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Table 3 Comparisons between patients with solid fusion and not solid fusion

From: Surgical outcomes after instrumented lumbar surgery in patients of eighty years of age and older

 

Solid fusion

N = 53

Not solid fusion

N = 19

P value

Sex (M:F)

21:32

7:12

0.831

OP age (years)

82.5 ± 2.5

82.3 ± 3.0

0.786

BMI

25.0 ± 3.5

26.1 ± 2.6

0.189

Pre-op VAS (back)

6.3 ± 2.7

6.2 ± 2.3

0.938

Final VAS (back)

2.5 ± 2.5

2.0 ± 2.0

0.356

Pre-op VAS (leg)

5.5 ± 3.1

4.4 ± 2.9

0.188

Final VAS (leg)

2.0 ± 2.7

1.7 ± 2.2

0.705

Pre-op ODI

62.5 ± 9.0

59.7 ± 8.9

0.554

Final ODI

30.0 ± 12.4

29.8 ± 10.9

0.979

ODI difference (final - pre-op)

32.6 ± 13.1

29.9 ± 11.2

0.689

ODI improvement (%)

0.5 ± 0.4

0.5 ± 0.3

0.612

Primary : secondary surgery

46:7

17:2

0.762

Complication (yes : no)

7:46

1:18

0.344

Instrumented segment

2.0 ± 0.94

3.0 ± 1.8

0.003

Op time (minutes)

194.4 ± 51.0

211.9 ± 60.7

0.226

Blood loss (ml)

714.3 ± 530.9

1012.1 ± 804.2

0.074

CCI

1.6 ± 1.6

2.3 ± 2.2

0.127

  1. M male, F female, Op operation, BMI body mass index, VAS visual analog scale, ODI oswestry disability index, CCI the Charlson comorbidity index