| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Structure of proximal ulnar epiphysis | Is a | True | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier |  | 
| Entire proximal end of ulna | Is a | True | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier |  | 
| Structure of coronoid process of ulna | Is a | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier |  | 
| Structure of ulnar tuberosity | Is a | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier |  | 
| Structure of olecranon | Is a | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier |  | 
| Structure of trochlear fossa of ulna | Is a | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier |  | 
| Structure of radial notch of ulna | Is a | True | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier |  | 
| Structure of articular circumference of ulna | Is a | True | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier |  | 
| Proximal radioulnar synostosis | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Radioulnar synostosis and dislocation of radial head | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Distal radioulnar synostosis | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Fracture of proximal end of ulna | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Fracture of proximal end of radius and ulna | Finding site | True | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 2 | 
| Closed fracture of upper end of radius AND ulna | Finding site | True | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 2 | 
| Closed fracture of upper end of radius AND ulna | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Closed Monteggia's fracture | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 2 | 
| Closed fracture of proximal end of ulna | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Radioulnar synostosis | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Open Monteggia's fracture | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 2 | 
| Manual reduction of closed fracture of proximal end of ulna | Procedure site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 3 | 
| Open fracture of upper end of radius AND ulna | Finding site | True | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Open fracture of upper end of radius AND ulna | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Closed multiple fractures of upper end of ulna | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Open fracture of proximal end of ulna | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Reduction of closed Monteggia type of fracture dislocation at elbow | Procedure site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 3 | 
| Open multiple fractures of upper end of ulna | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Closed fracture of proximal ulna, comminuted | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Closed fracture radius and ulna, proximal | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Closed fracture radius and ulna, proximal | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Open fracture proximal ulna, comminuted | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 2 | 
| Open fracture proximal ulna, comminuted | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Open fracture radius and ulna, proximal | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Open fracture radius and ulna, proximal | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Closed fracture of proximal forearm, unspecified part | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 2 | 
| Closed fracture of proximal forearm, unspecified part | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Closed fracture of proximal forearm not otherwise specified | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 2 | 
| Closed fracture of proximal forearm not otherwise specified | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Open fracture of proximal forearm, unspecified | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Open fracture of proximal forearm, unspecified | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Open fracture of forearm, upper end, NOS | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Open fracture of forearm, upper end, NOS | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Open fracture proximal ulna, comminuted | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 2 | 
| Structure of olecranon | Is a | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier |  | 
| Fracture of olecranon | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Closed fracture olecranon, extra-articular | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 2 | 
| Closed fracture olecranon, intra-articular | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 2 | 
| Open fracture proximal ulna, comminuted | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Open fracture proximal ulna, comminuted | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 2 | 
| Open fracture proximal ulna, comminuted | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 2 | 
| Open fracture proximal ulna, comminuted | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Open fracture proximal ulna, comminuted | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 2 | 
| Open fracture proximal ulna, comminuted | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Monteggia's fracture | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 2 | 
| Manual reduction of closed fracture of proximal end of ulna | Procedure site - Indirect | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Structure of proximal shaft of ulna | Is a | True | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier |  | 
| Open fracture proximal ulna, comminuted | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 2 | 
| Open fracture proximal ulna, comminuted | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Open fracture proximal ulna, comminuted | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 2 | 
| Open fracture proximal ulna, comminuted | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Open fracture proximal ulna, comminuted | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 2 | 
| Open fracture proximal ulna, comminuted | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Manual reduction of closed fracture of proximal end of ulna | Procedure site - Direct | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 2 | 
| Manual reduction of closed fracture of proximal end of ulna | Procedure site - Direct | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Reduction of closed Monteggia type of fracture dislocation at elbow | Procedure site - Direct | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Open fracture proximal ulna, comminuted | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Open fracture proximal ulna, comminuted | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 2 | 
| Open fracture proximal ulna, comminuted | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Open Monteggia's fracture | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Proximal radioulnar synostosis | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Open multiple fractures of upper end of ulna | Finding site | True | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Open fracture of proximal end of ulna | Finding site | True | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Closed multiple fractures of upper end of ulna | Finding site | True | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Open fracture proximal ulna, comminuted | Finding site | True | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Monteggia's fracture | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Closed fracture of proximal end of ulna | Finding site | True | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Closed fracture of proximal ulna, comminuted | Finding site | True | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Fracture of proximal end of ulna | Finding site | True | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Manual reduction of closed fracture of proximal end of ulna | Procedure site - Direct | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Reduction of closed Monteggia type of fracture dislocation at elbow | Procedure site - Direct | True | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Manual reduction of closed fracture of proximal end of ulna | Procedure site - Direct | True | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Bone structure of proximal left ulna | Is a | True | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier |  | 
| Bone structure of proximal right ulna | Is a | True | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier |  | 
| Periarticular bone structure of proximal ulna | Is a | True | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier |  | 
| Proximal radioulnar synostosis | Finding site | True | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 2 | 
| Closed fracture of proximal forearm, unspecified part | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 2 | 
| Closed fracture of proximal forearm not otherwise specified | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 2 | 
| Open fracture of proximal forearm, unspecified | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 | 
| Open fracture of forearm, upper end, NOS | Finding site | False | Bone structure of proximal ulna | Inferred relationship | Existential restriction modifier | 1 |