| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Senile osteopenia | Is a | True | Osteopenia | Inferred relationship | Existential restriction modifier |  | 
| Steroid-induced osteopenia | Is a | True | Osteopenia | Inferred relationship | Existential restriction modifier |  | 
| Family history of osteopenia | Associated finding | False | Osteopenia | Inferred relationship | Existential restriction modifier | 1 | 
| Family history of osteopenia | Associated finding | True | Osteopenia | Inferred relationship | Existential restriction modifier | 1 | 
| Osteopenia of prematurity | Is a | True | Osteopenia | Inferred relationship | Existential restriction modifier |  | 
| Family history of osteopenia | Associated finding | False | Osteopenia | Inferred relationship | Existential restriction modifier | 1 | 
| History of osteopenia resolved | Associated finding | True | Osteopenia | Inferred relationship | Existential restriction modifier | 1 | 
| History of osteopenia | Associated finding | True | Osteopenia | Inferred relationship | Existential restriction modifier | 1 | 
| Neonatal osteopenia | Is a | True | Osteopenia | Inferred relationship | Existential restriction modifier |  | 
| Eiken syndrome | Is a | True | Osteopenia | Inferred relationship | Existential restriction modifier |  | 
| Global developmental delay, osteopenia, ectodermal defect syndrome | Is a | True | Osteopenia | Inferred relationship | Existential restriction modifier |  | 
| Osteopenia with high fracture risk | Is a | True | Osteopenia | Inferred relationship | Existential restriction modifier |  | 
| Osteopenia, myopia, hearing loss, intellectual disability, facial dysmorphism syndrome | Is a | False | Osteopenia | Inferred relationship | Existential restriction modifier |  | 
| Osteopenia, intellectual disability, sparse hair syndrome | Is a | True | Osteopenia | Inferred relationship | Existential restriction modifier |  | 
| Osteopenia caused by drug | Is a | True | Osteopenia | Inferred relationship | Existential restriction modifier |  | 
| Premenopausal idiopathic osteopenia | Is a | True | Osteopenia | Inferred relationship | Existential restriction modifier |  | 
| Osteopenia following menopause | Is a | True | Osteopenia | Inferred relationship | Existential restriction modifier |  | 
| Osteopenia due to disuse | Is a | True | Osteopenia | Inferred relationship | Existential restriction modifier |  | 
| Craniofacial dysplasia osteopenia syndrome | Is a | True | Osteopenia | Inferred relationship | Existential restriction modifier |  | 
| Neurodevelopmental delay, seizures, ophthalmic anomalies, osteopenia, cerebellar atrophy syndrome | Is a | True | Osteopenia | Inferred relationship | Existential restriction modifier |  |