Paragraph Number

61

Rotating the screw member 118 about the axis 246 in a first direction 248 (See FIG. 2H) draws the proximal wedge 114 up the ramps 210, 222 and the distal wedge 116 up the ramps 222, 226. Rotating the screw member 118 about the axis 246 in a second direction 250 (See FIG. 2H) drives the proximal wedge 114 down the ramps 210, 222 and the distal wedge 116 down the ramps 222, 226. Movement of the proximal wedge 114 up the ramps 210, 222 causes the upper endplate 110 to move vertically relative to the lower endplate 112 and to separate from the lower endplate 112. Movement of the distal wedge 116 up the ramps 222,226 causes the upper endplate 110 to move vertically relative to the lower endplate 112 and to separate from the lower endplate 112.

Added by DJM 2 2021