Fig. 3

Mid-vertebral body height and vertebral kyphosis angle. Vertebral body height was 17.4 ± 0.7 mm in the TPD group and 16.6 ± 0.9 mm in the BP group before treatment. This measure decreased to 13.0 ± 0.7 mm and 13.2 ± 0.9 mm at the final follow-up, respectively (p = 0.228, paired t-test). The vertebral kyphosis angle was 8.6 ± 1.0° in the TPD group and 10.8 ± 0.8° in the BP group before treatment. This angle increased to 13.2 ± 1.3° and 14.6 ± 1.0° at the final follow-up, respectively (p = 0.495, paired t-test)