Table 3.

PostureRay® Comparison Evaluation of Normal, Pre-Treatment, Post-Treatment, and 1-Year Follow-Up Values for Cervical, Thoracic, Lumbar, and Stitched Full Spine Radiographs

Table 3 shows comparisons of normal, pre-treatment, post-treatment, and 1-year follow-up radiograph values of cervical, thoracic and lumbar absolute rotational angles (ARA) of designated vertebrae, Tz of cervical, thoracic, lumbar, and full spine regions, the translations in the z-axis (Tz) of thoracic and lumbosacral spondylolistheses, ARAs of curve reversals in cervical, thoracic, and lumbar spine regions, and sacral base angle (SBA).

Measurements	Normal Values	Pre-Treatment Radiograph Values	Post-Treatment Radiograph Values	1-Year Follow-Up Radiograph Values
Cervical Spine
ARA C2–C7	−42.0°	−9.0°	−22.7°	−21.7°
Tz C2–C7	0.0 mm	21.8 mm	20.8 mm	19.0 mm
ARA C2–C5	−26.0°	5.3°	−10.3°	−9.3°
Thoracic Spine
ARA T1–T12	44.0°	20.9°	42.0°	40.2°
Tz T1–T12	0.0 mm	36.4 mm	1.9 mm	3.8 mm
ARA T9–T12	9.0°	−4.8°	5.2°	4.3°
Tz T9–T10	0.0 mm	−5.3 mm	−0.1 mm	0.0 mm
Lumbar Spine
ARA L1–L5	−40.0°	−23.7°	−34.6°	−34.2°
Tz T12-S1	0.0 mm	−11.8 mm	−19.3 mm	−16.6 mm
ARA T12-L2	−6.0°	8.6°	−2.7°	−2.8°
Tz L5-S1	0.0 mm	−6.8 mm	−0.9 mm	−1.0 mm
SBA	40.0°	21.5°	29.6°	28.3°
Full Spine
Tz C1-S1	0.0 mm	40.1 mm	4.7 mm	3.7 mm
Tz C7 cen-S1 ps	0.0 mm	22.7 mm	−3.5 mm	−5.5 mm
Tz T1-S1 pi	0.0 mm	19.6 mm	−2.5 mm	−3.5 mm

ARA = Absolute Rotational Angle between designated vertebrae

Tz = Translation in the z-axis

SBA = Sacral Base Angle

cen = Centroid of a vertebra

ps = posterior superior aspect of a vertebra

pi = posterior inferior aspect of a vertebra