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Table 2 Patient demographics

From: Correlation between surgical segment mobility and paravertebral muscle fatty infiltration of upper adjacent segment in single-segment LDD patients: retrospective study at a minimum 2 years’ follow-up

 

PITF(n = 21)

TTL(n = 24)

EVO(n = 23)

P1

P2

P3

Pre-operation

 Mean age, years

52.90 ± 5.94

50.16 ± 9.67

49.04 ± 8.55

0.514

0.278

0.888

 F/M gender

9/12

10/14

8/15

0.861*

 Follow-up (Month)

39.62 ± 10.36

34.75 ± 10.31

37.00 ± 9.04

0.234

0.657

0.718

 BMI in kg/m2, mean

24.99 ± 2.61

25.45 ± 2.19

25.64 ± 2.08

0.784

0.619

0.957

 surgical segment L4–5/L5–S1

15/6

19/5

18/5

0.823*

 Disorder

   

0.856*

 Disc herniation

3

5

6

   

 Spinal stenosis

14

13

13

   

 Spondylolisthesis

4

6

4

   

 C-LSDI

9.42 ± 3.52

9.45 ± 3.69

9.13 ± 2.78

0.978

0.756

0.734

Post-operation

 Goutallier Grade of upper segment (no. of levels)

   

 < 0.001#

 Grade 0

0

0

10(43.5%)

   

 Grade 1

0

10(41.7%)

13(56.5%)

   

 Grade 2

7(33.3%)

12(50%)

0

   

 Grade 3

14(66.7%)

2(8.3%)

0

   

 Grade 4

0

0

0

   

 Lumbar lordosis (°)

56.22 ± 7.92

52.40 ± 7.16

54.18 ± 6.69

0.190

0.623

0.678

 Operation time (min)

145.71 ± 21.11

129.17 ± 8.80

128.26 ± 7.75

0.0004*

0.0002*

0.9717

 Blood loss (ml)

164.67 ± 17.99

144.58 ± 18.65

139.35 ± 19.79

0.002*

0.0001*

0.6096

  1. BMI body mass index, C-LSDI China lumbar stiffness disability index P1 (PITF vs. TTL). P2 (PITF vs. EVO). P3 (TTL vs. EVO)
  2. *The p values are from a one-way ANOVA
  3. The p values are from a chi-square test
  4. #p < 0.05, Fisher’s exact test