Fig. 4
The fractional anisotropy values from the sciatic and femoral nerves. a The overall distribution of FA values. The FA value of the sciatic nerve was decreased significantly from the femoral head level through the midpoint and to the S1 root level. b Gender differences in the FA values. Blue boxes in men and red boxes in women. c Laterality of the FA values. Yellow boxes in the right side and green boxes the left side. d A scatterplot of age versus FA values from the femoral nerve, showing an age-dependent decrease ([femoral nerve] = 0.633–0.003 × [age]; R 2 = 0.092, p = 0.03). FH level femoral head level. *p < 0.05