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在手术显微镜下逐层解剖显露家兔正中神经和坐骨神经，观察Ｆｏｎｔａｎａ带在神经干表面及切除外膜、分离束膜后的形态。进一步用组织学方法证实Ｆｏｎｔａｎａ带即是神经纤维以束为单位在外膜下形成的三维迂曲走行结构。牵引延长使这种结构消失时的神经干延长率，在家兔坐骨神经为１０．７２±０．２６％，成犬的坐骨神经为８．５０±０．１８％
Under the operation microscope, the median nerve and sciatic nerve of rabbits were anatomized layer by layer, and the morphology of Fontana band on the surface of the neural stem and the excision of the adventitia was observed. Histology further confirmed that the Fontana zone is a three-dimensional tortuous structure of nerve fibers formed under the outer membrane in bundles. Traction extension to make this structure disappears when the nerve stem elongation rate of 10.72 ± 0.26% in rabbits sciatic nerve, adult sciatic nerve 8.50 ± 0.18%