Table 2.
Summary of clinical studies of computer navigation TKA
| Study | Ethnic origin | Age of patients (years)* | Body height (cm)* | Preoperative deformity* | Postoperative deformity* (satisfactory alignment) | Satisfactory femoral prosthesis alignment | Satisfactory tibial prosthesis alignment |
|---|---|---|---|---|---|---|---|
| Current study | Asia | 69 ± 9.2 (48–89) | 150 ± 8 (124–163) | Varus 14° ± 8° (varus 3° to varus 38°) | Varus 1.3° ± 3.3° (71%) | 94.3% | 86.5% |
| Sparmann et al. [28] | Germany | 67.4 | (100%) | 100% | 82% | ||
| Stockl et al. [29] | Austria | 68.2 | Varus 3° | Varus 0.3° (100%) (± 5°) | |||
| Bathis et al. [1] | Germany | 68.7 | Varus 8.4° | 0° (96%) | 92% | 98% | |
| Victor and Hoste [34] | Belgium | 72 | 164 (150–176) | Varus 0.4° | 0° (100%) | ||
| Matsumoto et al. [22] | Japan | Varus 0.6° (93%) | |||||
| Decking et al. [8] | Germany | 64.7 | Varus 1.5° (52%) (± 2°) | ||||
| Kim et al. [17] | United States | 68 | Varus 0.4° (94%) | ||||
| Bolognesi and Hofmann [2] | United States | 98% | 100% | ||||
| Haaker et al. [12] | Germany | 68 | 167 (150–188) | Varus 6.3° | Varus 0.77° (79%) | ||
| Chin et al. [7] | Singapore | 67.3 | Varus 1.58° (80%) | 93.3% | 93.9% | ||
| Martin and Strempel [21] | Austria | 70.6 | Varus 9° | Varus 2° (81%) | 95.2% | 95.2% | |
| Matziolis et al. [23] | Germany | 71 | Varus 1.4° (97%) | 100% | 100% | ||
| Malik et al. [20] | United Kingdom | 63.9 | Varus 0.68° |
Prosthesis alignment in the coronal plane is considered satisfactory if the absolute error is 3° or less from ideal alignment of the prosthesis in the coronal plane unless specified otherwise: ± 2°, ± 5° = within 2°, 5° from optimal alignment, respectively; *values are expressed as mean ± standard deviation.