METHODS AND APPARATUS FOR BONE RESHAPING
Systems and methods for the reshaping of bone are provided. A bone reshaping device includes at least a first attachment point and a second attachment point. The first attachment point is attached to a first site on an unmodified bone. The second attachment point is attached to a second site on the unmodified bone. The unmodified bone may have a deformity to be corrected through the reshaping of the unmodified bone. When the unmodified bone has a deformity to be corrected, at least a portion of the deformity is in between the first and the second attachment points. The bone reshaping device is actuated to impart a bone reshaping force on the bone. The bone reshaping force may be compressive, distractive, and/or torsional.
1 . An apparatus configured for reshaping a bone without creating an osteotomy, wherein the apparatus is configured to impart a bone reshaping force on the bone, the apparatus comprising:
a first attachment point configured to be attached to a first location on the bone and to apply the bone reshaping force onto the bone;
a second attachment point configured to be attached to a second location on the bone and to apply the bone reshaping force onto the bone; and
an adjustable portion, wherein the adjustable portion is configured to be noninvasively actuated to generate the bone reshaping force.
2 . A method of reshaping a bone, comprising the steps of:
providing a bone reshaping device, having a first attachment point and a second attachment point;
attaching the first attachment point to a first site on an unmodified bone having a deformity; and
attaching the second attachment point to a second site on the unmodified bone, wherein at least a portion of the deformity is in between the first and second attachment points;
wherein the bone reshaping device is actuatable to impart a bone reshaping force on the bone.
3 . A method of reshaping a bone as in claim 2 , wherein the bone reshaping force comprises at least an axially compressive force component on the bone.
4 . A method of reshaping a bone as in claim 2 , wherein the bone reshaping force comprises at least an axial tension force component on the bone.
5 . A method of reshaping a bone as in claim 2 , wherein the bone reshaping force comprises at least a torsional force on the bone.
6 . A method of reshaping a bone as in claim 2 , wherein the bone reshaping force comprises at least a lateral bending force on the bone.
7 . A method of reshaping a bone as in claim 2 , wherein the attaching the first attachment point step comprises advancing a bone screw into cancellous bone.
8 . A method of reshaping a bone as in claim 2 , wherein the attaching the first attachment point step comprises attaching a clamp to the bone.
9 . A method of reducing a curvature in a bone, comprising:
identifying a bone having a longitudinal curvature, the curvature having a convex side and a concave side; and
attaching a bone reshaping device to the bone, wherein the bone reshaping device is configured to apply a force to the bone, without performing an osteotomy, to gradually straighten the bone.
10 . A method of reducing a curvature in a bone as in claim 9 , wherein the force is an axial extension force applied to the concave side of the bone.
11 . A method of reducing a curvature in a bone as in claim 9 , wherein the force is an axial compression force applied to the convex side of the bone.
12 . A method of reducing a curvature in a bone as in claim 9 , wherein the applying a force step comprises activating the bone reshaping device from a wireless controller outside of the patient.
13 . A method of changing the shape of a long bone without creating an osteotomy, comprising;
providing at least one bone reshaping device having a first end with a first attachment point and a second end with a second attachment point, wherein the bone reshaping device is configured to create at least one force between the first end and the second end; and
implanting the at least one bone reshaping device completely under the skin of a subject, wherein the implanting comprises;
attaching the first attachment point at a first location on the long bone; and
attaching the second attachment point at a second location on the long bone.
14 . A method of changing the shape of a long bone without creating an osteotomy as in claim 13 , wherein the at least one bone reshaping device is remotely actuatable to create the at least one force between the first end and the second end.
15 . A method of changing the shape of a long bone without creating an osteotomy as in claim 13 , wherein attaching the first attachment point comprises advancing a bone screw into the first location on the long bone.
16 . A method of changing the shape of a long bone without creating an osteotomy as in claim 13 , wherein the at least one force comprises at least one of a distractive force and a torsional force.
17 . A method of changing the shape of a long bone without creating an osteotomy as in claim 16 , wherein the distractive force is in the range of about 90-110 lbs.
18 . A method of changing the shape of a long bone without creating an osteotomy as in claim 16 , wherein the torsional force is in the range of about 25-75 in·lbs.
19 . A method of changing the shape of a long bone without creating an osteotomy as in claim 13 , wherein the bone reshaping device is implanted for at least about one month.