Figure 3.

Cross sections of new myelinated nerve fibers at the distal end in rats with median nerve injury, stained with osmic acid.

(A) Sham operation group; (B) epineurial neurorrhaphy group; (C) musculocutaneous nerve transposition group; (D) medial pectoral nerve transposition group; (E) radial nerve muscular branch transposition group. Axon cross-sectional area was smaller in musculocutaneous nerve, medial pectoral nerve, and radial nerve muscular branch than that in median nerve. Axon diameter was less uniform in musculocutaneous nerve, medial pectoral nerve, and radial nerve muscular branch than in normal median nerve. Scale bars: 10 μm.