion of an expandable device within the cancellous bone volume, and a volume of bone filling material occupying the cavity.
10 . A structure according to claim 9
wherein the expandable device expands by inflation.
11 . A structure according to claim 9
wherein the expandable device comprises a balloon.
12 . A structure according to claim 9
wherein the bone filling material comprises bone cement.
13 . A structure prepared from a vertebral body having a cortical wall enclosing a cancellous bone volume, comprising
a cavity formed within the cancellous bone volume by expansion of an expandable device having a predefined dimension when substantially expanded that is less than the cancellous bone volume, and
a volume of bone filling material occupying the cavity.
14 . A structure according to claim 13
wherein the expandable device expands by inflation.
15 . A structure according to claim 13
wherein the expandable device comprises a balloon.
16 . A structure according to claim 13
wherein the bone filling material comprises bone cement.
17 . A structure prepared from a vertebral body having a cortical wall enclosing a cancellous bone volume, comprising
a first region of cancellous bone volume that has been substantially compressed by expansion of an expandable device having a predefined dimension when substantially expanded that is less than the cancellous bone volume,
a second region of cancellous bone that remains substantially uncompressed by the expandable body, and
a volume of bone filling material occupying the cancellous bone volume.
18 . A structure according to claim 17
wherein the expandable device expands by inflation.
19 . A structure according to claim 17
wherein the expandable device comprises a balloon.
20 . A structure according to claim 17
wherein the bone filling material comprises bone cement.
21 . A structure prepared from a vertebral body having a cortical wall enclosing a cancellous bone volume, comprising
a cavity formed by expansion of an expandable device having a predefined dimension when substantially expanded that is less than the cancellous bone volume to create adjacent the cavity a first region of the cancellous bone volume that has been substantially compressed,
a second region of cancellous bone that remains substantially uncompressed by the expandable body, and
a volume of bone filling material occupying the cavity.
22 . A structure according to claim 21
wherein the expandable device expands by inflation.
23 . A structure according to claim 21
wherein the expandable device comprises a balloon.
24 . A structure according to claim 21
wherein the bone filling material comprises bone cement.