Table 3. Grades of extensor tendon injuries by compartment.
| Grade | First compartment | Second compartment | Third compartment | Fourth compartment | Fifth compartment | Sixth compartment |
|---|---|---|---|---|---|---|
| 1 | 3 (75%) | 6 (100%) | 3 (100%) | 2 (66.6%) | 0 | 3 (16.6%) |
| 2 | 1 (25%) | 0 | 0 | 1 (33.3%) | 0 | 1 (5.55%) |
| 3 | 0 | 0 | 0 | 0 | 0 | 0 |
| 4 | 0 | 0 | 0 | 0 | 0 | 12 (66.6%) |
| 5 | 0 | 0 | 0 | 0 | 0 | 2 (11.1%) |
| 6 | 0 | 0 | 0 | 0 | 0 | 0 |
| Total cases | 4 | 6 | 3 | 3 | 0 | 18 |