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TABLE 2: Rotations at each lumbar level in patients with back pain and abnormal intervertebral disks
Group 2 Patient No. Level Rotation (degrees) MR Appearance of Intervertebral Disk
1 L1-L2 −0.5 Normal
L2-L3 1.0 Normal
L3-L4 2.3 Normal
L4-L5 0.6 Abnormal
L5-S1 4.2 Abnormal
2 L1-L2 3.7 Abnormal
L2-L3 2.5 Normal
L3-L4 1.4 Normal
L4-L5 −0.9 Abnormal
L5-S1 3.9 Abnormal
3 L1-L2 1.6 Normal
L2-L3 1.1 Normal
L3-L4 5.6 Abnormal
L4-L5 0.0 Normal
L5-S1 1.5 Normal
4 L1-L2 2.2 Normal
L2-L3 0.8 Normal
L3-L4 −0.1 Normal
L4-L5 3.2 Abnormal
L5-S1 4.7 Abnormal
5 L1-L2 0.1 Normal
L2-L3 2.2 Abnormal
L3-L4 2.0 Normal
L4-L5 3.4 Abnormal
L5-S1 3.1 Abnormal

Group 2 Patient No.	Level	Rotation (degrees)	MR Appearance of Intervertebral Disk
1	L1-L2	−0.5	Normal
	L2-L3	1.0	Normal
	L3-L4	2.3	Normal
	L4-L5	0.6	Abnormal
	L5-S1	4.2	Abnormal
2	L1-L2	3.7	Abnormal
	L2-L3	2.5	Normal
	L3-L4	1.4	Normal
	L4-L5	−0.9	Abnormal
	L5-S1	3.9	Abnormal
3	L1-L2	1.6	Normal
	L2-L3	1.1	Normal
	L3-L4	5.6	Abnormal
	L4-L5	0.0	Normal
	L5-S1	1.5	Normal
4	L1-L2	2.2	Normal
	L2-L3	0.8	Normal
	L3-L4	−0.1	Normal
	L4-L5	3.2	Abnormal
	L5-S1	4.7	Abnormal
5	L1-L2	0.1	Normal
	L2-L3	2.2	Abnormal
	L3-L4	2.0	Normal
	L4-L5	3.4	Abnormal
	L5-S1	3.1	Abnormal