A New CT Method for Assessing 3D Movements in Lumbar Facet Joints and Vertebrae in Patients before and after TDR

Table 2

Individual patient’s movement and facet joint magnitude at L4-L5 level before and after surgery.

	Rotation (degrees)						3D facet translation (mm)
Patient	Sagittal		Coronal		Transverse		Right		Left
	Before	After	Before	After	Before	After	Before	After	Before	After
1	7.1	6.8	0.3	1.0	0.3	0.2	3.4	2.6	3.3	2.2
2	11.6	12.7	1.4	0.8	0.0	0.3	3.2	3.7	4.5	5.8
3	2.2	9.6	0.8	0.8	0.4	0.4	1.0	5.6	1.2	6.6
4	3.8	6.5	1.1	0.4	0.2	0.3	1.9	3.4	2.0	3.8
5	15.2	12.4	0.2	1.1	0.7	0.4	8.1	6.9	7.1	6.7
6	5.9	8.8	0.6	0.5	0.9	0.9	2.8	3.2	3.1	3.9
7	3.2	5.4	0.6	1.4	0.8	0.9	3.4	2.5	3.4	2.7
8	9.8	8.7	0.2	2.2	1.1	1.3	4.6	2.9	6.1	3.0
9	9.2	12.7	0.8	1	0.8	0.4	3.9	4.9	4.6	5.1
10	8.2	10.3	1.2	0.9	0.2	0.3	6.2	6.7	5.9	7.2
Median (±SD)	7.7 (±4.0)	9.2 (±2.7)	0.7 (±0.4)	1.0 (±0.5)	0.6 (±0.4)	0.4 (±0.4)	3.4 (±2.1)	3.6 (±1.7)	4.0 (±1.9)	4.5 (±1.8)
Minimum	2.2	5.4	0.2	0.4	0.0	0.2	1.0	2.5	1.2	2.2
Maximum	15.2	12.7	1.4	2.2	1.1	1.3	8.1	6.9	7.1	7.2