Applicable safety analysis and biomechanical study of iliosacral triangular osteosynthesis

Table 1 The material properties used in the finite element models

Materials	Young’s modulus (MPa)	Poisson’s ratio(u)	Reference	ligament	Stiffness (N/mm)	Number of elements	Reference
Titanium screw/rod/plate	110,000	0.3	[24]	Anterior sacroiliac ligament	700	10 × 2	[25]
Cortical bone (Pelvis)	17,000	0.3	[23]	Posterior sacroiliac ligament (long)	1000	4 × 2	[25]
Cancellous bone (Pelvis)	100	0.2	[23]	Posterior sacroiliac ligament (short)	400	10 × 2	[25]
Cortical bone (Lumbar)	12,000	0.3	[23]	Interosseous sacroiliac ligament	2800	4 × 2	[25]
Cancellous bone (Lumbar)	100	0.2	[23]	Sacrospinous ligament	1400	5 × 2	[25]
Posterior bony elements	3500	0.25	[24]	Sacrotuberous ligament	1500	5 × 2	[25]
Articular cartilage	10	0.4	[24]	Superior pubic ligament	500	1 × 1	[25]
Bony endplate	1000	0.4	[24]	Accurate pubic ligament	500	1 × 1	[25]
Cartilage endplate	25	0.25	[24]	Iliolumbar ligament	1000	4 × 2	[25]
Nucleus pulposus	1	0.499	[24]
Matrix of annulus fibrosus	4.2	0.45	[24]
Fibers of annulus fibrosus	450	0.3	[24]
Interpubic disc	5	0.45	[24]

ISSN: 1471-2474