Table 1 Number of RLs ≥ 1 mm (%) on digital tomosynthesis and plain radiography by the zones of DeLee and Charnley at the designated postoperative periods
1 week | 3 months | 6 months | 1 year | 2 years | ||
|---|---|---|---|---|---|---|
Zone 1 | DTS | 15 (27.3)* | 11 (20.0) | 11 (20.0) | 12 (21.8) | 11 (20.0) |
RG | 2 (3.6) | 1 (1.8) | 0 | 0 | 1 (1.8) | |
Zone 2 | DTS | 20 (36.4) | 13 (23.6) | 15 (27.3) | 10 (18.2) | 14 (25.5) |
RG | 4 (7.3) | 2 (3.6) | 2 (3.6) | 1 (1.8) | 2 (3.6) | |
Zone 3 | DTS | 5 (9.1) | 7 (12.7)* | 9 (16.4)* | 7 (12.7)* | 5 (9.1)* |
RG | 1 (1.8) | 4 (7.3) | 2 (3.6) | 4 (7.3) | 3 (5.5) | |
Total patients | DTS | 25 (45.4)* | 19 (34.5)* | 17 (30.9)* | 18 (32.7)* | 20 (36.3)* |
RG | 5 (9.1) | 4 (7.3) | 3 (5.5) | 5 (9.1) | 5 (9.1) |