Fig 1.
Representation of spine bone mineral density (BMD) data from a patient who underwent spinal vertebroplasty.
(a) The inclusion of vertebrae affected by bone cement in the region of interest (ROI) for the computer analysis of BMD data, and the exclusion of affected vertebrae from the analysis of lumbar spine BMD; in this example, the affected vertebra was L2. (b) A situation in which the affected vertebrae were excluded from the ROI. (c) dual-energy X-ray absorptiometry image of the same patient before spinal vertebroplasty performed one year prior; this patient did not take any medicine that could affect bone health during the intervening time. The differences in BMD at L3–4 showed in Table 1.
Table 1.
Comparison of bone mineral densities in a representative patient shown in Fig 1.
Table 2.
Descriptive characteristics (n = 285).
Table 3.
Differences between two bone mineral density measurements including or excluding the affected vertebrae in the region of interest.
Table 4.
Association between the distinct materials used for spinal procedures and various modifications in BMD when the affected vertebrae included in the ROI and excluded from the analysis are compared with the affected vertebrae excluded from the ROI.