Table 3 Accuracy of implant position after total ankle arthroplasty according to preoperative ankle congruency
Varus (n = 80) | Valgus (n = 28) | |||||
|---|---|---|---|---|---|---|
Congruent (n = 46) | Incongruent (n = 34) | p value | Congruent (n = 18) | Incongruent (n = 10) | p value | |
α anglea | 92.2 ± 3.0 | 92.8 ± 2.3 | 0.327 | 90.7 ± 2.9 | 90.8 ± 2.8 | 0.915 |
Outcomesb | ||||||
Excellent | 23 (50.0%) | 18 (52.9%) | 0.906 | 10 (55.6%) | 5 (50.0%) | 0.999 |
Acceptable | 16 (34.8%) | 12 (35.3%) | 7 (38.9%) | 4 (40.0%) | ||
Outlier | 7 (15.2%) | 4 (11.8%) | 1 (5.5%) | 1 (10.0%) | ||
γ anglea | 91.7 ± 3.5 | 92.1 ± 3.0 | 0.540 | 90.7 ± 2.5 | 89.2 ± 2.5 | 0.156 |
Outcomesb | ||||||
Excellent | 26 (56.5%) | 17 (50.0%) | 0.278 | 11 (61.1%) | 7 (70.0%) | 0.379 |
Acceptable | 12 (26.1%) | 14 (41.2%) | 7 (38.9%) | 2 (20.0%) | ||
Outlier | 8 (17.4%) | 3 (8.8%) | – | 1 (10.0%) | ||