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Table 3 Pre- and post-operative clinical assessment

From: Bioactive glass grants equivalent fusion compared to autologous iliac crest bone for ALIF: a within-patient comparative study

 

Final cohort (n = 38)

No posterior instrumentation (n = 14)

Posterior instrumentation (n = 14)

p-value*

mean ± SD

(range)

mean ± SD

(range)

mean ± SD

(range)

Follow-up (months)

24.7 ± 2.4

(23 – 34)

25.4 ± 3.3

(23 – 34)

24.3 ± 1.6

(23 – 30)

0.143

Lower back pVAS

Preoperative

4.9 ± 1.4

(2 – 8)

5.0 ± 1.2

(3 – 7)

4.9 ± 1.5

(2 – 8)

 

Postoperative

1.4 ± 1.5

(0 – 6)

1.6 ± 1.8

(0 – 6)

1.3 ± 1.2

(0 – 4)

0.742

Net change

-3.5 ± 1.9

(-7 – 0)

-3.4 ± 2.0

(-7 – 0)

-3.6 ± 1.9

(-7 – 0)

0.735

Leg pVAS

Preoperative

3.7 ± 2.0

(0 – 8)

3.5 ± 2.2

(0 – 7)

3.8 ± 2.0

(0 – 8)

 

Postoperative

1.9 ± 1.6

(0 – 6)

2.4 ± 1.5

(1 – 6)

1.6 ± 1.6

(0 – 5)

0.137

Net change

-1.8 ± 2.8

(-8 – 5)

-1.1 ± 2.9

(-6 – 5)

-2.3 ± 2.7

(-8 – 2)

0.207

ODI

Preoperative

47.9 ± 11.4

(32 – 72)

49.6 ± 12.1

(35 – 72)

46.9 ± 11.1

(32 – 72)

 

Postoperative

14.8 ± 12.4

(0 – 54)

16.1 ± 14.0

(0 – 54)

14.0 ± 11.6

(0 – 42)

0.647

Net change

-33.1 ± 15.7

(-64 – 6)

-33.5 ± 16.7

(-64 -– 4)

-32.9 ± 15.4

(-62 – 6)

0.910

SF-12 physical

Preoperative

27.5 ± 6.4

(16 – 44)

27.2 ± 7.0

(16 – 43)

27.7 ± 6.2

(17 – 44)

 

Postoperative

45.4 ± 9.1

(20 – 59)

43.6 ± 9.7

(20 – 55)

46.5 ± 8.8

(24 – 59)

0.340

Net change

17.9 ± 9.4

(-9 – 36)

16.4 ± 9.0

(-1 – 32)

18.8 ± 9.7

(-9 – 36)

0.214

SF-12 mental

Preoperative

35.8 ± 8.0

(22 – 53)

33.7 ± 8.0

(25 – 53)

37.0 ± 7.9

(22 – 50)

 

Postoperative

46.4 ± 9.3

(21 – 59)

46.3 ± 11.2

(21 – 58)

46.5 ± 8.2

(27 – 59)

0.705

Net change

10.6 ± 13.2

(-32 – 37)

12.5 ± 15.9

(-32 – 28)

9.5 ± 11.6

(-8 – 37)

0.203

  1. Abbreviations: SD Standard Deviation, pVAS pain on Visual Analogue Scale, ODI Oswestry Disability Index, SF-12 Short-form 12
  2. * Comparison of patients with and without posterior instrumentation