Table 1.

The effective cement blocking area, % DHI, and IDD grade after 48 weeks of surgery

Number	Cement injection				Normal control
	Disc location	Blocking area (%)	% DHI	IDD grade	Disc location	% DHI	IDD grade
1	L2–3	52.9	79.2	3	L1–2	85.7	2
	L3–4	57.2	75.3	4	L4–5	92.6	1
2	L2–3	54.7	81.7	3	L1–2	80.2	1
	L3–4	62.5	69.0	5	L4–5	88.0	1
3	L2–3	58.4	77.8	4	L1–2	90.5	1
	L3–4	59.8	72.7	4	L4–5	82.1	2
4	L2–3	58.5	72.6	3	L1–2	85.3	2
	L3–4	69.6	70.7	5	L4–5	93.8	1
5	L2–3	62.5	68.2	4	L1–2	84.7	1
	L3–4	67.2	60.5	5	L4–5	85.6	1
6	L2–3	63.9	66.8	4	L1–2	79.4	2
	L3–4	49.6	79.2	3	L4–5	82.0	2
7	L2–3	64.7	66.5	4	L1–2	90.5	1
	L3–4	63.2	73.8	4	L4–5	86.3	2
8	L2–3	65.7	74.0	5	L1–2	83.2	2
	L3–4	61.4	75.4	4	L4–5	93.7	1
Mean		60.7 ± 5.3	72.7 ± 5.6*	4.0 ± 0.7*		86.5 ± 4.6*	1.4 ± 0.5*

DHI disc height index, IDD intervertebral disc degeneration

^*Difference between experimental and control groups was significant