Table 1.
Patients included in the study
| Start of prophylaxis |
||
|---|---|---|
| Factor | Preoperative | Postoperative |
| Hip fractures with osteosynthesis, n (%) | 20,563 (45) | 25,350 (55) |
| Mean duration of surgerya | 51 (33) | 51 (34) |
| Mean age at fracture (years) (SD) | 80 (12) | 80 (13) |
| Women (%) | 69 | 69 |
| ASA groups, n (%) | ||
| ASA 1 | 1,363 (6.6) | 1,857 (7.3) |
| ASA 2 | 7,015 (34) | 8,793 (35) |
| ASA 3 | 10,362 (50) | 12,860 (51) |
| ASA 4 | 1,475 (7) | 1,520 (6) |
| ASA 5 | 34 (0.2) | 27 (0.1) |
| Missing | 314 (1.5) | 293 (1.2) |
| Type of surgeryb | ||
| Screws, n (%) | 6,781 (45) | 8,204 (55) |
| Mean duration of surgerya | 26 (14) | 26(14) |
| Hip compression screw, n (%) | 9,939 (46) | 11,825 (54) |
| Mean duration of surgerya | 62 (31) | 61 (30) |
| Intramedullary nail, n (%) | 3,843 (42) | 5,321 (58) |
| Mean duration of surgerya | 66 (38) | 66 (41) |
a
Values are minutes (SD)
b
Screws include operations with Olmed screws. Hip compression screws include operations with a dynamic hip screw (DHS) with or without a support plate. Intramedullary nails include long and short nails with or without the use of an interlocking screw.