From: Sacral insufficiency fractures after high-dose carbon-ion based radiotherapy of sacral chordomas
Characteristics | Value | Percent |
---|---|---|
Age (y) | ||
Median | 61 | |
Range | 34–84 | |
Gender (n) | ||
Female | 19 | 33.9 |
Male | 37 | 66.1 |
Most cranial level of the tumor (n) | ||
L4/5 | 7 | 12.5 |
S1 | 9 | 16.1 |
S2 | 18 | 32.1 |
S3 | 12 | 21.4 |
S4 | 4 | 7.1 |
S5 | 4 | 7.1 |
Os coccygeum | 2 | 3.6 |
Sacral BMD in planning CT (HU) | ||
Median | - 18.5 | |
Range | - 89 – 151 | |
SIFs (n) | 29 | 51.8 |
Time to SIF (months) | ||
Median | 11.5 | |
Range | 0–62 | |
Clinical relevance of SIFs (n) | ||
Pain | 10 | 34.5 |
Neurologic deficits | 1 | 3.4 |