Table 2 Patient clinical score.

    Upper-extremity motor score

2.2 ± 1.0 (−0.5–4)

3.4 ± 0.6 (2.5–4)

<0.001

    Lower-extremity motor score

2.3 ± 0.9 (0.5–4)

2.9 ± 1.0 (1–4)

0.004

    Upper-extremity sensory score

1.0 ± 0.3 (0.5–1.5)

1.3 ± 0.4 (1–2)

0.001

    Trunk sensory score

1.7 ± 0.5 (1–2)

2.0 ± 0.1 (1.5–2)

0.004

    Lower-extremity motor score

1.2 ± 0.5 (0.5–2)

1.7 ± 0.4 (1–2)

<0.001

    Sphincter score

2.4 ± 0.7 (1–3)

2.8 ± 0.5 (1–3)

0.009

    Total

10.8 ± 2.6 (4–15)

14.0 ± 2.0 (9–17)

<0.001

    Neck function

62.0 ± 27.4 (0–100)

77.9 ± 27.6 (10–100)

0.001

    Upper extremity function

71.1 ± 25.7 (5–100)

87.6 ± 15.7 (42–100)

0.028

    Lower extremity function

55.3 ± 29.8 (0–100)

73.5 ± 23.1 (36–100)

0.008

    Bladder function

70.4 ± 19.0 (38–100)

79.7 ± 17.9 (38–100)

<0.001

    QOL

41.9 ± 24.0 (2–94)

53.4 ± 21.5 (16–97)

0.023

10-second test (lower side)*

15.6 ± 3.5 (11–21)

27.4 ± 7.8 (12–41)

0.004

Operative gain in 10-second test

NA

11.8 ± 6.6 (0–21)

    Pain or numbness in upper extremity (mm)

55.5 ± 28.0 (8–100)

45.9 ± 31.3 (0–100)

0.246