Halo Gravity Traction Is Associated with Reduced Bone Mineral Density of Patients with Severe Kyphoscoliosis
Table 1
Demographics of the cohort .
Pre-HGT
Post-HGT
Age (years)
16.3 ± 7.6
N/A
—
Traction duration (days)
77.9 ± 13.0
N/A
—
Traction weight (%)
39.9 ± 11.1
N/A
—
Height (m)
1.37 ± 0.21
1.38 ± 0.21
0.794
Weight (kg)
33.7 ± 13.3
34.1 ± 13.4
0.612
BMI (kg/m2)
16.97 ± 3.04
17.18 ± 3.00
0.235
Major coronal Cobb angle (°)
115.3 ± 21.4
73.9 ± 17.8
<0.001
GK (°)
106.9 ± 22.3
70.9 ± 13.9
<0.001
-score of LS BMD
−2.2 ± 1.4
−2.7 ± 1.5
<0.001
-score of FN BMD
−1.5 ± 1.4
−1.9 ± 1.5
<0.001
LS BMD (g/cm2)
0.706 ± 0.200
0.654 ± 0.216
<0.001
FN BMD (g/cm2)
0.722 ± 0.125
0.689 ± 0.133
<0.001
“HGT” denotes the halo gravity traction. N/A: not applicable. “BMI” denotes body mass index. “GK” denotes global kyphosis. “LS” denotes lumbar spine (L2–L4). “FN” denotes femoral neck of the nondominant side.
