Table 2.

PostureRay® Comparison Evaluation of Re-Exam 1 and Re-Exam 2 LL X-rays

Measurement	Normal Values	Xray 2 Values	Xray 3 Values
RRA L1-L2	−5°	−5.4°	−4.8°
RRA L2-L3	−6°	−13.7°	−13.6°
RRA L3-L4	−9°	−18.5°	−17.7°
RRA L4-L5	−19°	−11.6°	−11.3°
RRA L5-S1	−33°	−15.6°	−18.8°
ARA L1-L5	−40°	−49.1°	−47.4°
Sacral Base Angle	40°	33.5°	37.0°
Tz L1-L2	0 mm	−0.5 mm	0.0 mm
Tz L2-L3	0 mm	−0.8 mm	−0.3 mm
Tz L3-L4	0 mm	−0.8 mm	0.3 mm
Tz L4-L5	0 mm	7.1 mm	2.4 mm
Tz L5-S1	0 mm	0.5 mm	0.7 mm
Tz L1-S1	0 mm	25.1 mm	23.3 mm

Table 2 shows RRAs from L1 to S1, SBAs, Tz per segment from L1 to S1, and Tz of L1 to S1 comparisons of re-exam 1 and re-exam 2 LL x-rays. SBA improved from 33.5° to 37.0° (normal is 40.0°) and Tz L4-L5 improved from 7.1 mm to 2.4 mm, within normal limits (WNL) (normal is 0.0 mm).

RRA = Relative Rotational Angle of Measurement

ARA = Absolute Rotational Angle of Measurement

Tz = Translation in the z-axis

^*Tz in Red Exceed Established Normal

Xray 2 Values = Re-Exam 1 following 30 sessions over 11 weeks

Xray 3 Values = Re-Exam 2 following 60 sessions over 45 weeks