Table 2 Radiographic and fixation characteristics in patients requiring revision for aseptic mechanical failure (Group 1), and those who did not (Group 2)
Group 1 | Group 2 | p Value | |
|---|---|---|---|
N = 85 | 11 | 74 | |
AO/OTA classification | |||
n (%) | |||
12A | 6 (55) | 38 (51) | 0.795 |
12B | 5 (45) | 28 (38) | |
12C | 0 (0) | 8 (11) | |
Comminution | |||
Yes | 6 (55) | 45 (61) | 0.748 |
No | 5 (45) | 29 (39) | |
Fixation type | |||
Rigid | 10 (91) | 68 (92) | 1.000 |
Bridge | 1 (9) | 6 (8) | |
Fracture location | |||
Proximal 1/3 | 1 (9) | 5 (7) | 0.767 |
Middle 1/3 | 7 (64) | 51 (69) | |
Distal 1/3 | 3 (27) | 18 (24) | |
% Involvement of shaft | 0.068 | ||
0–25% | 11 (100) | 49 (67) | |
26–50% | 0 (0) | 22 (30) | |
51–75% | 0 (0) | 2 (3) | |
76–100% | 0 (0) | 0 (0) | |
Implant type | 0.194 | ||
3.5 mm LCDC plate | 4 (36) | 9 (12) | |
4.5 mm narrow LCDC plate | 1 (9) | 7 (9) | |
4.5 mm broad LCDC plate | 0 (0) | 15 (20) | |
Proximal humeral locking plate | 3 (27) | 19 (26) | |
Posterolateral distal humeral Plate | 3 (27) | 24 (32) | |
Muti-planar fixation | 0.329 | ||
Yes | 9 (82) | 67 (91) | |
No | 2 (18) | 7 (9) | |
≥ 8 Cortices proximal fixation | 0.008* | ||
No | 9 (82) | 28 (38) | |
Yes | 2 (18) | 46 (62) | |
≥ 8 Cortices distal fixation | 0.040* | ||
No | 7 (64) | 22 (30) | |
Yes | 4 (36) | 52 (70) | |