Table 3.
Fracture type, operation type, and rate of reoperation for the 2,000 patients who were operated before or after implementation of the algorithm
| Before algorithm | After algorithm | ||||
|---|---|---|---|---|---|
| Reop. | Reop. | ||||
| Fracture type | rate | rate | |||
| Type of operation | n | (%) | n | (%) | p-value |
| Femoral neck fractures | 467 | 24 | 482 | 18 | 0.02 |
| Undisplaced | 88 | 17 | 79 | 13 | 0.3 |
| Parallel implants a | 75 | 74 | |||
| Prosthesis | 9 | 5 | |||
| Other | 4 | – | |||
| Displaced (Age < 70 years) | 37 | 51 | 61 | 27 | 0.5 |
| Parallel implants a | 25 | 37 | |||
| Prosthesis b | 8 | 23 | |||
| Other | 4 | 1 | |||
| Displaced (Age ≥ 70 years) | 329 | 22 | 328 | 13 | 0.005 |
| Prosthesis a | 288 | 316 | |||
| Femoral head removal c | 2 | 3 | |||
| Parallel implants | 38 | 7 | |||
| Other | 1 | 2 | |||
| Vertical | 13 | 39 | 14 | 43 | 0.7 |
| DHS (2 holes) a | 9 | 11 | |||
| DHS (other types) | 1 | 1 | |||
| Parallel implants | 3 | 2 | |||
| Extracapsular fractures | 533 | 13 | 518 | 7 | 0.002 |
| Basocervical | 22 | 9 | 21 | 14 | 0.7 |
| DHS (2 holes) a | 13 | 20 | |||
| DHS (other types) | 7 | – | |||
| Parallel implants | – | 1 | |||
| Prosthesis | 2 | – | |||
| Stable trochanteric | 211 | 7 | 144 | 4 | 0.3 |
| DHS (4 holes) a | 204 | 136 | |||
| DHS (other types) | 4 | – | |||
| IMHS | 3 | 8 | |||
| Unstable trochanteric | 300 | 17 | 353 | 8 | < 0.001 |
| IMHS a | 112 | 337 | |||
| DHS (4 holes) | 156 | 13 | |||
| DHS (other types) | 32 | – | |||
| Other implants | – | 3 | |||
| All hip fractures | 1,000 | 18 | 1,000 | 12 | < 0.001 |
| Level of surgeon | |||||
| Unsupervised junior registrar | 192 | 20 | 105 | 11 | 0.03 |
| Supervised junior registrar | 287 | 16 | 398 | 10 | 0.02 |
| Senior registrar or consultant | 521 | 18 | 497 | 15 | 0.08 |
a Operation type dictated by the algorithm.
b Prosthesis is dictated if not fully reducible on the traction table.
c Femoral head removal is dictated if bedridden.
Rates of reoperation were analyzed using univariate Cox regression analysis.