DEVICE FOR MEASURING MACERATED AND FRESH CADAVER FEMURS NECK ANTEVERSION AND RETROVERSION ANGLE Russian patent published in 2001 - IPC

FIELD: medical engineering. SUBSTANCE: device is manufactured from transparent polystyrene glass pieces of different thickness. The device has quadrate base. Lower plane of the base has four legs. The upper base plane is divided into two halves with a groove with a slot running in perpendicular to the groove and dividing the upper base plane into two equal halves. The slot has 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. Two fixing belts are attached to the lateral end face facets. One hole is available in the center on the edges on the lower end face facet for making fixation in the slot and one hole is in the center of the upper end face facet for being attachable to it by means of fixing handle. The device also has movable detachable circle having coordinate grid with 10 mm cell step on both X- and Y- axes, montage holes positioned at the points of intersection of coordinate grid lines, cross-shaped fastening hole having rounded slits being 20 mm long and 5 mm wide for shifting the movable circle relative to the upper end face facet of the fastening upright and compensating 10 mm long grid cell step. The device has two circular limbs having 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. EFFECT: high accuracy in measuring the angles. 13 dwg