Osteotomy Devices for Knee Replacement Surgery

Abstract

The invention provides a bone-cutting device used for knee joint replacement surgery. The bone-cutting device comprises a distal femur bone-cutting part, a base and a guide component, wherein the distal femur bone-cutting part comprises a connection part; the base comprises a base main body, and a first hole is formed in the base main body; the guide component comprises a first end used for beingmovably connected with the connection part and a second end used for insertion into the first hole; the base further comprises a base plate for contacting the bone-cutting end surface of the proximaltibia, and a through hole used for insertion of a force wire rod is arranged at the joint of the base main body and the base plate. For the bone-cutting device used for the knee joint replacement surgery provided by the invention, during the surgical process, under the condition that the femur medullary cavity is not damaged and the limitation of the shape of the femur medullary cavity of a patient is eliminated, the extramedullary alignment of the femur-side force line is realized, thus the postoperative rehabilitation time of the patient is shortened, and the risk of embolism caused to the patient can be avoided.

Description

technical field [0001] The invention relates to the technical field of medical instruments, in particular to an osteotomy device used for knee joint replacement surgery. Background technique [0002] For knee joint pain, instability, deformity, etc., when conservative treatment is ineffective or the effect is not significant, artificial knee replacement surgery has become a common operation to solve such severe knee joint lesions. In current knee replacement surgery, osteotomy of the femur and tibia is required to form a prosthetic mounting bone surface that matches the appropriate prosthesis, thereby ensuring the restoration of the alignment of the lower extremity after the prosthesis, correcting the deformity and Relieve pain. [0003] In knee arthroplasty, femoral osteotomy and alignment techniques are usually used to insert the femoral intramedullary rod into the femoral medullary cavity to determine the position of the anatomical axis, and then use the valgus angle dev...

AI Technical Summary

Problems solved by technology

The osteotomy device used in this femoral osteotomy and alignment technique must insert the intramedullary rod into the femoral medullary cavity. However, if the intramedullary rod is too short, it will affect the accuracy of the alignment, and if the intramedullary rod is too long, it will cause the rod to pass through the femoral medullary cavity. Attenuate

Therefore, this osteotomy device is difficult to implement in the case of patients with narrow or curved femoral medullary canal, and it will cause damage to the femoral medullary canal, making the postoperative recovery time longer for patients, and has the risk of embolism in patients

Images