Table 7.
Reoperation up to 24 months in patients with hip fracture according to type of treatment. Figures are numbers (percentages) of patients unless stated otherwise*
| Internal fixation (n=111) | Hemiarthroplasty (n=108) | |
|---|---|---|
| Adjustment of screw position | 1 (1) | 0 (0) |
| Screw removal | 8 (7) | 1 (1) |
| Hemiarthroplasty as tertiaryprocedure after screw removal† | 4 (4) | 1 (1) |
| Screw removal and hemiarthroplasty† | 35 (32) | 1 (1) |
| Revision from hemiarthroplasty to total hip arthroplasty†‡ | 4 (4) | 0 (0) |
| Soft tissue debridement of hemiarthroplasty† | 7 (6) | 6 (6) |
| Open reduction of dislocated hemiarthroplasty† | 2 (2) | 0 (0) |
| Closed reduction of dislocated hemiarthroplasty† | 5 (5) | 1 (1) |
| Excision arthroplasty† | 4 (4) | 3 (3) |
| Total No of reoperations§ | 70 | 13 |
| No of hips with any reoperation¶ | 47 (42) | 11 (10) |
| No of hips with major reoperation** †† | 44 (40) | 11 (10) |
*Excludes two patients who died preoperatively, one in each group, and one patient in hemiarthroplasty group lost to follow-up.
†Registered as major reoperation.
‡In one case stem was exchanged and revised to conventional total hip arthroplasty. In the other three hips stem retained and semiconstrained acetabular component inserted.
§P<0.001.
¶Relative risk (95% CI) 4.20 (2.30 to 7.65), P<0.001
**Two patients with failure of internal fixation did not have further operation because of poor medical condition. Three patients with avascular necrosis were diagnosed at 24 month follow-up and thus did not have further operation within follow-up time of 24 months. One had no pain and no reoperation was planned.
††Relative risk (95% CI) 3.89 (2.13 to 7.13), P<0.001.