Sample group Sample number TG step linear region/°C Mass loss/% Reaction order/nSD Slope of linearregion Normal 3 63.53 – 96.73 37.51 1.00 0.22 0.44 Moderate 4 63.73 – 97.20 45.45 1.00 0.23 0.18 Severe 4 62.65 – 96.55 46.88 1.13 0.21 0.26

Table 1: Reaction kinetic parameters of meniscus samples with no degeneration, moderate, and severe degree of degeneration.