Patient Demographics by Etiology
| Etiology | Male | Female | Total | Age (y) |
| Idiopathic | 1 | 18 | 19 | 43 ± 12 |
| Diabetic | 1 | 14 | 15 | 48 ± 16 |
| Postsurgical | 2 | 3 | 5 | 66 ± 11 |
| Postinfectious | 0 | 2 | 2 | 29 ± 7 |
| After radiotherapy | 1 | 0 | 1 | 52 |
| Ehlers–Danlos | 0 | 1 | 1 | 33 |
| Unrecorded | 1 | 3 | 4 | 54 ± 6 |
| Total | 6 | 41 | 47 | 47 ± 15 |
XRT = radiation therapy.
Age is expressed as average ± SD.