Disease severity | Grade 0 (no fusion) | Grade 1 (fusion extending to the proximal interphalangeal joint) | Grade 2 (fusion extending to the distal interphalangeal joint of the longer finger) | Grade 3 (fusion extending to the tip of the digit) | ||||
---|---|---|---|---|---|---|---|---|
Right hand | Left hand | Right hand | Left hand | Right hand | Left hand | Right hand | Left hand | |
 Mild  N = 9 |  |  |  |  |  |  |  |  |
  Baseline | 9 (100) | 9 (100) | 0 | 0 | 0 | 0 | 0 | 0 |
  Week 4 | 9 (100) | 9 (100) | 0 | 0 | 0 | 0 | 0 | 0 |
 Moderate  N = 10 |  |  |  |  |  |  |  |  |
  Baseline | 5 (50.0) | 5 (50.0) | 3 (30.0) | 3 (30.0) | 0 | 0 | 2 (20.0) | 2 (20.0) |
  Week 4 | 5 (50.0) | 5 (50.0) | 2 (20.0) | 2 (20.0) | 0 | 0 | 2 (20.0) | 2 (20.0) |
 Severe  N = 11 |  |  |  |  |  |  |  |  |
  Baseline | 2 (18.2) | 2 (18.2) | 3 (27.3) | 5 (45.5) | 1 (9.1) | 0 | 5 (45.5) | 4 (36.4) |
  Week 4 | 2 (18.2) | 2 (18.2) | 3 (27.3) | 5 (45.5) | 0 | 0 | 6 (54.5) | 4 (36.4) |
Overall N = 30 |  |  |  |  |  |  |  |  |
 Baseline | 16 (53.3) | 16 (26.7) | 6 (20.0) | 8 (26.7) | 1 (3.3) | 0 | 7 (23.3) | 6 (20.0) |
 Week 4 | 16 (53.3) | 16 (26.7) | 5 (16.7) | 7 (23.3) | 0 | 0 | 8 (26.7) | 6 (20.0) |