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Table 1 Histopathological scoring system for quantification of edema and Ischemia Fiber Degeneration (IFD)

From: Ipsilateral common iliac artery plus femoral artery clamping for inducing sciatic nerve ischemia/reperfusion injury in rats: a reliable and simple method

Histopathologic grade Edema IFD (ischemic fiber degeneration)
0 normal ≤ 2%
1 Mild edema 3–25%
2 Moderate edema 26–50%
3 Severe edema 51–75%
4 Severe and widespread edema >75%