| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Entire distal phalanx of thumb | Is a | True | Bone structure of distal phalanx of thumb | Inferred relationship | Some |  | 
| Structure of base of distal phalanx of thumb (body structure) | Is a | True | Bone structure of distal phalanx of thumb | Inferred relationship | Some |  | 
| Shaft of distal phalanx of thumb | Is a | True | Bone structure of distal phalanx of thumb | Inferred relationship | Some |  | 
| Neck of distal phalanx of thumb | Is a | True | Bone structure of distal phalanx of thumb | Inferred relationship | Some |  | 
| Head of distal phalanx of thumb | Is a | True | Bone structure of distal phalanx of thumb | Inferred relationship | Some |  | 
| Epiphysis of distal phalanx of thumb | Is a | True | Bone structure of distal phalanx of thumb | Inferred relationship | Some |  | 
| Structure of tuberosity of distal phalanx of thumb | Is a | True | Bone structure of distal phalanx of thumb | Inferred relationship | Some |  | 
| Closed fracture thumb distal phalanx | Finding site | False | Bone structure of distal phalanx of thumb | Inferred relationship | Some | 1 | 
| Closed fracture thumb distal phalanx | Finding site | False | Bone structure of distal phalanx of thumb | Inferred relationship | Some | 2 | 
| Open fracture of distal phalanx of thumb (disorder) | Finding site | False | Bone structure of distal phalanx of thumb | Inferred relationship | Some | 1 | 
| Open fracture of distal phalanx of thumb (disorder) | Finding site | False | Bone structure of distal phalanx of thumb | Inferred relationship | Some | 2 | 
| Amputation of thumb through distal phalanx | Procedure site | False | Bone structure of distal phalanx of thumb | Inferred relationship | Some | 1 | 
| Fracture distal phalanx of thumb | Finding site | False | Bone structure of distal phalanx of thumb | Inferred relationship | Some | 1 | 
| Closed fracture thumb distal phalanx, base | Finding site | False | Bone structure of distal phalanx of thumb | Inferred relationship | Some | 2 | 
| Closed fracture thumb distal phalanx, shaft | Finding site | False | Bone structure of distal phalanx of thumb | Inferred relationship | Some | 2 | 
| Closed fracture thumb distal phalanx, tuft | Finding site | False | Bone structure of distal phalanx of thumb | Inferred relationship | Some | 1 | 
| Closed fracture thumb distal phalanx, mallet | Finding site | False | Bone structure of distal phalanx of thumb | Inferred relationship | Some | 1 | 
| Open fracture thumb distal phalanx, base | Finding site | False | Bone structure of distal phalanx of thumb | Inferred relationship | Some | 2 | 
| Open fracture thumb distal phalanx, shaft | Finding site | False | Bone structure of distal phalanx of thumb | Inferred relationship | Some | 2 | 
| Open fracture thumb distal phalanx, tuft | Finding site | False | Bone structure of distal phalanx of thumb | Inferred relationship | Some | 1 | 
| Open fracture thumb distal phalanx, mallet | Finding site | False | Bone structure of distal phalanx of thumb | Inferred relationship | Some | 1 | 
| Amputation of thumb through distal phalanx | Procedure site - Direct (attribute) | False | Bone structure of distal phalanx of thumb | Inferred relationship | Some | 1 | 
| Open fracture thumb distal phalanx, tuft | Finding site | True | Bone structure of distal phalanx of thumb | Inferred relationship | Some | 1 | 
| Closed fracture thumb distal phalanx, mallet | Finding site | True | Bone structure of distal phalanx of thumb | Inferred relationship | Some | 1 | 
| Fracture distal phalanx of thumb | Finding site | True | Bone structure of distal phalanx of thumb | Inferred relationship | Some | 1 | 
| Open fracture thumb distal phalanx, mallet | Finding site | True | Bone structure of distal phalanx of thumb | Inferred relationship | Some | 1 | 
| Closed fracture thumb distal phalanx, tuft | Finding site | True | Bone structure of distal phalanx of thumb | Inferred relationship | Some | 1 | 
| Amputation of thumb through distal phalanx | Procedure site - Direct (attribute) | True | Bone structure of distal phalanx of thumb | Inferred relationship | Some | 1 | 
| Open fracture of distal phalanx of thumb (disorder) | Finding site | True | Bone structure of distal phalanx of thumb | Inferred relationship | Some | 1 | 
| Closed fracture thumb distal phalanx | Finding site | True | Bone structure of distal phalanx of thumb | Inferred relationship | Some | 1 | 
| Percutaneous skeletal fixation of distal phalangeal fracture of thumb (procedure) | Procedure site - Direct (attribute) | False | Bone structure of distal phalanx of thumb | Inferred relationship | Some | 1 | 
| Open reduction of fracture of distal phalanx of thumb with internal fixation (procedure) | Procedure site - Direct (attribute) | True | Bone structure of distal phalanx of thumb | Inferred relationship | Some | 1 | 
| Open reduction of fracture of distal phalanx of thumb with internal fixation (procedure) | Procedure site - Direct (attribute) | True | Bone structure of distal phalanx of thumb | Inferred relationship | Some | 2 | 
| Percutaneous skeletal fixation of distal phalangeal fracture of thumb (procedure) | Procedure site - Direct (attribute) | True | Bone structure of distal phalanx of thumb | Inferred relationship | Some | 1 | 
| Bone structure of distal phalanx of left thumb (body structure) | Is a | True | Bone structure of distal phalanx of thumb | Inferred relationship | Some |  | 
| Bone structure of distal phalanx of right thumb (body structure) | Is a | True | Bone structure of distal phalanx of thumb | Inferred relationship | Some |  | 
| Traumatic amputation, thumb tip | Finding site | False | Bone structure of distal phalanx of thumb | Inferred relationship | Some | 1 | 
| Brachydactyly type D (disorder) | Finding site | True | Bone structure of distal phalanx of thumb | Inferred relationship | Some | 1 | 
| Traumatic amputation thumb tip, type 3 (partial loss of terminal phalanx with corresponding loss of pulp and nail but not involving lunula) (disorder) | Finding site | True | Bone structure of distal phalanx of thumb | Inferred relationship | Some | 2 | 
| Traumatic amputation thumb tip, type 4 (partial loss of terminal phalanx, pulp and nail including lunula) (disorder) | Finding site | True | Bone structure of distal phalanx of thumb | Inferred relationship | Some | 3 |