“…36 On experimental pressurized testing studies, dural defects repaired by suture alone leak at physiologic pressure ranges, whereas those repairs supplemented by tissue adhesives, i.e., fibrin glue, tolerated higher pressures. 7,12,13,[23][24][25][26][27][28][29]31,32,39,45,47,[52][53][54][55][56][57][58][59][60] In 1977, Chvapil commented on the plasticity of collagen matrices for the repair of biologic tissues, especially its porosity and its 3-dimensional matrix to encourage cellular in-growth. However, a failure rate of 3% occurred when the repair was augmented by fibrin glue.…”