Table 2

- Comparison between MRI lumbar facet joints synovitis grading before and after the intervention in Group I receiving platelet-rich plasma at each lumbar level.

MRIBeforeAfterTest value*P-valueSig.
L1-2 (n=5 [16.7%])
Grade L1-2       
Grade 000.0480.06.8000.033S
Grade I480.0120.0
Grade II120.000.0
L2-3 (n= 7 [76.7%])
Grade L2-3       
Grade 000.0685.710.5710.005HS
Grade I685.7114.3
Grade II114.300.0
Grade III00.000.0
L3-4 (n=9 [70.0%])
Grade L3-4       
Grade 000.0777.811.4550. 001HS
Grade I9100.0222.2
Grade II00.000.0
Grade III00.000.0
L4-5 (n=11 [63.3%])
Grade L4-5       
Grade 000.0763.611.6000.009HS
Grade I872.7218.2
Grade II218.2218.2
Grade III19.100.0
L5-S1 (n=13 [56.7%])
Grade L5–S1       
Grade 000.0646.28.0000.018S
Grade I1076.9646.2
Grade II323.117.7
Grade III00.000.0

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