Femoral guide for knee surgery

Abstract

A joint replacement kit for use in a joint replacement procedure replacing a portion of a body joint. The kit includes a cutting guide and a trial component wherein the cutting guide and trial component are packaged together. There is also provided a method for replacing a portion of a body joint. The method includes providing a joint replacement kit having a cutting guide and a trial component, positioning the cutting guide against an end portion of a bone, cutting the end portion of the bone with a cutting instrument, positioning the trial component to the cut end portion of the bone, and disposing of the cutting guide and trial component.

Description

CROSS-REFERENCE TO RELATED APPLICATIONS[0001]This application is a continuation of U.S. patent application Ser. No. 10 / 888,783 filed Jul. 9, 2004, which is a continuation of U.S. patent application Ser. No. 10 / 191,751 filed Jul. 8, 2002 (now U.S. Pat. No. 7,104,996); which is a continuation-in-part of each of the following: U.S. patent application Ser. No. 09 / 976,396 filed Oct. 11, 2001 (now U.S. Pat. No. 6,770,078); U.S. patent application Ser. No. 09 / 941,185 filed Aug. 28, 2001 (now U.S. Pat. No. 6,702,821); U.S. patent application Ser. No. 09 / 566,070 filed May 5, 2000 (now U.S. Pat. No. 6,575,982); U.S. patent application Ser. No. 09 / 737,380 filed Dec. 15, 2000 (now U.S. Pat. No. 6,503,267); U.S. patent application Ser. No. 09 / 569,020 filed May 11, 2000 (now U.S. Pat. No. 6,423,063); U.S. patent application Ser. No. 09 / 483,676 filed Jan. 14, 2000 (now U.S. Pat. No. 6,468,289); U.S. patent application Ser. No. 09 / 798,870 filed Mar. 1, 2001 (now U.S. Pat. No. 6,503,277); U.S. paten...

AI Technical Summary

Benefits of technology

The patent is about using an endoscope or similar device to examine parts of a patient's body, like the knee, and getting images of them while the patient's leg is still or in motion. These images can help a surgeon conduct surgery more effectively. The patent also describes using transducers to balance ligaments in the knee by measuring tension forces and comparing them between the opposite sides of the joint. This can facilitate a more precise surgery.

Problems solved by technology

This results in the soft tissue in the knee being compressed against the back of the knee joint.

This makes it very difficult to access posterior soft tissue to remove bone spurs (ostified), meniscus, posterior capsule, ligaments in the back of the joint, and / or any residual soft tissue or connective tissue that is blocking further flexion.

Therefore, a surgeon may be very reluctant, or at least very careful, of inserting instruments into the back of the knee joint to remove tissue.

This may result in osteophytes, bone spurs and similar types of posterior soft tissue being left in place.

Moving the everted patella to one side of end portions of the femur and tibia tends to increase the size of the incision which must be made in the knee portion of the patient's leg.

However, the checking of ligament balance by flexing and extending the leg of the patient, ignores rotational balancing of ligaments.

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