Date of download: 11/13/2017 Copyright © ASME. All rights reserved. From: Effects of Boundary Conditions on the Estimation of the Planar Biaxial Mechanical Properties of Soft Tissues J Biomech Eng. 2005;127(4):709-715. doi:10.1115/1.1933931 Figure Legend: (a) A schematic of the biaxial testing setup with four suture attachments, indicating the material axes X1–X2; (b) biaxial testing setup with gripping method as using clamp on each side of a square sample; and (c) biaxial testing setup with clamps on each side of a cruciform sample. Dimensions of a, b, and c are listed in Table . Note that the BB line is used for measuring the stress variation within the specimen.