SURGERY NAVIGATION APPARATUS AND METHOD FOR TOTAL KNEE ARTHROPLASTY

摘要

PURPOSE: A surgery navigation apparatus and a method for total knee arthoplasty are provided to easily figure out whether the surgery will succeed or not by displaying a predicted joint angle after the arthoplasty. CONSTITUTION: Multiple cameras(10) take pictures of markers attached on a femur and a cnemis of a patient. A marker location information acquisition part(20) produces a 3D location coordinate value of each of the markers. An axis completion part(30) completes a virtual anatomical axis generated based on anatomical characters of the femur and the cnemis of the patient. A cross section prediction part(50) predicts a cross section of a knee joint of the patient. A cut auxiliary equipment location calculation part(60) calculates a location of the cross section that is controlled according to movement of a cut auxiliary equipment. [Reference numerals] (10) Camera; (20) Marker location information acquisition part; (32) Coxa rotation center coordinate extraction part; (34) Thighbone and tibia coordinate acquisition part; (36) Joint surface coordinate acquisition part; (38) Axis reproduction part; (40) Knee joint angle calculation part; (50) Cross section prediction part; (60) Cut auxiliary equipment location calculation part; (70) Knee angle change determination part; (80) Display part; (AA) Artificial joint insertion completion signal