Table 4

- Comparison of lumbar facet joint synovitis grading on MRI before and after the intervention in Group II receiving corticosteroids.

MRI	Before		After		Test value*	P-value	Sig.
MRI	n	%	n	%	Test value*	P-value	Sig.
L1–2 (n=2 (6.7%))
Grade L1–2
Grade 0	0	0.0	1	50.0	1.333	0.248	NS
Grade I	2	100.0	1	50.0
Grade II	0	0.0	0	0.0
Grade III	0	0.0	0	0.0
L2–3 (n=1 (3.3%))
Grade L2–3
Grade 0	0	0.0	1	100.0	2.000	0.157	NS
Grade I	1	100.0	0	0.0
Grade II	0	0.0	0	0.0
Grade III	0	0.0	0	0.0
L3–4 (n=7 (23.3%))
Grade L3–4
Grade 0	0	0.0	3	42.9	5.619	0.132	NS
Grade I	5	71.4	2	28.6
Grade II	1	14.3	2	28.6
Grade III	1	14.3	0	0.0
L4–5 (n=13 (43.3%))
Grade L4–5
Grade 0	0	0.0	3	23.1	9.714	0.021	S
Grade I	5	38.5	9	69.2
Grade II	6	46.2	1	7.7
Grade III	2	15.4	0	0.0
L5–S1 (n=13 (46.7%))
Grade L5–S1
Grade 0	0	0.0	7	53.8	11.328	0.001	HS
Grade I	7	53.8	6	46.1
Grade II	6	46.1	0	0.0
Grade III	0	0.0	0	0.0

p>0.05: not significant (NS), p<0.05: significant (S), p<0.01: highly significant (HS), *: Chi-square test, MRI: magnetic resonance imaging