Importance

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Abstract

A bone attachment assembly for a remaining portion of a long bone diaphysis following resection is provided. The assembly includes a main body, means for anchoring the device with respect to the remaining bone portion, such as an anchor body, and means for attaching the main body to the means for anchoring. The means for attaching the main body may preferably be in the form of one or more washer springs retained upon a connecting rod attached to the means for anchoring. The assembly may be connected to an orthopedic appliance, an interposed orthopedic appliance connected to a second bone attachment assembly, or a transcutaneous bar for attaching an external appliance. A reaming device for creating an intramedullary cavity, a guide device for guiding an aperture-forming procedure in a remaining bone portion, and a milling device for shaping an interface surface of the bone in a preselected geometry are also provided. In the method of the present invention, a cavity is created within a remaining bone portion using the reaming device. At least one aperture is created using the guide device, and the bone surface is milled to a preselected geometry using the milling device. The above components are then assembled together within the cavity to form the device of the present invention. The device may then be connected to other devices as stated above. A bone attachment assembly may also be provided having a compliant section integrally disposed that is operable for being converted to a preselected condition of expansion prior to or following implantation.

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First Claim