Abstract: Disclosed is a determination device for the size of a cutting block. The determination device includes the connection device mounted to a tibia to be placed at a top surface thereof along an upper line of a predetermined flexion gap; a body including a slide groove on a central portion of a front surface thereof, a bent part on an upper portion thereof to be placed at a precut anterior cortex of a femur, and a plurality of graduations provided on the body to determine the size of the cutting block; a slider to be slidably engaged with the slide groove of the body and including an indicating line on an upper portion thereof, and a guide to be assembled with the slider and come into surface contact with the top surface of the connection device at a lower portion thereof.

Abstract: The present invention discloses a device for aligning and guiding a femoral resection guide and a femoral implant impactor, whereby the femoral resection guide and the femoral implant impactor are aligned perpendicular to the mechanical axes of the coronal plane and sagittal plane of the femur at the bottom end of the femur, and are guided so as to be rotation-aligned and mounted in parallel with a condyle axis connecting the inner condyle and outer condyle.

Abstract: The present invention discloses a tibia impacter provided with an alignment guide function that helps an artificial tibia implant to be adjusted to the level condition when bone cement is applied to the top surface of the cut tibia and an artificial tibia implant is driven in and fixed. The tibia impacter comprises a guide bar which is installed vertically on one side of the tibia impacter for comparison with the mechanical axis of the tibia to compare the mechanical axis of the tibia and the guide bar, so that the level condition of the artificial tibia implant mounted on the top surface of tibia can be confirmed.

Abstract: A tibia cutter, which enables the artificial tibia insert to be installed at the exact position by indicating information about the fitting position of the artificial tibia insert on the cut section of the tibia, is disclosed. The tibia cutter comprises a body including a bone cutting slot horizontally formed at the upper portion of the body, a plurality of pinholes horizontally formed under the bone cutting slot of the body, an alignment groove vertically formed at the rear side of the body, and an indication hole formed forward and backward along the bone cutting slot in said bone cutting slot; and an indication pin which is inserted into said indication hole to indicate information about the fitting position of artificial tibia insert on the cut section of the tibia that is cut by electric saw.

Abstract: An alignment and connection device by which it is possible to follow the determined extension gap minutely and align the femur cutter and tibia cutter three-dimensionally is disclosed. This alignment and connection device comprises a fixation part in which a guide slot is formed in front center and a through hole for a locking pin to be inserted is formed on the side of the guide slot and an indicating line is marked thereon; a supporting part which is assembled slidably to the guide slot of the fixation part, and having a slider marked with specifications corresponding to the extension gap determined and a lug portion inserted into the cutting groove of the femur cutter; and a fixing means for fixing the supporting part to the fixation part.

Abstract: A femur alignment guide device, which can be mounted on the femur vertically to the mechanical axis based only on the mechanical axis without measuring the angles between the mechanical and anatomical axes which are different according to the photographing angle, is disclosed. The femur alignment guide device comprises a body having a pair of mounting holes formed transversely for mounting a femur front bone cutter and a femur bottom end cutter, and a pair of pinholes formed vertically for inserting the pin driven into the femur bottom end; and a pair of top surface adjusting means mounted on both sides of the body so as to make ascent and descent possible.

Abstract: Disclosed is a determination device for the size of a cutting block. The determination device includes the connection device mounted to a tibia to be placed at a top surface thereof along an upper line of a predetermined flexion gap; a body including a slide groove on a central portion of a front surface thereof, a bent part on an upper portion thereof to be placed at a precut anterior cortex of a femur, and a plurality of graduations provided on the body to determine the size of the cutting block; a slider to be slidably engaged with the slide groove of the body and including an indicating line on an upper portion thereof, and a guide to be assembled with the slider and come into surface contact with the top surface of the connection device at a lower portion thereof.