Table 4 Complication, reoperation and revision rates. Reoperation includes any new ankle surgery from day after index to 365 days post-index. Revision only includes reoperations of the ankle performed after 21 days, to exclude touch-up cases observed immediately post-surgery and indicative of possible misalignment, versus actual revisions due to post-operative complications

Any reoperation (From Day 1 to Day 365 Post Index)

10.3% (10.0% − 10.6%)

9.4% (8.4% − 10.5%)

Revisions (From Day 22 to Day 365 Post Index)

5.5% (5.3% − 5.7%)

5.9% (5.1% − 6.8%)

Complication Types ^a

  Necrosis

0.1% (0.1% − 0.1%)

0.1% (0.0% − 0.2%)

  Deformity

0.3% (0.2% − 0.3%)

0.6% (0.4% − 0.9%)

  Malunion

0.8% (0.7% − 0.9%)

1.2% (0.9% − 1.6%)

  New Arthritis

1.8% (1.7% − 2.0%)

2.5% (1.9% − 3.0%)

  Instability

1.9% (1.8% − 2.0%)

2.2% (1.7% − 2.6%)

  Nonunion

2.5% (2.3% − 2.7%)

3.6% (2.9% − 4.2%)

  Delayed Healing

2.7% (2.5% − 2.9%)

4.5% (3.8% − 5.2%)

  Refracture

3.6% (3.4% − 3.8%)

11.4% (10.3% − 12.5%)

  Mechanical Complications

3.9% (3.7% − 4.1%)

4.2% (3.5% − 4.9%)

  Infection

4.4% (4.2% − 4.6%)

9.8% (8.8% − 10.9%)

  Joint Derangements

24.6% (24.1% − 25.1%)

17.3% (15.8% − 18.7%)

  Residual Pain > 3 Months Post Surgery

29.5% (28.7% − 30.3%)

39.3% (36.0% − 42.6%)