| Symptoms | Dominant | Non Dominant |
|---|---|---|
| Mild incomplete paralysis | ||
| Moderate incomplete paralysis | ||
| Severe incomplete paralysis | ||
| Complete paralysis; the "griffin claw" deformity is present due to flexor contraction of ring and little fingers, muscle loss, loss of extension of ring and little fingers causes inability to spread the fingers (or reverse), cannot adduct the thumb, flexion of the wrist is weakened. |