Table 1.
Characteristics of 54patients with hematogenous pyogenic spondylodiscitis
| variable | GNB (n = 17) | GPC (n = 37) | p |
|---|---|---|---|
| Age (yr) | 65 ± 14.2 | 55 ± 14.5 | 0.014* |
| Male sex (No. [%]) | 11 (65) | 31 (84) | 0.162 |
| Follow-up (yr) | 4.8 (2–6) | 4.4 (2–6) | 0.372 |
| Affected level (No. [%]) | |||
| 1 | 14 (82) | 28 (76) | 0.732 |
| 2 | 3 (18) | 9 (24) | |
| Location of spinal lesions (No. [%]) | |||
| Cervical spine | 0 | 2 (5) | 0.601 |
| Thoracic spine | 2 (12) | 5 (14) | |
| Lumbosacral spine | 15 (88) | 30 (81) | |
| Symptoms at the initial visit (No. [%]) | |||
| Back/neck pain only | 5 (30) | 27 (73) | 0.003* |
| Constitutional symptoms only | 6 (35) | 2 (5) | |
| Back pain with constitutional symptoms | 6 (35) | 8 (22) | |
| Duration of symptoms (day) | 18 ± 21.8 | 37 ± 51.6 | 0.162 |
| Comorbidity (No. [%]) | |||
| Diabetes mellitus | 4 (24) | 18 (49) | 0.135 |
| End stage renal failure with hemodialysis | 0 | 5 (30) | 0.168 |
| Chronic liver disease | 6 (35) | 12 (32) | 0.824 |
| Malignancy | 7 (41) | 1 (3) | <0.001* |
| Intravenous drug abuse | 0 | 6 (16) | 0.161 |
| Neurologic symptoms (No. [%]) | 12 (71) | 22 (59) | 0.432 |
| Radicular pain | 9 (53) | 13 (35) | |
| Limb weakness | 7 (41) | 11 (30) | |
| Cauda equina syndrome | 2 (12) | 3 (8) | |
| Type of surgery (No. [%]) | |||
| Anterior surgery | 6 (35) | 16 (43) | 0.846 |
| Posterior surgery | 7 (41) | 7 (19) | |
| Combined surgery | 4 (24) | 14 (38) | |
| Clinical outcome (No. [%]) | |||
| Delayed wound healing | 1 (6) | 7 (19) | 0.411 |
| Relapse | 1 (6) | 10 (27) | 0.143 |
| Death | 3 (18) | 5 (14) | 0.7 |
| Radiologic result (No. [%]) | |||
| Solid fusion | 14 (82) | 32 (86) | 0.696 |
| Segmental instability | 0 | 0 | |
Data are presented as the mean ± standard deviation or frequency (%), *The difference is significant (p < 0.05), GNB gram-negative bacilli, GPC gram-positive cocci