Table 4 Comparison between the cases without lumbar surgery and those with lumbar surgery

Age, average, average (range), years

66.3 ± 12.8 (27–90)

66.5 ± 14.2 (33–81)

Sex, female/male, No.

14/19

2/11

Duration of disease, average (range), months

18.5 ± 29.2 (1-144)

20.2 ± 21.7 (3–72)

MMT, average (range),

Preoperative

3.1 ± 1.5 (0–5)

3.1 ± 1.5 (0–5)

Operation

Surgical procedure

LAM/PDF, No

22/11

9/4

Decompressed OLF levels, average (range), No.

1.5 ± 0.8 (1–4)

1.4 ± 0.7 (1–3)

Operative time, average (range), min

133.9 ± 90.8 (48–460)

215.5 ± 98.7 (60–436)*

Blood loss, average (range), mL

127.2 ± 185.1 (1-893)

496.8 ± 1097.9 (1-4090)

Outcomes

T-JOA score, average (range), points

Prethoracic operative

5.5 ± 1.9 (2–10)

6.3 ± 2.0 (3-9.5)

Prelumbar operative

-

6.5 ± 2.0 (3.5–9.5)

Postoperative

7.7 ± 1.5 (5.5–11)♰

8.0 ± 1.8 (4.5–11)♰$

Recovery rate of T-JOA score, average (range), %

35.7 ± 29.6 (-10-88.9)

38.1 ± 28.6 (0-100)

L-JOA score, average (range), points

Preoperative

-

14.5 ± 4.7 (9–24)

Postoperative

-

20.7 ± 2.6 (16–26)$

Recovery rate of L-JOA score, average (range), %

-

41.4 ± 12.5 (20.0-68.4)

VAS, average (range), mm

Preoperative

76.5 ± 23.9 (30–100)

73.6 ± 24.2 (30–100)

Postoperative

56.5 ± 32.1 (10–100)♰

52.5 ± 20.8 (0–70)♰