Method and apparatus for definitive cutting of a femur

Details Method and apparatus for definitive cutting of a femur Method and apparatus for definitive cutting of a femur

1992-03-13

1993-08-10

Hafer, Robert A.

Surgery

Instruments

Orthopedic instrumentation

606 86, A61B 1700, A61F 500

Patent

active

052344320

ABSTRACT:
Method and apparatus for definitive cutting of the proximal end of a femur prior to cementing in a prosthesis. A special stem is temporarily inserted into the principal cavity within the femur to act as a support and guide for cutters. Provision is made within the proximal end of the stem for positioning of a pair of spindles which are successively used to make two precision cuttings of the upper surface of the intertrochanteric area of the bone by use of a rotational cutter. The cutter is first temporarily rotationally positioned on a first one of the spindles and is rotated thereon while the cutting head of the cutter is in contact with the area of the bone to be cut. The cutter is then transferred to the other spindle for rotation thereon while the cutting head of the cutter is in contact with another portion of the bone to be cut. Thereafter, the rotational cutter is removed and a rectilinear cutter is positioned on the stem using one of the spindles and another spindle substituted for the remaining original spindle, thereby providing a rigid support for the cutter that performs the rectilinear cutting.

REFERENCES:
patent: 4357716 (1982-11-01), Brown
patent: 4364389 (1982-12-01), Keller
patent: 4601289 (1986-07-01), Chiarizzo
patent: 4718909 (1988-01-01), Brown
patent: 4834080 (1989-05-01), Brown
patent: 4921493 (1990-05-01), Webb
patent: 4963155 (1990-10-01), Lazzeri
patent: 5037425 (1991-08-01), Brown
patent: 5047061 (1991-09-01), Brown

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