Table 1.
Comparison of methods to measure surface wear in acetabular liners.
| Study | Method | Accuracy (µm) |
Scan Time (min) |
Number of pointsa |
|---|---|---|---|---|
| Present study | Optical Scanner | 2.1 | 10 | ~ 1.8 million |
| Lord et al. [15] | CMM | 0.9 | 20 | 3024–4104 |
| Wang et al. [17] | CMM | 1.9 | 50 | 3720 |
| Teeter et al. [20] | Micro-CT | 50b | 95 | Not given |
| Bowden et al. [18] | Micro-CT | 74b | 240 | Not given |
| Yun et al. [30] | Laser Scanner | Not given | 25–34 | Not given |
a
Measured on the acetabular liner.
b
Accuracy based on spatial resolution of the Micro-CT system.