Urinary bladder augmentation surgeries are common to restore lost function due to trauma and neurogenic disorder, however not all procedures are successful, suggesting that the materials used for the repair may be inadequate [1]. To create a moreappropriate material, rigorous mechanical behavior characterization of the native bladder wall is required, which is not currently available. As a first step towards the development of tissue engineered bladder repair material [2], we performed the firstbiaxial testing on both passive and active properties of urinary bladder.
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