Arrangement for fixing a knee-joint in defined positions and for

Surgery – Instruments – Orthopedic instrumentation

Patent

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Details

606 88, 128882, 269322, A61F 504, A61F 537, A61G 1300

Patent

active

050079123

ABSTRACT:
The invention relates to an arrangement for fixing a knee-joint in connection with prosthetic surgery. The arrangement provides for a fixing of the operated knee-joint relative to a reference, which is represented by the operating table. The purpose is to positionally control, with high precision, measuring and cutting instruments in the prosthesis operation. The arrangement includes an alignment instrument (11) for aligning and fixing both the femur (66) and tibia (21) relative to a reference axis in both the frontal plane and the sagittal plane, which alignment instrument comprises a fixture (4) for the trunk. The fixture is adjustable and can be locked in selected positions by displacement transverse to the reference axis. The alignment instrument also comprises a further fixture for fixing the knee-joint (20, 22) and tibia (21). The arrangement moreover comprises a positional control unit for positional control of measuring and cutting instruments. This permits a controlled, precise and delicate bone-cutting, which creates the conditions for the desired positioning and exact fitting between prosthesis bed and prosthesis.

REFERENCES:
patent: 2057992 (1936-10-01), Wiruth
patent: 3625210 (1971-12-01), Mikkelson
patent: 4299213 (1981-11-01), Violet
patent: 4373709 (1983-02-01), Whitt
patent: 4407277 (1983-10-01), Ellison
patent: 4457302 (1984-07-01), Caspari
patent: 4549540 (1985-10-01), Caspari

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