Table 3 Studies examining mechanical properties of ILT tissue
From: Micromechanical and Ultrastructural Properties of Abdominal Aortic Aneurysms
Study | Year | Patients (specimens) | Testing method | Stress | Strain | Relation | Description of specimens (number) | Strength mean (SD) | Stiffness mean (SD) | |||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
Measure | Result (KPa) | Measure | Result (KPa) | |||||||||
Di Martino et al. [69] | 1998 | 6 (21) | UTT | Engineering | Engineering | Linear | Circumferential (21) | Ultimate Stress | 85 (47) | Young’s Modulus | 131 (64) | |
Wang et al. [63] | 2001 | 14 (50) | UTT | Cauchy | Engineering | Hyperelastic | Luminal (28) Longitudinal (14) Circumferential (14) | Ultimate Stress | 520 (70) 540 (70) | Maximum Tangential Modulus | 540 (70) 570 (70) | |
Medial (22) Longitudinal (11) Circumferential (11) | 300 (70) 220 (50) | 330 (70) 270 (40) | ||||||||||
Vande Geest et al. [93] | 2006 | 9 (9) | BTT | Second Piola–Kirchhoff | Green | Linear | Luminal (9) Longitudinal (9) Circumferential (9) | NA—authors measured peak stretch at 40 N/m | Maximum Tangential Modulus | 231 (29) 201 (16) | ||
Hinnen et al. [87] | 2007 | 6 (10) | DMA compression | NA | NA | Linear | All (10) Luminal (4) Lateral (4) | NA | Young’s Modulus |  ~ 38 (15)  ~ 31 (15)  ~ 41 (15) | ||
Gasser et al. [62] | 2008 | 8 (112) | UTT | Cauchy | – | Linear | Circumferential (24) Luminal Medial Abluminal | Ultimate Stress | 156.5 (57.9) 92 (37.5) 47.7 (22.9) | Young’s Modulus | 62.9 (19.2) 47.5 (14.9) 41.5 (15.4) | |
Tong at el. [67] | 2011 | 43 (67) | BTT | Cauchy | Cauchy | – | Luminal ‘Anisotropic’ (10) Circumferential Longitudinal | Engineering stress causing rupture | 60.5 (6.2) | Tangential Modulus at 20 kPa | 208 (55) 291 (69) | |
Luminal ‘Isotropic’ (23) Circumferential Longitudinal | 189 (48) 206 (71) | |||||||||||
Medial (22) Circumferential Longitudinal | 41.2 (6.5) | 137 (39) 145 (47) | ||||||||||
Abluminal (12) Circumferential Longitudinal | 27.9 (4.5) | 108 (31) 102 (23) | ||||||||||
O’Leary et al. [64] | 2014 | 19 (356) | BTT | Cauchy | Cauchy | Nonlinear | Type 1 ILT (10) | Luminal Circumferential Longitudinal | Cauchy stress at strain 1.14 | 8.34 (2.10) 9.31 (2.53) | Tangential Modulus at strain 1.14 | 100.27 (27.85) 120.91 (41.61) |
Medial Circumferential Longitudinal | 8.11 (3.92) 8.21 (2.38) | 94.56 (29.34) 94.67 (23.31) | ||||||||||
Medial/Abluminal Circumferential Longitudinal | 6.35 (2.47) 6.47 (2.64) | 65.13 (27.22) 67.65 (28.54) | ||||||||||
Type 2 ILT (6) | Luminal Circumferential Longitudinal | 11.21 (2.69) 12.78 (3.13) | 134.81 (39.86) 147.52 (29.62) | |||||||||
Medial Circumferential Longitudinal | 3.92 (1.98) 5.78 (3.24) | 39.06 (19.49) 60.58 (33.92) | ||||||||||
Type 3 ILT (3) | Luminal Circumferential Longitudinal | 3.20 (1.49) 3.34 (1.41) | 43.65 (30.83) 37.95 (17.72) | |||||||||