IMAGING AND PLANNING DEVICE FOR LIGAMENT GRAFT PLACEMENT

摘要

Device for realtime computerized in-situ planning and guidance of ligament graft placement comprising: A) two rigid reference bodies (4; 5) with at lea st three markers (6) each and screws (7) or pins to attach the reference bodies (4; 5) to the femur (8) respectively to the tibia (9); B) a pointer (10) wit h at least three markers (6); C) an endoscope (11); D) a computer (3); E) a position measurement device (14) connected to the computer (3) in order to determine the position of the markers (6); F) an X-ray source (1) that may b e used pre-operatively or intra-operatively; G) an X-ray receiver (2) for gathering medical image data which is transferred to the computer (3) either directly in numerical format or by scanning the radiographic film into the computer (3); and H) an A-mode ultrasound device (13) which is connected to the computer (3) and provided with at least three markers (6).