Fig. 4.

The results of the sealing effect of different spinal dural defect repair methods. (A) Schematic diagram of limit pressure test of spinal dural defect repair methods using porcine small intestine. (B) Limit pressure of different spinal dural defect repair methods. (C) Schematic diagram of experimental model of spinal dural defect repair by patch in porcine spinal dura. (D) Pictures of the porcine spinal cords used in the experiment. (E) Photos of the spine at different times after dural defects were repaired using patches. Data are presented as mean ± SD. *P < 0.05 and **P < 0.01, significant difference among different group.