Table 1 Demographic data for Grafton® DBM/local autograft and DBX® DBM/local autograft composites for instrumented posterolateral fusion

Mean age (years)

65.7 (range: 43–82)

Sex (male/female)

8/11

Mean follow-up (months)

33.8 (range: 24–48)

Surgery (fused segment)

19

 One-level

13 (58%): 11 L4–5, 1 L3–4, 1 L2–3

 Two-level

4 (21%): 4 L3–4-5

 Three-level

2 (11%): 2 L2–3–4-5

Diabetes mellitus

8 (42%)

Smoking

4 (21%)

Mean BMI

24.9 (range: 20.1–30.2)

 BMI < 25

9 (47%)

 BMI ≥25

10 (53%)

Pedicle screw system

19

 Optima™

12 (63%)

 CD Horizon Legacy™

4 (21%)

Iliad™

3 (16%)