Group (n) | Neuroma size Mean (range) | Scar formation index Mean (range) |
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Group 1 (10) | 2.05 (1.5–3.0) | 0.54 (0.3–1.0) |
Group 2 (8) | 1.75 (1.0–2.5) | 0.63 (0.2–1.0) |
Group 3 (10) | 1.20 (1.0–1.5) | 0.9 (0.5–2.0) |
Group 4 (7) | 1.39 (1.2–1.5) | 0.31 (0.1–0.5) |
Group 5 (10) | 1.34 (1.1–1.8) | 0.33 (0.2–0.5) |
- Group 1: Control, Group 2: Astragalus mongholicus Bunge, Group 3: Coptis japonica (Thunb.) Makino, Group 4: Aconitum carmichaelii Debeaux, Group 5: Paeonia lactiflora Pall
- Neuroma size = ratio of the diameter of the nerve on the site of neurorrhaphy to that on the normal proximal nerve
- Scar tissue formation index = ratio of the thickness of the epineural scar tissue to the nerve diameter (Fig. 1)