Table 1 Mechanical properties measured for each autograft type (QT, BTB, HT). For all normally distributed data mean and standard deviation are provided. For non-normally distributed data (yield force), median and interquartile range are provided

Cross Sectional Area (mm²)

76.88 ± 13.42

51.77 ± 8.11

72.20 ± 11.80

Failure Force (N)

579.32 ± 155.43

593.03 ± 177.41

828.62 ± 257.89

Stiffness (N/mm)

116.35 ± 51.11

221.24 ± 27.34

192.27 ± 53.46

Youngs Modulus (MPa)

110.81 ± 25.29

207.13 ± 51.02

142.90 ± 40.25

Yield Force (N)

263.90 (76.80)

262.10 (97.70)

325.60 (93.80)

Yield Stress (MPa)

3.54 ± 1.08

6.54 ± 2.93

5.14 ± 1.76

Yield Strain (mm/mm)

0.116 ± 0.042

0.159 ± 0.059

0.128 ± 0.042

Failure Stress (MPa)

7.47 ± 2.27

11.45 ± 3.40

11.77 ± 4.20

Failure Strain (mm/mm)

0.169 ± 0.054

0.205 ± 0.074

0.207 ± 0.041

Plastic Strain (mm/mm)

0.053 ± 0.020

0.046 ± 0.029

0.078 ± 0.032

Elongation After Yield (mm)

3.60 ± 1.73

2.01 ± 0.98

4.01 ± 1.32

Elastic Energy Density (J/m³)

0.26 ± 0.19

0.33 ± 0.19

0.42 ± 0.23

Toughness (J/m³)

0.42 ± 0.26

0.63 ± 0.33

0.90 ± 0.40

Plastic Energy Density (J/m³)

0.16 ± 0.09

0.30 ± 0.30

0.48 ± 0.33