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. 2023 Oct 16;31(12):5554–5564. doi: 10.1007/s00167-023-07602-w

Fig. 5.

Fig. 5

Results of the pin-on-plate tests; Boxplots (min., max., median, 25% and 75% percentiles) of the coefficient of friction (CoF) under stance (A) and swing phase (B) conditions. Results of the tribosystem Meniscus (n = 18) and Cartilage (n = 6) are shown for the samples with mild OA (green) and moderate OA (red), lubricated with synthetic synovial fluid (sSF) or with sSF and hyaluronic acid (HA) (sSF + HA). Wilcoxon and Mann–Whitney test