Table 8.

Standard Spine Models ±1 and 2 SD calculated from distances of sagittal intersection points C2–T1 (in mm)

Rows in each block: (1) Mean distance of intersections points minus 2 SD plus 1 mm for each level instrumented. (2) Mean distance of intersections points minus 1 SD plus 1 mm for each level instrumented. (3) Mean distance of intersections points plus 1 mm for each level instrumented. (4) Mean distance of intersections points plus 1 SD plus 1 mm for each level instrumented. (5) Mean distance of intersections points plus 2 SD plus 1 mm for each level instrumented. In brackets: Distances of each of five calculated ‘Standard Spine Models’ from one to the next size. A translation mechanism must allow this distance to translate in order to accomodate ATPS in each individual. Same colors, from right above to left down, corresponding to one-, two-, three-, four-, five-, and six-level ‘Standard Spine Models’