Table 1. Characteristics of patients in the insufficiency fracture (IF-p) and control (C-p) series.
| Characteristics of patients | IF-p series | C-p series |
|---|---|---|
| Sex | ||
| Male | 9 (29%) | 9 (29%) |
| Female | 22 (71%) | 22 (71%) |
| Age: mean (range) | 65.7±10.21 (range, 30–81) years | 64.9±11.24 (range, 32–80) years |
| Menopausal status | ||
| Pre-menopausal | 8 (36%) | 7 (32%) |
| Post-menopausal | 14 (64%) | 15 (68%) |
| Disease | ||
| Gynecological | 14 (46%) | 14 (46%) |
| Gastrointestinal | 15 (48%) | 15 (48%) |
| Urological | 2 (6%) | 2 (6%) |
| Chemotherapy | Yes: 19 (61%) | Yes: 19 (61%) |
| No: 12 (39%) | No: 12 (39%) | |
| RT target dose (PTV): mean (range) | 5,030±510 (range, 4,500–5,940) cGy | 5,050±540 (range, 4,500–5,940) cGy |
| Localization of the IFs | ||
| Sacroiliac joints | 18 (58%) | |
| Pubis | 7 (23%) | |
| Acetabulum | 4 (13%) | |
| Sacral body | 7 (23%) | |
| Lumbar vertebrae | 6 (19%) | |
| RT technique | ||
| IMRT | 16/31 (52%) | 17/31 (55%) |
| 3D/CRT | 15/31 (48%) | 14/31 (45%) |
| Enrollment period | ||
| Jan 2009 to Dec 2012 | 15/31 (48%) | 16/31 (52%) |
| Jan 2013 to Dec 2016 | 16/31 (52%) | 15/31 (48%) |