TABLE I.
Summary of Tendon Sizes and Mechanical Properties
| Specimen | CSA [mm2] | Length [mm] | Displacement [mm] | Strain [%] | Young’s Modulus [GPa] | |||
|---|---|---|---|---|---|---|---|---|
| MTS | UEI | MTS | UEI | MTS | UEI | |||
| 1 | 23.0 ± 3.8 | 210 | 6.5 ± 0.8 | 1.3 ± 0.8 | 3.1 ± 0.2 | 3.7 ± 0.8 | 0.78 ± 0.05 | 0.66 ± 0.14 |
| 2 | 24.8 ± 0.6 | 215 | 11.1 ± 0.4 | 3.3 ± 0.1 | 5.2 ± 0.2 | 5.3 ± 0.3 | 0.43 ± 0.02 | 0.42 ± 0.03 |
| 3 | 30.8 ± 1.5 | 230 | 13.0 ± 0.3 | 3.6 ± 1.3 | 5.7 ± 0.1 | 7.2 ± 1.9 | 0.32 ± 0.01 | 0.26 ± 0.04 |
| 4 | 31.3 ± 1.8 | 180 | 7.5 ± 0.1 | 1.6 ± 0.6 | 4.2 ± 0.1 | 5.0 ± 0.5 | 0.43 ± 0.01 | 0.36 ± 0.04 |
| 5 | 28.1 ± 1.6 | 210 | 6.6 ± 0.4 | 1.9 ± 0.7 | 3.2 ± 0.2 | 3.6 ± 0.9 | 0.62 ± 0.04 | 0.57 ± 0.15 |
| Mean ± SD | 27.6 ± 3.6 | 209 ±18 | 8.9 ± 2.9 | 2.3 ± 1.0 | 4.2 ± 1.2 | 5.0 ± 1.5 | 0.52 ± 0.18 | 0.45 ± 0.16 |
The longitudinal displacement, strain, and Young’s modulus values were at near-maximal force (550 N). The donor ages for the five specimens ranged from 68 to 92 years old. Specimen 3 and 5 were from male donors.