Table 2.
The demographics and clinical characteristics for the culture-negative and culture-positive group
| Variable | All patients, n = 62 | Culture-negative group, n = 31 | Culture-positive group, n = 31 | P-value |
|---|---|---|---|---|
| Age at revision (yrs)a | 61.3 ± 14.5 | 62 ± 14.6 | 60.6 ± 14.7 | 0.7 |
| Genderb | 0.12 | |||
| Male | 25 (40) | 9 (29) | 16 (52) | |
| Female | 37 (60) | 22 (71) | 15 (48) | |
| Radiographic evaluationb | ||||
| Malunion | 12 (19) | 6 (19) | 6 (19) | |
| Nonunion | 5 (8) | 3 (10) | 2 (6) | |
| AVN | 18 (29) | 11 (36) | 7 (23) | |
| Combination | 13 (21) | 4 (13) | 9 (29) | |
| Negative | 14 (23) | 7 (23) | 7 (23) | |
| Shoulder stiffnessb, c | 34/47 (72) | 15/26 (58) | 19/21 (91) | 0.02 |
| Serum CRP level (mg/l)a | 5.4 ± 7.3 | 3.8 ± 3 | 6.8 ± 9.7 | 0.69 |
| Time from index surgery until revision (months)a | 16.2 ± 20.6 | 20.5 ± 24.4 | 12.4 ± 15.8 | 0.02 |
| ASA score (median, range) | 2 (1–3) | 2 (1–3) | 2 (1–3) | |
AVN Avascular necrosis
aThe values are given as the mean and the standard deviation. bThe values are given as the number with the percentage of the group in parentheses
cIncluding only patients with an interval of ≥6 months between the index osteosynthesis and revision surgery