| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Entire interphalangeal joint of thumb | Is a | True | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier |  | 
| Closed fracture dislocation of interphalangeal joint of thumb | Finding site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Open fracture dislocation of interphalangeal joint of thumb | Finding site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Closed fracture subluxation of interphalangeal joint of thumb | Finding site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Open fracture subluxation of interphalangeal joint of thumb | Finding site | True | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Accessory mobilization of hand interphalangeal joints | Procedure site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier |  | 
| Physiological mobilization of hand interphalangeal joints | Procedure site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier |  | 
| Stabilization of interphalangeal joint of thumb | Procedure site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Arthroplasty of the interphalangeal joint of the thumb | Procedure site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Prosthetic arthroplasty of the interphalangeal joint of the thumb | Procedure site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Prosthetic arthroplasty of the interphalangeal joint of the thumb | Procedure site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Interposition arthroplasty of the interphalangeal joint of the thumb | Procedure site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Interposition arthroplasty of the interphalangeal joint of the thumb | Procedure site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Amputation of thumb through interphalangeal joint | Procedure site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Closed traumatic dislocation of interphalangeal joint of thumb (disorder) | Finding site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Open dislocation of interphalangeal joint of thumb | Finding site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Closed traumatic dislocation, interphalangeal joint,thumb | Finding site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Open traumatic dislocation, interphalangeal joint, thumb | Finding site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Closed traumatic subluxation, interphalangeal joint of thumb | Finding site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Open traumatic subluxation, interphalangeal joint thumb | Finding site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Traumatic amputation, thumb, through interphalangeal joint | Finding site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 2 | 
| Prosthetic arthroplasty of the interphalangeal joint of the thumb | Procedure site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 2 | 
| Interposition arthroplasty of the interphalangeal joint of the thumb | Procedure site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Volar plate injury, thumb, interphalangeal joint | Finding site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Prosthetic arthroplasty of the interphalangeal joint of the thumb | Procedure site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 2 | 
| Interposition arthroplasty of the interphalangeal joint of the thumb | Procedure site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 2 | 
| Prosthetic arthroplasty of the interphalangeal joint of the thumb | Procedure site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 2 | 
| Interposition arthroplasty of the interphalangeal joint of the thumb | Procedure site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 2 | 
| Prosthetic arthroplasty of the interphalangeal joint of the thumb | Procedure site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Interposition arthroplasty of the interphalangeal joint of the thumb | Procedure site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Prosthetic arthroplasty of the interphalangeal joint of the thumb | Procedure site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 2 | 
| Interposition arthroplasty of the interphalangeal joint of the thumb | Procedure site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 2 | 
| Closed dislocation of interphalangeal joint of thumb | Finding site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Prosthetic arthroplasty of the interphalangeal joint of the thumb | Procedure site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 2 | 
| Prosthetic arthroplasty of the interphalangeal joint of the thumb | Procedure site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Interposition arthroplasty of the interphalangeal joint of the thumb | Procedure site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 2 | 
| Interposition arthroplasty of the interphalangeal joint of the thumb | Procedure site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Prosthetic arthroplasty of the interphalangeal joint of the thumb | Procedure site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Prosthetic arthroplasty of the interphalangeal joint of the thumb | Procedure site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 2 | 
| Interposition arthroplasty of the interphalangeal joint of the thumb | Procedure site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 2 | 
| Interposition arthroplasty of the interphalangeal joint of the thumb | Procedure site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Prosthetic arthroplasty of the interphalangeal joint of the thumb | Procedure site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Prosthetic arthroplasty of the interphalangeal joint of the thumb | Procedure site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 2 | 
| Interposition arthroplasty of the interphalangeal joint of the thumb | Procedure site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Interposition arthroplasty of the interphalangeal joint of the thumb | Procedure site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 2 | 
| Prosthetic arthroplasty of the interphalangeal joint of the thumb | Procedure site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Prosthetic arthroplasty of the interphalangeal joint of the thumb | Procedure site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 2 | 
| Interposition arthroplasty of the interphalangeal joint of the thumb | Procedure site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Interposition arthroplasty of the interphalangeal joint of the thumb | Procedure site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 2 | 
| Stabilization of interphalangeal joint of thumb | Procedure site - Direct | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Arthroplasty of the interphalangeal joint of the thumb | Procedure site - Direct | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Prosthetic arthroplasty of the interphalangeal joint of the thumb | Procedure site - Indirect | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Prosthetic arthroplasty of the interphalangeal joint of the thumb | Procedure site - Direct | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 2 | 
| Interposition arthroplasty of the interphalangeal joint of the thumb | Procedure site - Direct | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 2 | 
| Interposition arthroplasty of the interphalangeal joint of the thumb | Procedure site - Direct | True | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Amputation of thumb through interphalangeal joint | Procedure site - Direct | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Closed fracture subluxation of interphalangeal joint of thumb | Finding site | True | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Open fracture dislocation of interphalangeal joint of thumb | Finding site | True | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Open fracture subluxation of interphalangeal joint of thumb | Finding site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 2 | 
| Volar plate injury, thumb, interphalangeal joint | Finding site | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Closed traumatic subluxation, interphalangeal joint of thumb | Finding site | True | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Amputation of thumb through interphalangeal joint | Procedure site - Direct | True | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Closed dislocation of interphalangeal joint of thumb | Finding site | True | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Prosthetic arthroplasty of the interphalangeal joint of the thumb | Procedure site - Direct | True | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 2 | 
| Prosthetic arthroplasty of the interphalangeal joint of the thumb | Procedure site - Indirect | True | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Arthroplasty of the interphalangeal joint of the thumb | Procedure site - Direct | True | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Closed fracture dislocation of interphalangeal joint of thumb | Finding site | True | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Open traumatic subluxation, interphalangeal joint thumb | Finding site | True | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Open traumatic dislocation, interphalangeal joint, thumb | Finding site | True | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Stabilization of interphalangeal joint of thumb | Procedure site - Direct | True | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Interposition arthroplasty of the interphalangeal joint of the thumb | Procedure site - Direct | True | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 2 | 
| Prosthetic arthroplasty of the interphalangeal joint of the thumb | Procedure site - Direct | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 2 | 
| Arthroplasty of the interphalangeal joint of the thumb | Procedure site - Direct | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Proximal interphalangeal joint structure of first digit of forelimb | Is a | False | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier |  | 
| Traumatic dislocation of interphalangeal joint of thumb | Finding site | True | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Structure of interphalangeal joint of right thumb | Is a | True | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier |  | 
| Structure of interphalangeal joint of left thumb | Is a | True | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier |  | 
| Mallet thumb with closed tendon injury | Finding site | True | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 2 | 
| Structure of ligament of interphalangeal joint of thumb | Is a | True | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier |  | 
| Open fracture thumb distal phalanx, mallet | Finding site | True | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 2 | 
| Mallet thumb with open tendon injury | Finding site | True | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 | 
| Closed fracture thumb distal phalanx, mallet | Finding site | True | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 2 | 
| Traumatic amputation, thumb, through interphalangeal joint | Finding site | True | Structure of interphalangeal joint of thumb | Inferred relationship | Existential restriction modifier | 1 |