An auxiliary instrument for the preparation of the insertion of a knee prosthesis

摘要

The invention concerns ancillary equipment for preparing the setting of a knee prosthesis, characterised in that it comprises a plate (6) not thicker than a tibial plate of the knee prosthesis, and to which is fixed a rod (8) along an inclination suitable for obtaining a femoral interval orthogonal to the mechanical axis of the lower member; this plate is provided with a block of variable thickness, and is designed to be urged to rest on a tibial cutting plane (4) after insertion of its rod in the medullary canal of the thigh bone to obtain ligamentary equilibrium and for the ulterior lengthwise and flectional adjustment of the spaces between the proximal cut of the tibia (3) and the distal and posterior cuts of the thigh bone (2); this ancillary equipment eliminates the need for a femoral cut to obtain ligamentary equilibrium, and enables the cutting of the distal end of the thigh bone with a single cut.