Histograms depicting the assessment of the regenerated tibial nerve parameters.

<p>(A) The number of myelinated axons were not significantly different among the four groups at the proximal region of the tibial nerve. At the distal transaction, the immediate-repair and mixed-protected rats had significantly greater number of regenerated myelinated axons than the unprotected ones. There were significantly fewer numbers of regenerated myelinated axons in the sensory-protected group. (B) The axonal diameter and (C) area of myelinated fibers were smaller and (D) the width of myelin sheath was thinner in sensory-protected group (*p < 0.05 compared with unprotected control; **p < 0.05 compared with immediate-repair control; # p < 0.05 compared with sensory-protected group).