Table 1 Basic patient information materials

Number of patients, n

16

Mean age, year (range)

65.4 ± 9.0

Sex, F/M

13/3

Mean BMI, kg/m²

23.3 ± 2.1

Chronic disease, n (%)

Hypertensive

4 (25)

Diabetes

4 (25)

Hypertensive and diabetes

4 (25)

Hypertensive and heart attack

2 (12.5)

Disease type, n (%)

Mild spinal stenosis

4 (25)

Moderate spinal stenosis

10 (62.5)

Severe spinal stenosis

2 (12.5)

Surgical level, n (%)

L2–L3

1 (6.25)

L3–L4

4 (25)

L4–L5

11(68.75)

Lumbar spine instability at suigical level, n (%)

11(68.75)

Mean cage height, mm (range)

12.5(11–14)

Complications, n (%)

Cage subsidence

2 (12.5)

Endplate injury

1 (6.25)