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Table 4 Results of the neuroma size and the scar formation index for each group

From: Effect of herbal extracts on peripheral nerve regeneration after microsurgery of the sciatic nerve in rats

Group (n)

Neuroma size

Mean (range)

Scar formation index

Mean (range)

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)

  1. Group 1: Control, Group 2: Astragalus mongholicus Bunge, Group 3: Coptis japonica (Thunb.) Makino, Group 4: Aconitum carmichaelii Debeaux, Group 5: Paeonia lactiflora Pall
  2. Neuroma size = ratio of the diameter of the nerve on the site of neurorrhaphy to that on the normal proximal nerve
  3. Scar tissue formation index = ratio of the thickness of the epineural scar tissue to the nerve diameter (Fig. 1)