Table 3.

Segmental mobility of the lumbar spine by level

Spine levels	Translational motion (mm)	Angular motion (°)	Percentage of total angular mobility (%)
L1–L2	1.38 ± 0.78*	7.34 ± 4.00**	19.32 ± 9.68
L2–L3	1.41 ± 0.95*	8.56 ± 4.07	22.45 ± 10.69
L3–L4	1.14 ± 1.09	8.34 ± 3.83	21.50 ± 8.36
L4–L5	1.10 ± 0.89	8.87 ± 5.41	22.03 ± 11.52
L5–S1	1.01 ± 1.00	5.87 ± 4.45**	14.71 ± 9.86†

Values presented as mean ± SD

* Significant difference between L1–L2 and L2–L3 compare to all other levels (P < 0.007)

** Significant difference between L5–S1 and L1–L2 when compared to all other levels (P < 0.05)

^† L5–S1 contributes significantly less to total angular mobility when compared with all other levels (P < 0.001)