Fig. 4

(A–H) Agreement Analysis of Stiffness Measurement Tools Using Bland–Altman Plots: Inter-Rater and Intra-Rater Comparisons. *Panels (A–D) show inter-rater, and Panels (E–H) show intra-rater agreement for MyotonPRO, Durometer, IndentoPRO, and TCM. Each plot displays the mean bias and 95% limits of agreement. Narrow limits and low bias reflect strong measurement consistency within and between raters.