Table 1 Characteristics of patients who underwent anterior strut reconstruction

Age

76.1 (8.4)

Sex

Male

25

Female

56

Smoking history

No

72

Yes

9

DM history

No

60

Yes

21

Femur proximal BMD (g/cm²)

0.54 (0.07)

maxVB

3.1 (4.5)

Number of cases per maxVB

0 (n = 46), 2 (n = 3), 3 (n = 4), 4 (n = 2), 5 (n = 7), 6 (n = 5), 9 (n = 2), 10 (n = 2), 11 (n = 4), 12 (n = 2), 13 (n = 2), 15 (n = 1), and 17 (n = 1)

Osteoporosis drugs

None

32

Bone formation stimulants

35

Bone resorption inhibitors

11

Others

3

Surgical techniques

Unilateral side screw fixation

37

Pedicle screw fixation

44

Number of fixed vertebrae

3.2 (1.5)

Materials used for the anterior props

Iliac bone

72

Expandable cage

9

Surgical duration (min)

256 (89)

Volume of blood loss (ml)

428 (367)

Postoperative bone union

None

20

Unilateral

19

Bilateral

42

Barthel Index

88.4 (7.5)

Postoperative back pain score

1.9 (1)

Preoperative local angle (°)

−8.5 (14)

Postoperative local angle (°)

−4 (12.7)

Postoperative local angle at 6 months (°)

−10.9 (16)

Corrective angle (°)

4.4 (9.8)

Loss of the correction angle (°)

6.8 (8.3)

Mean (SD)