The Short-Term Outcome of Transforaminal Epidural Steroid Injection in Patients with Radicular Pain Due to Foraminal Stenosis from Lumbar Isthmic Spondylolisthesis

Figures & data

Figure 1 The grading of isthmic spondylolisthesis based on the degree of slippage of one vertebral body on the adjacent vertebral body (Grade I <25%; Grade II: 25–50%; Grade III: 50–75%; Grade IV: 75–100%).

Table 1 Demographic Characteristics of Patients in Group 1 and Group 2

	Group 1	Group 2	P-value
Number (n)	23	15
Age (yrs)	62.7 ± 12.9	59.9 ± 14.7	0.595
Male: Female	14:9	5:10	0.097
NRS (pre-treatment)	4.8 ± 1.1	5.1 ± 1.3	0.791
Pain duration (months)	28.1 ± 32.7	22.0 ± 30.1	0.344
Site of Pain (right/left)	13:10	6:9	0.319
Nerve root Injection level (L4/L5)	3:20	1:14	0.531

Abbreviation: NRS, numeric rating scale.

Figure 2 Change in NRS scores. (A) NRS scores in the entire cohort showed a significant decrease at 1 and 2 months after TFESI compared to pre-treatment. (B) NRS scores in Groups 1 and 2 revealed a significant decrease at 1 and 2 months after TFESI compared to pre-treatment. The intergroup changes over time were significantly different. One month after TFESI, the NRS scores were significantly lower in the Group 1 than in the Group 2. *p <0.05: intragroup comparison between 1 and 2 months post-treatment and pre-treatment (repeated measures one-factor analysis), ^†p <0.05: intergroup comparison at each time-point (repeated measures two-factor analysis).