| TGRs | VEPTRs | P |
---|---|---|---|
No. of surgeries | 544 | 455 | - |
No. of IFs | 24 | 18 | - |
Incidence of IF, % | 4.3/surgery | 4.0/surgery | 0.72 |
Details of IF, n (%) | - Anchor loosening/dislocation: 15 (62.5) (all cephalad) - Rod breakage: 8 (33.3) - Connector breakage: 1 (4.2) | - Anchor loosening/dislocation: 11 (61.1) (cephalad: 6, caudal: 4, unknown: 1) - Rod breakage: 3 (16.7) - Implant protrusion: 3 (16.7) - Proximal junctional kyphosis: 1 (5.6) | - |