Degenerative Spondylolisthesis Is Associated with Low Spinal Bone Density: A Comparative Study between Spinal Stenosis and Degenerative Spondylolisthesis
Table 2
Bone densitometry and radiographic parameters.
DDD
Spinal stenosis
Degenerative spondylolisthesis
value
BMC (g)
L4
14.29 (4.21)
16.70 (2.59)
NA
0.35
L3
14.42 (5.99)
18.48 (4.90)
13.42 (3.41)
0.02
L2
12.65 (4.16)
15.20 (4.70)
11.45 (2.78)
0.01
L1
11.96 (4.39)
12.57 (3.91)
10.20 (2.94)
0.08
BMD (g/cm2)
L4
0.812 (0.141)
1.059 (0.347)
NA
0.35
L3
0.847 (0.290)
1.122 (0.215)
0.942 (0.175)
0.04
L2
0.874 (0.254)
0.993 (0.210)
0.873 (0.206)
0.10
L1
0.851 (0.232)
0.884 (0.198)
0.794 (0.175)
0.22
-score
L4
−2.90 (1.32)
−0.65 (3.34)
NA
0.35
L3
−2.22 (2.68)
0.26 (1.95)
−1.33 (1.58)
0.06
L2
−1.60 (2.41)
−0.56 (1.85)
−1.52 (1.95)
0.17
L1
−0.89 (2.19)
−0.68 (1.71)
−1.36 (1.62)
0.33
-score
L4
−1.60 (1.83)
0.96 (4.02)
NA
0.35
L3
−0.80 (3.17)
1.78 (2.08)
0.79 (1.76)
0.13
L2
−0.07 (2.88)
1.10 (1.94)
0.49 (2.26)
0.42
L1
0.51 (2.48)
0.86 (1.76)
0.43 (1.86)
0.73
Overall
BMC (g)
41.27 (21.27)
31.10 (16.49)
28.58 (12.12)
0.38
BMD (g/cm2)
0.884 (0.219)
0.954 (0.205)
0.855 (0.179)
0.11
-score
−1.32 (2.28)
−0.52 (1.75)
−1.42 (1.70)
0.10#
-score
0.20 (2.68)
1.09 (1.81)
0.51 (2.20)
0.43*
Bone status
0.05
Normal
4 (57%)
34 (61%)
8 (44%)
Osteopenia
1 (14%)
17 (30%)
3 (17%)
Osteoporosis
2 (29%)
5 (9%)
7 (39%)
Disc height
L4-L5
0.25 (0.03)
0.25 (0.02)
NA
0.64
L3-L4
0.20 (0.05)
0.21 (0.06)
0.22 (0.06)
0.62
L2-L3
0.15 (0.04)
0.18 (0.05)
0.18 (0.05)
0.43
L1-L2
0.12 (0.05)
0.16 (0.04)
0.13 (0.06)
0.23
Osteophyte score
L4-L5
0.75 (0.65)
2.00 (0.00)
NA
0.06
L3-L4
1.20 (0.57)
1.38 (0.82)
0.67 (0.43)
0.10
L2-L3
1.38 (0.48)
1.42 (0.86)
0.89 (0.53)
0.07
L1-L2
1.50 (0.58)
1.27 (0.83)
1.07 (0.62)
0.47
Vertebral wedging
L4
1.05 (0.06)
0.99 (0.06)
NA
0.35
L3
0.96 (0.06)
1.01 (0.08)
1.01 (0.05)
0.27
L2
0.90 (0.02)
0.93 (0.08)
0.95 (0.10)
0.48
L1
0.99 (0.26)
0.90 (0.10)
0.93 (0.09)
0.51
Lordosis
19° (18°)
24° (15°)
30° (11°)
0.21
Difference in bone densitometry and radiographic parameters between the three diagnostic groups. when performing two-group comparison of spinal stenosis and degenerative spondylolisthesis # = 0.04, * = 0.26. Values are mean (sd) or (%). NA: not applicable.
