Fig. 3

(A–D) Stiffness and compliance assessments of phantom tissues using four different devices. (A) MyotonPRO: triplicate measurements at middle, right, and left points. (B) Shore Durometer: triplicate readings from the same regions of each test site. (C) IndentoPRO: controlled-force stiffness assessment (10 N/s) with 10 mm indentations at three locations. (D) Tissue Compliance Meter (TCM): triplicate compliance measurements at the middle, right, and left regions.