Table 2.
The baseline characteristics of all the 41 patients with primary autologous cranioplasty after decompressive craniectomy and the number of patients with relevant bone flap resorption (grades II to III) defined as Oulu resorption score ≥ 5. Non-relevant BFR (grade 0 to I) is defined as Oulu resorption score < 5
| Variable | Patients (n = 41) | Grades II to III BFR (n = 15) | Grades 0 to I BFR (n = 26) | p value |
|---|---|---|---|---|
| Sex | 0.28 | |||
| Male, n (%) | 31 (75.6) | 13 (86.7) | 18 (69.2) | |
| Female, n (%) | 10 (24.4) | 2 (13.3) | 8 (30.8) | |
| Age (years) | 0.09 | |||
| 15–29 | 11 (26.8) | 7 (46.7) | 4 (15.4) | |
| 30–49 | 16 (39.0) | 5 (33.3) | 11 (42.3) | |
| 50–65 | 14 (34.1) | 3 (20.0) | 11 (42.3) | |
| Indication for decompressive craniectomy | 0.60 | |||
| Trauma | 16 (39.0) | 7 (46.7) | 9 (34.6) | |
| Stroke | 24 (58.5) | 7 (46.7) | 17 (65.4) | |
| Intracranial ischemia | 19 (46.3) | 6 (40.0) | 13 (50.0) | |
| SAH | 1 (2.4) | 0 (0.0) | 1 (3.8) | |
| ICH | 4 (9.8) | 1 (6.7) | 3 (11.5) | |
| Other | 1 (2.4) | 1 (6.7) | 0 (0.0) | |
| Smoking habit | 0.15 | |||
| Smoker, n (%) | 14 (34.1) | 3 (20.0) | 11 (42.3) | |
| Non-smoker, n (%) | 27 (65.9) | 12 (80.0) | 15 (57.7) | |
| 2D defect size | 0.13 | |||
| < 91.70 cm2, n (%) | 20 (48.8) | 5 (33.3) | 15 (57.7) | |
| ≥ 91.70 cm2, n (%) | 21 (51.2) | 10 (66.6) | 11 (42.3) | |
| Freezer time | 0.46 | |||
| < 90 days | 8 (19.5) | 4 (26.7) | 4 (15.4) | |
| 90 to 179 days | 11 (26.8) | 5 (33.3) | 6 (23.1) | |
| ≥ 180 days | 22 (53.7) | 6 (40.0) | 16 (61.5) | |
A p value of < 0.05 was considered statistically significant in the χ2 or Fisher’s exact tests
BFR bone flap resorption, SAH subarachnoid hemorrhage, ICH intracerebral hemorrhage