Table 3.
Tendon data: mass, volume, and resting length, and estimated cross-sectional area (CSA), stress, strain, and length change of selected pelvic limb tendons. Estimated parameters calculated using methods described in the text. Data are means (n = 8). Values in parentheses are ranges
| Muscle–tendon unit | Mass (g) | Volume (mm3) | Rest length (mm) | CSA (mm2) | Stress (MPa) | Strain (%) | Length change (mm) |
|---|---|---|---|---|---|---|---|
| Biceps femoris | 0.35 (0.17–0.70) | 29.0 | 40 (24–54) | 0.8 | 29 | 1.9 | 0.8 |
| Flexor digitorum profundus (combined) | 1.35 (1.03–1.66) | 112.8 | 168 (139–253) | 0.7 | 22 | 1.5 | 2.5 |
| Extensor digitorum lateralis | 0.04 (0.01–0.10) | 3.6 | 93 (52–139) | 0.1 | 63 | 4.2 | 3.9 |
| Extensor digitorum longus | 0.36 (0.10–0.60) | 29.5 | 107 (90–152) | 0.8 | 20 | 1.3 | 1.4 |
| Gastrocnemius | 0.38 (0.20–0.73) | 128.6 | 67 (23–85) | 0.3 | 119 | 7.9 | 5.3 |
| Gracilis | 0.12 (0.10–0.22) | 9.6 | 37 (10–69) | 0.2 | 21 | 1.4 | 0.5 |
| Gluteus superficialis | 0.05 (0.02–0.07) | 4.2 | 14 (10–17) | 0.3 | 39 | 2.6 | 0.4 |
| Rectus femoris | 0.52 (0.27–0.96) | 43.0 | 23 (15–30) | 2.2 | 9 | 0.6 | 0.1 |
| Flexor digitorum superficialis | 0.83 (0.30–1.04) | 69.4 | 159 (132–173) | 0.4 | 67 | 4.5 | 7.1 |
| Semimembranosis | 0.31 (0.20–0.53) | 26.0 | 89 (64–110) | 0.3 | 28 | 1.9 | 1.7 |
| Semitendinosis | 0.08 (0.04–0.14) | 6.9 | 34 (20–48) | 0.2 | 18 | 1.2 | 0.4 |
| Tibialis cranialis | 0.07 (0.04–0.11) | 6.2 | 70 (58–74) | 0.1 | 19 | 1.3 | 0.9 |
| Vastus | 0.19 (0.13–0.34) | 16.0 | 9 (8–12) | 0.6 | 9 | 0.4 | 0.1 |