Table 1. Incidence and revision rates of APJFs in the three groups.
| All (135) | T9–T10 (52) | T11–T12 (45) | L1–L2 (33) | |
|---|---|---|---|---|
| APJFs | 52 (39%) | 25 (48%) | 14 (31%) | 13 (39%) |
| UIV, UIV + 1 fracture | 32 (62%) | 19 (76%) | 8 (57%) | 5 (38%) |
| PJK > 15 degrees | 11 (21%) | 3 (12%) | 3 (21%) | 5 (39%) |
| UIV implant failure | 8 (15%) | 2 (8%) | 3 (21%) | 3 (23%) |
| < 6 mo revision | 1 (2%) | 1 (4%) | 0 (0%) | 0 (0%) |
| Revision APJF | 23 (44%) | 10 (40%) | 6 (43%) | 7 (54%) |
| UIV, UIV + 1 fracture | 16 (70%) | 8 (80%) | 3 (50%) | 5 (71%) |
| PJK > 15 degrees | 0 (0%) | 0 (0%) | 0 (0%) | 0 (0%) |
| UIV implant failure | 6 (26%) | 1 (10%) | 3 (50%) | 2 (29%) |
| < 6 mo revision | 1 (4%) | 1 (10%) | 0 (0%) | 0 (0%) |
| Overall revision APJF | 23/135 (17%) | 10/52 (19%) | 6/45 (13%) | 7/33 (21%) |