Influence of Rib Cage on Static Characteristics of Scoliotic Spine

Table 1

The material attributes of various spine structures.

Structure	Unit type	(MPa)		(T·mm^-3)
Cortical bone	Tetrahedral unit	12000	0.30	1.7-9
Cancellous bone	Tetrahedral unit	150	0.30	1.1-9
Posterior part	Tetrahedral unit	3500	0.30	1.4-9
End plate	Tetrahedral unit	100	0.40	1.2-9
Annulus fibrosus	Tetrahedral unit	4	0.45	1.05-9
Nucleus pulposus	Tetrahedral unit	1	0.499	1.02-9
Ribs	Tetrahedral unit	5000	0.30	2.0-9
Intercostal cartilage	Tetrahedral unit	480	0.40	2.0-9
Sternal	Tetrahedral unit	10000	0.30	2.0-9

E: elastic modulus; : Poisson’s ratio; : density.