Table 3 Comparison of complication between patients with constrained condylar knee prostheses and those with rotating hinge knee prostheses
Complication | Implant | ||
|---|---|---|---|
CCK group | RHK group | Total | |
Aseptic loosening | 12 (19.6%) | 3 (5.3%) | 15 (12.8%) |
PJI | 3 (4.9%) | 3 (5.4%) | 6 (5.1%) |
Instability | 3 (4.9%) | 0 | 3 (2.6%) |
Extensor mechanism instability | 2 (3.2%) | 3 (5.4%) | 5 (4.2%) |
Stiffness | 0 | 1 (1.8%) | 1 (0.85%) |
Synovitis | 0 | 1 (1.8%) | 1 (0.85%) |
Periprosthetic fracture | 5 (8.2%) | 1 (1.8%) | 6 (5.1%) |
Patela tendon lesion | 5 (8.2%) | 0 | 5 (4.2%) |
Haematoma | 2 (3.2%) | 0 | 2 (1.71%) |
TOTAL | 32/61 (50.8%) | 12/56 (21.4%) | 44/117 (37.6%) |