Table 3 Bone-implant interface evaluation related to the percentage of bone resection
Group | Number of patients | Length of retained femur, mm | Axial length of press-fit area, mm | Percentage of press-fit length in stem length, % | Vertical distance of radiolucent area | |||||
|---|---|---|---|---|---|---|---|---|---|---|
Anterior/posterior | Medial/lateral | |||||||||
Distal endpoint, mm | Midpoint, mm | Proximal endpoint, mm | Distal endpoint, mm | Midpoint, mm | Proximal endpoint, mm | |||||
< 40% resection | 23 | 279.8 (range, 237.7–353.6) | 92.3 (range, 80.7–136.6) | 91.8 (range, 80.1–97.5) | 0.52/0.61 | 0.92/0.75 | 1.12/0.90 | 0.21/0.17 | 0.45/0.34 | 1.02/0.83 |
40 to 60% resection | 14 | 195.0 (range, 150.4–246.4) | 57.0 (range, 21.7–87.1) | 57.0 (range, 21.7–87.1) | 0.78/0.84 | 1.08/1.03 | 1.55/2.1 | 0.35/0.18 | 0.64/0.45 | 1.24/0.94 |
> 60% resection | 3 | 110.0 (range, 83.2–131.4) | 20.5 (range, 15.8–24.3) | 20.5 (range, 15.8–24.3) | 0.63/0.3 | 2/2.2 | N/A | 0/0 | 2.1/2.3 | N/A |
All | 40 | 236.3 (range, 83.2–353.6) | 74.0 (range,15.8–136.6) | 74.3 (range, 15.8–97.5) | 0.61/0.65 | 1.03/0.92 | 1.26/1.28 | 0.24/0.16 | 0.98/0.53 | 1.09/0.86 |