Bits for total knee arthroplasty WITH RETENTION posterior cruciate ligament

摘要

The invention relates to medicine, in particular to traumatology and orthopedics, and can be used to protect the posterior cruciate ligament in the place of attachment to the tibia in total knee arthroplasty. Chisel for total knee replacement with preservation of the posterior cruciate ligament, having a sharpened blade length 12-14 mm, 30-35 mm, the web being bent in the center at an angle of 90 °, at the base of the web perpendicular to its plane is defender. The bit has a cylindrical handle length of 100-120 mm, 10-12 mm in diameter. After exposure of the tibial condyles, this bit is located on the plateau of the tibia, and the blade angle is directed forward and side angle on both sides cover the area of ​​the tibial attachment of the posterior cruciate ligament. The chisel is hammered into the plateau bone perpendicular to the plane to the metal protector. Then, without removing the drill bit, performed sawdust tibia, while its fabric protects from blade attachment region of the posterior cruciate ligament. Chisel can effectively isolate and protect the posterior cruciate ligament in total knee arthroplasty.