Table 2.

Patient characteristics based on types of LDH

	LDH type	Total cases	Bone Disruption				Total positive	Ratio (%)	P
			-	+	++	+++
LDH groups	Bulging	36	35	1	0	0	1	2.8%
	Herniated	117	19	35	43	20	98	84%	0.001#
	Prolapse	39	2	8	12	17	37	95%	0.001#, 0.01*

^# P<0.001, Herniated/Prolapse group vs. Bulging group;

^* P<0.01, Prolapse group vs. Herniated group.