METHOD FOR MAKING CADAVER FEMUR RADIOGRAPHY Russian patent published in 2001 - IPC

FIELD: medicine. SUBSTANCE: method involves using a device manufactured from transparent polystyrene glass pieces of different thickness. The device has quadrate base which lower plane has four legs. The upper base plane is divided into two halves with a groove having one hole in the center and one in peripheral parts for fixing fastening upright manufactured as rectangle having on each of its planes a longitudinal straight line dividing the planes into two halves. One hole is available in the center and one on the edges on the lower end face facet for making fixation in the base slot. One hole is in the center of the upper end face facet for being attachable to it by means of fixing handle of the movable detachable circle having coordinate grid with 10 mm cell step on both X- and Y- axes. Montage holes are positioned in the points of intersection of coordinate grid lines. Cross-shaped fastening hole has rounded slits being 20 mm long and 5 mm wide. Circular limb has four sectors, each 90 deg large. One of them has discrete step of 1 deg with ticks spaced every 10 deg digital marks pointing to 0, 30,60 and 90 deg positions, guiding axes and axial handle placed in the middle of the circular limbs. The handle is usable for resetting and rearranging the limbs in the montage holes of the coordinate grid holes of the movable detachable circle. The cadaver femur under study is fixed in the device so that its posterior surface has tight contact with the upright and end surface of the condyles is engaged with the device base. Then the circular limb is set into one of the holes of the movable detachable circle so that the long axis of the circular limb strictly follows the longitudinal femur neck and head axis. Femur X-ray picture is taken in the top-down direction. Then, transcondylar line is drawn through femur condyles on the X-ray picture produced. The real femur neck head anteversion angle formed in intersection of the transcondylar line and long circular limb axis contour is measured. EFFECT: high accuracy in measuring the angles. 13 dwg