Table 3.
Causes of failure of revision TKA with mean times to rerevision surgery
| Cause for rerevision | Type of implant | |||||
|---|---|---|---|---|---|---|
| PS | CCK | RH | ||||
| Number of cases | Mean time to rerevision (months) | Number of cases | Mean time to rerevision (months) | Number of cases | Mean time to rerevision (months) | |
| Aseptic loosening | 2 | 96.5 | 1 | 72 | 2 | 65.5 |
| Instability | 3 | 58 | 3 | 87.3 | ||
| Infection | 2 | 77 | 6 | 66.8 | 2 | 71.5 |
| Fracture | 2 | 65.5 | 1 | 72 | ||
| Patella | 3 | 87.3 | ||||
| Extensor mechanism failure | 2 | 59.5 | ||||
| Stiffness | 3 | 40.7 | ||||
PS = posterior stabilized; CCK = condylar constrained knee; RH = rotating hinge.