Device and method for producing osteotomies
First Claim
1. A method for producing osteotomy in a bone having a width and an angle of deformity, the method comprising the steps of:
- (a) drilling a tunnel through a surface of the bone, such that the tunnel is transverse to a plane in which the angle of deformity is situated;
(b) making an oblique cut partially across the bone, such that the cut is transverse to the plane in which the angle of deformity is situated and at an angle to the tunnel;
(c) securing the bone about the cut;
(d) completing the oblique cut across the bone to form two bone pieces, each including a portion of the tunnel; and
(e) rotating the bone pieces about the tunnel and relative to one another until a desired alignment is achieved.
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Accused Products
Abstract
Devices and methods for producing minimally invasive osteotomies to correct angular deformities of bones in and about the knee are disclosed. The method includes locating a plane in which the angle exhibited by the deformity is situated. An oblique cut is then made along a surface of the bone, such that the cut is transverse to the plane in which the angle is situated. Thereafter, the bone pieces are rotated about the cut relative to one another until a desired alignment between the bone pieces is achieved. To maintain the bone pieces in alignment, a device having an elongated body for extending into a tunnel between the bone pieces is provided. The device also includes a rigid member fixedly positioned at one end of the body. The rigid member is transverse to the body to engage one bone piece. The device further includes a locking mechanism at an opposite end of the body to engage the other bone piece. The device permits the bone pieces to be pulled against one another between the rigid member and the locking mechanism.
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Citations
21 Claims
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1. A method for producing osteotomy in a bone having a width and an angle of deformity, the method comprising the steps of:
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(a) drilling a tunnel through a surface of the bone, such that the tunnel is transverse to a plane in which the angle of deformity is situated; (b) making an oblique cut partially across the bone, such that the cut is transverse to the plane in which the angle of deformity is situated and at an angle to the tunnel; (c) securing the bone about the cut; (d) completing the oblique cut across the bone to form two bone pieces, each including a portion of the tunnel; and (e) rotating the bone pieces about the tunnel and relative to one another until a desired alignment is achieved. - View Dependent Claims (2, 3, 4)
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5. A method for producing osteotomy in a bone having a width and an angle of deformity, the method comprising the steps of:
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(a) providing a pivotable support structure to support the bone in position; (b) positioning the support structure along a surface of the bone parallel to a plane in which the angle of deformity is situated; (c) drilling a tunnel through the bone from the surface along which the structure is positioned, so that the tunnel is through to the plane in which the angle of deformity is situated; (d) forming a oblique cut partially across the bone, so as to intersect the tunnel at an angle; (e) positioning a bone anchor through the tunnel; (f) completing the oblique cut across the bone so that two bone pieces are formed; and (g) pivoting one bone piece about the bone anchor relative to the other bone piece until a desired alignment between the pieces is achieved. - View Dependent Claims (6, 7, 8, 9, 10, 11, 12, 13)
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14. A method for relieving contact pressure between a first bone having an angle of deformity and a second bone, the method comprising the steps of:
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(a) drilling a tunnel through a surface of the first bone, such that the tunnel is transverse to a plane in which the angle is situated; (b) making an oblique cut partially across the first bone on a surface parallel to the tunnel, the cut being at an angle to the tunnel to permit the first bone, when realigned, to reduce the contact pressure between the first bone and the second bone; (c) securing the bone about the oblique cut; (d) determining the amount angular correction needed, so as to bring the contact pressure within a physiologic tolerance; (e) completing the oblique cut across the bone to form two bone pieces, each including a piece of the tunnel; and (f) rotating the bone pieces about the tunnel and relative to one another until a an alignment conforming to the determined angular correction is achieved. - View Dependent Claims (15, 16, 17, 18, 19, 20, 21)
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Specification