Navigation device for total knee arthroplasty of knee fusion

Abstract

The invention provides a navigation device for total knee arthroplasty of knee fusion. The navigation device comprises an osteotomy guide plate; a thighbone osteotomy slot, a wedge-shaped osteotomy slot and a tibia osteotomy slot which penetrate through the guide plate are formed in the osteotomy guide plate sequentially from top to bottom; the osteotomy guide plate is provided with a verification hole and a verification face; the verification surface is used for extramedullary observation and verification of an osteotomy surface; a metal nail is put in the verification holes and is used for verifying the osteotomy surface in a perspective view field; fastening via holes are formed in each of the upper end and the lower end of the osteotomy guide plate; and the fastening via holes are used for screws penetrate through to be fixed to a joint. According to the navigation device, whether the guide plate is in a horizontal state or not is observed through the verification surface, thereby judging whether the guide plate is consistent with an actual desired osteotomy direction or not; the Kirschner wire is put in the verification hole, and whether the Kirschner wire is consistent with a designed osteotomy direction or not can be observed in an operation, thereby implementing a design conception of intramedullary design and extramedullary verification; the guide plate can be accurately placed, and navigation is provided for osteotomy operation, thus guaranteeing the osteotomy accuracy.

Description

technical field [0001] The invention relates to the technical field of medical devices, in particular to a navigation device for fusion knee replacement for total knee joint replacement. Background technique [0002] With the acceleration of population aging, the prevalence rate of osteoarthritis is increasing rapidly, and the prevalence rate of the community population over 60 years old can reach 60.1%. With the gradual development of OA disease to the end stage, total knee arthroplasty ( total kneeanhroplasty (TKA) has become the most reliable and effective treatment. However, the traditional TKA surgical tools will appear in many operations such as the measurement of the line of force of the lower limbs, the selection of the osteotomy angle and the amount of osteotomy, the selection of the size of the prosthesis, the determination of the placement angle, and the balance of soft tissues such as joint capsules and ligaments around the joints. question. It may lead to poor...

AI Technical Summary

Problems solved by technology

[0004] The present invention proposes a navigation device for fusion knee total knee replacement, which adopts a comprehensive method of intramedullary design and extramedullary verification to make the osteotomy more accurate, and the quality of the operation is significantly improved, so as to solve the problem that the existing technology only has guide plate guidance and no verification ability. The poor accuracy of osteotomy affects the quality of surgery

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