Table 3.

Correlations between HUm and other parameters

	HU	BMD-l	BMD-f	BMI	Preoperative disc height
BMD-l	0.467a
BMD-f	0.661a	0.696a
BMI	−0.086	0.028	−0.004
Preoperative disc height	0.081	0.059	0.138b	−0.138b
Modified Taillard index	0.064	0.047	0.102	− 0.079	0.115

^aP < 0.01, ^bP < 0.05