Case no. | Age (years)/sex | Level | Duration of symptoms (months) | Blood loss (ml) | Operation time (min) | Follow-up (months) |
---|---|---|---|---|---|---|
1 | 49/M | L5-S1 | 13 | 1150 | 200 | 45 |
2 | 51/F | L4–5 | 8 | 1000 | 150 | 38 |
3 | 49/M | L5-S1 | 12 | 700 | 150 | 35 |
4 | 48/F | L4–5 | 9 | 950 | 160 | 30 |
5 | 57/M | L5-S1 | 11 | 1050 | 210 | 38 |
6 | 45/F | L5-S1 | 7 | 600 | 140 | 31 |
7 | 45/M | L4–5 | 14 | 900 | 170 | 28 |
8 | 51/M | L3–4 | 7 | 850 | 150 | 31 |
9 | 71/M | L5-S1 | 6 | 500 | 170 | 38 |
10 | 48/F | L5-S1 | 8 | 750 | 210 | 36 |
11 | 63/F | L3–4 | 9 | 800 | 160 | 45 |
12 | 51/M | L5-S1 | 20 | 800 | 200 | 18 |
13 | 37/M | L4–5 | 9 | 650 | 190 | 36 |
14 | 42/M | L4–5 | 13 | 800 | 170 | 42 |
15 | 61/F | L5-S1 | 8 | 950 | 200 | 28 |
16 | 47/F | L4–5 | 13 | 500 | 130 | 35 |
17 | 55/F | L4–5 | 10 | 550 | 140 | 31 |
18 | 35/M | L4–5 | 9 | 750 | 180 | 42 |
19 | 46/F | L4–5 | 11 | 600 | 130 | 29 |
20 | 52/F | L4–5 | 9 | 850 | 170 | 32 |
21 | 55/M | L5-S1 | 10 | 500 | 140 | 36 |
22 | 41/F | L3–4 | 12 | 700 | 150 | 35 |
23 | 27/M | L4–5 | 6 | 750 | 170 | 28 |
Mean | 49.0 ± 9.5 | 10.2 ± 3.2 | 767.4 ± 181.2 | 167.0 ± 25.1 | 34.2 ± 6.3 |