| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Structure of middle phalanx of ring finger | Is a | True | Bone structure of middle phalanx of finger | Inferred relationship | Some |  | 
| Structure of middle phalanx of little finger | Is a | True | Bone structure of middle phalanx of finger | Inferred relationship | Some |  | 
| Structure of middle phalanx of index finger | Is a | True | Bone structure of middle phalanx of finger | Inferred relationship | Some |  | 
| Open comminuted fracture of middle phalanx of finger | Finding site | True | Bone structure of middle phalanx of finger | Inferred relationship | Some | 1 | 
| Open fracture of middle phalanx of multiple fingers | Finding site | True | Bone structure of middle phalanx of finger | Inferred relationship | Some | 1 | 
| Closed fracture of middle phalanx of multiple fingers | Finding site | True | Bone structure of middle phalanx of finger | Inferred relationship | Some | 1 | 
| Closed comminuted fracture of middle phalanx of finger | Finding site | True | Bone structure of middle phalanx of finger | Inferred relationship | Some | 1 | 
| Base of middle phalanx of finger | Is a | True | Bone structure of middle phalanx of finger | Inferred relationship | Some |  | 
| Shaft of middle phalanx of finger | Is a | True | Bone structure of middle phalanx of finger | Inferred relationship | Some |  | 
| Neck of middle phalanx of finger | Is a | True | Bone structure of middle phalanx of finger | Inferred relationship | Some |  | 
| Head of middle phalanx of finger | Is a | True | Bone structure of middle phalanx of finger | Inferred relationship | Some |  | 
| Closed fracture finger middle phalanx, base | Finding site | False | Bone structure of middle phalanx of finger | Inferred relationship | Some | 2 | 
| Closed fracture finger middle phalanx, shaft | Finding site | False | Bone structure of middle phalanx of finger | Inferred relationship | Some | 1 | 
| Closed fracture finger middle phalanx, neck | Finding site | False | Bone structure of middle phalanx of finger | Inferred relationship | Some | 1 | 
| Closed fracture finger middle phalanx, head | Finding site | False | Bone structure of middle phalanx of finger | Inferred relationship | Some | 2 | 
| Amputation of finger through middle phalanx | Procedure site - Direct | False | Bone structure of middle phalanx of finger | Inferred relationship | Some | 1 | 
| Entire middle phalanx of hand | Is a | False | Bone structure of middle phalanx of finger | Inferred relationship | Some |  | 
| Fracture of middle phalanx of finger | Finding site | True | Bone structure of middle phalanx of finger | Inferred relationship | Some | 1 | 
| Closed fracture finger middle phalanx, multiple | Finding site | False | Bone structure of middle phalanx of finger | Inferred relationship | Some | 1 | 
| Closed fracture finger middle phalanx | Finding site | True | Bone structure of middle phalanx of finger | Inferred relationship | Some | 1 | 
| Open fracture finger middle phalanx | Finding site | True | Bone structure of middle phalanx of finger | Inferred relationship | Some | 1 | 
| Open fracture finger middle phalanx, multiple | Finding site | False | Bone structure of middle phalanx of finger | Inferred relationship | Some | 1 | 
| Amputation of finger through middle phalanx | Procedure site - Direct | False | Bone structure of middle phalanx of finger | Inferred relationship | Some | 1 | 
| Amputation of finger through middle phalanx | Procedure site - Direct | True | Bone structure of middle phalanx of finger | Inferred relationship | Some | 1 | 
| Closed fracture finger middle phalanx | Finding site | False | Bone structure of middle phalanx of finger | Inferred relationship | Some | 1 | 
| Open fracture finger middle phalanx | Finding site | False | Bone structure of middle phalanx of finger | Inferred relationship | Some | 1 | 
| Amputation of finger through middle phalanx | Procedure site | False | Bone structure of middle phalanx of finger | Inferred relationship | Some | 1 | 
| Fracture of middle phalanx of finger | Finding site | False | Bone structure of middle phalanx of finger | Inferred relationship | Some | 1 | 
| Entire bone of middle phalanx of finger | Is a | True | Bone structure of middle phalanx of finger | Inferred relationship | Some |  | 
| Structure of middle phalanx of middle finger | Is a | True | Bone structure of middle phalanx of finger | Inferred relationship | Some |  | 
| Open reduction of fracture of middle phalanx of finger with internal fixation | Procedure site - Direct | True | Bone structure of middle phalanx of finger | Inferred relationship | Some | 504956809 | 
| Open reduction of fracture of middle phalanx of finger with internal fixation | Procedure site - Direct | True | Bone structure of middle phalanx of finger | Inferred relationship | Some | 1734979692 | 
| Open reduction of fracture of middle phalanx of finger | Procedure site - Direct | True | Bone structure of middle phalanx of finger | Inferred relationship | Some | 1613733119 | 
| Closed fracture finger middle phalanx, multiple | Finding site | False | Bone structure of middle phalanx of finger | Inferred relationship | Some | 1 | 
| Open fracture finger middle phalanx, multiple | Finding site | False | Bone structure of middle phalanx of finger | Inferred relationship | Some | 1 | 
| Traumatic amputation, finger, middle phalanx | Finding site | False | Bone structure of middle phalanx of finger | Inferred relationship | Some | 1 | 
| Epiphysis of middle phalanx of finger | Is a | True | Bone structure of middle phalanx of finger | Inferred relationship | Some |  |