Table 2.
Paired-samples T test analysis at last follow-up.
| Variables (degrees) | Preoperative period | Last follow-up | P* | ||||||
|---|---|---|---|---|---|---|---|---|---|
| N=32 | Mean | Min | Max | SD | Mean | Min | Max | SD | |
| FSU alignment | −0.68 | −14.0 | 12.6 | 6.66 | 7.36 | 3 | 15 | 3.29 | 0.001 |
| UAS alignment | 0.53 | −7.5 | 12.2 | 5.65 | 3.68 | −5 | 13.6 | 5.40 | <0.001 |
| LAS alignment | 4.22 | −2 | 7.5 | 2.62 | 1.82 | −5.3 | 5.5 | 2.81 | <0.001 |
| C2–C7 alignment | 11.51 | −7.1 | 29.5 | 13.45 | 17.83 | 0.5 | 28.5 | 8.69 | <0.001 |
| ROM of FSU | 13.31 | 4.5 | 27.5 | 7.11 | 9.70 | 4.0 | 21.2 | 5.52 | <0.001 |
| ROM of UAS | 9.18 | 2.7 | 17.7 | 4.84 | 10.77 | 4.8 | 18.7 | 4.36 | <0.001 |
| ROM of LAS | 8.56 | 4.0 | 16.5 | 3.63 | 5.53 | 2.0 | 8.9 | 1.98 | <0.001 |
| ROM of C2–C7 | 51.03 | 32.5 | 79.1 | 13.72 | 39.57 | 19.7 | 60.5 | 10.69 | 0.001 |
*
P values are from T test.
Max – maximum; Min – minimum; FSU – functional spinal unit; UAS – upper adjacent segment; LAS – lower adjacent segment; ROM – range of motion.