Femoral osteotomy guide assembly
First Claim
1. An osteotomy guide assembly for femoral neck osteotomy comprising a means for attaching the assembly to the proximal portion of a femur, a transverse support bar extending from said attachment means and a saw guide means which is attached to the support bar by a single locking means, and wherein said single locking means provides for positional adjustment of the saw guide means relative to the support bar in at least two different linear directions.
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0 Petitions
Accused Products
Abstract
An osteotomy guide assembly for femoral neck osteotomy includes a saddle locator assembly and a saw guide attachment. The saddle locator assembly includes a barrel-shaped locating device that locates the saddle region of the proximal femur. The barrel further includes a transverse support bar extending from the barrel. The barrel is positioned over an intramedullary shaft which is temporarily positioned in and extends from the medullary canal of the femur. A saw guide is used in conjunction with the saddle locator assembly. The saw guide is attached to the support bar by a single locking means which provides for positional adjustment of the saw guide relative to the support bar in two directions, including adjustment in the anterior-posterior direction along the transverse support bar and axially along the femur via a post which extends from the saw guide.
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Citations
31 Claims
- 1. An osteotomy guide assembly for femoral neck osteotomy comprising a means for attaching the assembly to the proximal portion of a femur, a transverse support bar extending from said attachment means and a saw guide means which is attached to the support bar by a single locking means, and wherein said single locking means provides for positional adjustment of the saw guide means relative to the support bar in at least two different linear directions.
- 22. A saw guide for femoral neck osteotomy wherein the saw guide means includes a substantially flat plate having a shape which substantially corresponds to at least a portion of an anterior/posterior view of a hip prosthesis and wherein the plate includes a lateral side and a medial side and wherein the plate includes a main body portion and a neck portion separated from the main body portion by a cutting slot, and wherein the neck portion is attached to the main body portion by a connecting leg which extends outwardly from the medial side of the plate to interconnect the main body portion and neck portion and wherein the connecting leg forms an opening between the leg and main body portion and wherein the opening opens into the cutting slot.
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26. A saw guide for femoral neck osteotomy wherein the saw guide includes a substantially flat plate and wherein the plate includes a main body portion and a further portion separated from the main body portion by a cutting slot, and wherein the further portion is attached to the main body portion by a connecting leg which extends outwardly from the plate to interconnect the main body portion and the further portion and wherein the connecting leg forms an opening between the leg and main body portion and wherein the opening opens into the cutting slot.
- 27. An osteotomy guide assembly for femoral neck osteotomy comprising a means for attaching the assembly to the proximal portion of a femur, a transverse support bar extending from said attachment means and a saw guide means which is attached to the support bar, and wherein the means for attaching the assembly to the proximal portion of the femur includes an elongated barrel which is attached to the transverse support bar, said barrel including a channel therethrough, the osteotomy guide also including an elongated intramedullary shaft means which extends partially into the medullary canal of the femur and partially protrudes from the proximal end of the femur such that the barrel of the osteotomy guide fits over the protruding portion of the intramedullary shaft means for stabilizing and locating the barrel thereon and wherein the elongated barrel includes a first end and a second end and wherein the barrel and extending support bar form a saddle locator means for locating the guide assembly in relation to the saddle portion of the femur and wherein the saddle locator means includes an angled tip at the first end of the barrel, and wherein the tip is adapted to contact the femur at the saddle portion of the femur and as such, the tip angles downwardly away from the greater trochanter of the femur when the guide assembly is attached thereto.
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30. A method for removal of the neck and head of a femur, comprising the steps of:
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(a) forming a longitudinal hole in the femur from the proximal end thereof that is aligned with the medullary canal of the femur; (b) providing an elongated intramedullary shaft which extends partially into the hole in the medullary canal and partially protrudes from the proximal end of the femur; (c) attaching a hollow barrel of an osteotomy guide to the protruding portion of the intramedullary shaft; (d) adjusting the position of a saw guide along a support bar which extends transversely from the barrel by adjusting the position in a first direction along the support bar and in second direction axially along the longitudinal direction of the femur and then securely locking this desired position of the saw guide in both directions relative to the support bar with a single locking means; and (e) guiding a cutting instrument against the femoral neck while the instrument is guided along a cutting surface or slot in the saw guide. - View Dependent Claims (31)
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Specification