| Etiology | Number (%) |
| Surgical site infection | 18 (20%) |
| Renal failure required temporary hemodialysis | 16 (17%) |
| Amputation. | 15 (16%) |
| Neurogenic: Foot drop | 14 (15%) |
| Transient liver impairment | 13 (14%) |
| Myocardial infarction | 8 (9%) |