Table 3. Comparing the Mean ODI Between the Disc Involvement Levels in the Studied Patients .

	L3-5	L4-5	L4-S1	L2-4	L2-3, L4-5	L3-S1	L5-S1	L1-5	L2-3, L4-S1	P Value
Before	32.0±6.4	32.7±4.3	32.7±7.0	41.0±0	30.0±0	38.0±0	31.0±3.9	25.0±0	21.0±0	0.577
After	20.7±9.4	18.5±6.3	24.0±13.5	31.0±0	14.0±0	17.0±0	24.4±8.4	21.0±0	-	0.161