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Table 2 Mean Changes from the baseline in the clinical values of patients with chronic LBP with trigger point on quadratus lumborum muscle within the each group of ESWT or corticosteroid TPI (n = 54)

From: Comparison of efficacy of corticosteroid injection versus extracorporeal shock wave therapy on inferior trigger points in the quadratus lumborum muscle: a randomized clinical trial

Clinical value

ESWT(n = 27)

Corticosteroid TPI (n = 27)

Mean ± SD

MC (95% CI)

P value †

Mean ± SD

MC (95% CI)

P value †

ODI

Before

22.44 ± 1.44

Reference

23.93 ± 1.27

Reference

Week 2

16.07 ± 1.29

6.37 (4.34 to 8.40)

< 0.001

13.52 ± 1.13

10.41 (8.38 to 12.43)

<  0.001

Week 4

14.26 ± 1.32

8.18 (6.02 to 10.35)

< 0.001

19.89 ± 1.13

4.04 (1.87 to 6.20)

0.001

PPT

Before

28.04 ± 0.75

Reference

29.41 ± 0.47

Reference

Week 2

33.37 ± 1.21

5.33 (3.43 to 7.23)

< 0.001

38.70 ± 0.83

9.30 (7.40 to 11.20)

< 0.001

Week 4

34.26 ± 1.23

6.22 (4.26 to 8.19)

< 0.001

34.37 ± 0.70

4.96 (3.00 to 6.93)

< 0.001

SF-36

Before

74.59 ± 1.35

Reference

73.78 ± 1.30

Reference

Week 2

81.93 ± 1.53

7.33 (4.18 to 10.48)

< 0.001

79.56 ± 1.46

5.78 (2.63 to 8.93)

< 0.001

Week 4

84.00 ± 1.48

9.41 (5.93 to 12.88)

< 0.001

75.48 ± 1.08

1.70 (− 1.76 to 5.18)

0.546

VAS

Before

7.63 ± 0.27

Reference

7.22 ± 0.26

Reference

Week 2

5.81 ± 0.25

1.81 (1.18 o 2.44)

< 0.001

3.52 ± 0.35

3.70 (3.07 to 4.33)

< 0.001

Week 4

5.11 ± 0.36

2.52 (1.90 to 3.13)

< 0.001

5.44 ± 0.27

1.78 (1.16 to 2.39)

< 0.001

  1. Abbreviations: ESWT Extracorporeal shockwave, TPI Trigger point injection, SD standard deviation, MC mean change, CI confidence interval, ODI Oswestry disability index, PPT Pressure Pain Threshold, SF-36 Short Form (36) Health Survey, VAS Visual Analogue Scale
  2. Symbols: †P values obtained from Mixed ANOVA test
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BMC Musculoskeletal Disorders

ISSN: 1471-2474

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