Surgical instrumentation and methods of use for implanting a prosthesis

Abstract

A tissue resection guide for use with a datum includes a base releasably engagable with the datum. The tissue resection guide has a first frame fixed relative to the base and the first frame has at least one integral first guide path that is sized and configured to at least partially capture and guide a first tissue resection tool relative to the first frame.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application claims the benefit of U.S. Provisional Patent Application No. 61 / 133,186 filed Jun. 25, 2008 and entitled “Instrumentation for Prosthesis” and U.S. Provisional Patent Application No. 61 / 178,343 filed May 14, 2009 and entitled “Surgical Instrumentation and Methods of Use for Implanting an Endoprothesis” both of which are incorporated by reference herein in their entirety.BACKGROUND OF THE INVENTION[0002]The present invention generally relates to surgical instrumentation and methods for such procedures such as, for example, a total joint replacement within a patient.[0003]Various endoprosthetic devices are known for repairing or replacing joints in a patient. Specifically, it is known to use an endoprosthesis to replace a damaged ankle joint. The ankle joint is a comparatively small joint relative to the weight bearing and torque the joint must withstand. These factors have made the design of total ankle joint replacements ...

AI Technical Summary

Benefits of technology

[0006]In one embodiment, there is a distractor that includes a handle that is adjustable between an insertion position and a distraction position, a datum securement that is attached to the handle and releasably engagable with a datum, and a tissue engaging portion that is attached to the handle and movable with respect to the datum securement as the handle is adjusted between the insertion position and the distraction position. In another embodiment, the handle includes a first handle portion that extends from the datum securement and a second handle portion that extends from the tissue engaging portion. In another embodiment the second handle portion is pivotable with respect to the first handle portion. In another embodiment, the first handle portion is releasably attached to the second handle portion. In a further embodiment, the first handle portion is generally planar from the distal end to the proximal end. In another embodiment, the second handle has an angular orientation between a distal end and a proximal end. In another embodiment, the second handle portion further comprises a grip portion opposite a tissue engaging portion and an inflection point between the tissue engaging portion and the grip portion wherein the second handle portion is attachable to the first handle portion proximate the inflection point. In another embodiment, the second handle portion includes a distal portion that is generally parallel the first handle portion when the distractor is in the insertion position and is not generally parallel to the first handle portion when the distractor is i...

Problems solved by technology

These factors have made the design of total ankle joint replacements technically challenging.

Total ankle replacement has been investigated since the 1970's with initially promising results, but the procedure was essentially abandoned in the 1980's due to a high long-term failure rate, both in terms of pain control and improved function.

However, researchers have continued to investigate new designs, which can be broadly subdivided into constrained and unconstrained designs.

Constrained designs offer the advantage of greater stability, but with decreased mobility and increased stress at the bone implant interface, potentially leading to a greater risk of early loosening and failure.

Unconstrained designs provide improved range of motion in multiple planes, but at the expense of stability.

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