Table 1 Basement characteristics.

From: Bilateral synchronous UBE for unilateral laminotomy and bilateral decompression as a potentially effective minimally Invasive approach for two-level lumbar spinal stenosis

Items

Data (n = 64)

Sex (M/F)

34/31

Age (years)

66.88 ± 6.42

Disease duration (months)

36.13 ± 25.77

Levels

L2-L4

1

L3-L5

17

L4-S1

45

L3/4 + L5/S1

1

Operation duration(M)

119.92 ± 14.79

Number of X-ray shots

3.02 ± 0.92

Blood loss volume(ml)

73.44 ± 36.70

Length of stay(d)

4.06 ± 0.96

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