| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Closed fracture thoracic vertebra | Is a | True | Closed fracture of vertebral column | Inferred relationship | Existential restriction modifier |  | 
| Closed fracture thoracic vertebra, burst | Is a | False | Closed fracture of vertebral column | Inferred relationship | Existential restriction modifier |  | 
| Closed fracture thoracic vertebra, wedge | Is a | False | Closed fracture of vertebral column | Inferred relationship | Existential restriction modifier |  | 
| Closed fracture thoracic vertebra, spinous process | Is a | False | Closed fracture of vertebral column | Inferred relationship | Existential restriction modifier |  | 
| Closed fracture thoracic vertebra, tricolumnar | Is a | False | Closed fracture of vertebral column | Inferred relationship | Existential restriction modifier |  | 
| Closed fracture lumbar vertebra, burst | Is a | False | Closed fracture of vertebral column | Inferred relationship | Existential restriction modifier |  | 
| Closed fracture lumbar vertebra, wedge | Is a | False | Closed fracture of vertebral column | Inferred relationship | Existential restriction modifier |  | 
| Closed fracture lumbar vertebra, spinous process | Is a | False | Closed fracture of vertebral column | Inferred relationship | Existential restriction modifier |  | 
| Closed fracture lumbar vertebra, tricolumnar | Is a | False | Closed fracture of vertebral column | Inferred relationship | Existential restriction modifier |  | 
| Closed fracture sacrum | Is a | True | Closed fracture of vertebral column | Inferred relationship | Existential restriction modifier |  | 
| Closed fracture of cervical spine | Is a | True | Closed fracture of vertebral column | Inferred relationship | Existential restriction modifier |  | 
| Closed multiple fractures of thoracic spine | Is a | False | Closed fracture of vertebral column | Inferred relationship | Existential restriction modifier |  | 
| Cauda equina injury co-occurrent and due to closed fracture of sacrum AND/OR coccyx | Is a | False | Closed fracture of vertebral column | Inferred relationship | Existential restriction modifier |  | 
| Closed fracture of vertebral column with spinal cord injury | Is a | True | Closed fracture of vertebral column | Inferred relationship | Existential restriction modifier |  | 
| Closed fracture of vertebral column without spinal cord injury | Is a | False | Closed fracture of vertebral column | Inferred relationship | Existential restriction modifier |  | 
| Closed fracture pelvis, coccyx | Is a | False | Closed fracture of vertebral column | Inferred relationship | Existential restriction modifier |  | 
| Closed fracture of thoracic spine with spinal cord lesion | Is a | False | Closed fracture of vertebral column | Inferred relationship | Existential restriction modifier |  | 
| Closed fracture of lumbar spine with spinal cord lesion | Is a | False | Closed fracture of vertebral column | Inferred relationship | Existential restriction modifier |  | 
| Closed fracture of coccyx with spinal cord lesion | Is a | False | Closed fracture of vertebral column | Inferred relationship | Existential restriction modifier |  | 
| Closed fracture lumbar vertebra | Is a | True | Closed fracture of vertebral column | Inferred relationship | Existential restriction modifier |  | 
| Closed fracture pelvis, coccyx | Is a | False | Closed fracture of vertebral column | Inferred relationship | Existential restriction modifier |  | 
| Cauda equina lesion co-occurrent and due to closed spinal fracture | Is a | True | Closed fracture of vertebral column | Inferred relationship | Existential restriction modifier |  | 
| Closed fracture of coccyx | Is a | True | Closed fracture of vertebral column | Inferred relationship | Existential restriction modifier |  | 
| Closed fracture of sacrum AND/OR coccyx with spinal cord injury | Due to | False | Closed fracture of vertebral column | Inferred relationship | Existential restriction modifier |  | 
| Complete cauda equina lesion co-occurrent and due to closed fracture of sacrum AND/OR coccyx | Due to | False | Closed fracture of vertebral column | Inferred relationship | Existential restriction modifier | 3 | 
| Cauda equina injury co-occurrent and due to closed fracture of sacrum AND/OR coccyx | Due to | False | Closed fracture of vertebral column | Inferred relationship | Existential restriction modifier | 1 | 
| Cauda equina lesion co-occurrent and due to closed spinal fracture | Due to | False | Closed fracture of vertebral column | Inferred relationship | Existential restriction modifier | 3 |