Research Article
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 |  | 
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| E: elastic modulus; :  Poisson’s ratio; :  density. |