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Table 3 Mean total crack length values with standard deviation for cartilage-off-bone samples, following testing, at all frequencies and substrates investigated, as a combined study

From: Surface damage of bovine articular cartilage-off-bone: the effect of variations in underlying substrate and frequency

Frequency (Hz) Mean total crack length (mm) ± SD
Substrate 1 Substrate 2 Substrate 3 Substrate 4
1 3.01 ± 3.41 2.57 ± 2.42 2.69 ± 2.66 1.19 ± 1.63
10 4.65 ± 5.66 5.65 ± 3.80 8.76 ± 7.70 10.95 ± 9.12
50 5.65 ± 6.54 3.80 ± 3.95 4.25 ± 3.68 3.82 ± 3.36