| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Entire extensor pollicis longus muscle tendon | Is a | True | Structure of extensor pollicis longus muscle tendon | Inferred relationship | Existential restriction modifier |  | 
| Rupture of extensor pollicis longus | Finding site | False | Structure of extensor pollicis longus muscle tendon | Inferred relationship | Existential restriction modifier | 1 | 
| Sprain, extensor pollicis longus tendon | Finding site | False | Structure of extensor pollicis longus muscle tendon | Inferred relationship | Existential restriction modifier | 1 | 
| Mallet thumb with closed tendon injury | Finding site | False | Structure of extensor pollicis longus muscle tendon | Inferred relationship | Existential restriction modifier | 5 | 
| Complete division, extensor pollicis longus tendon | Finding site | True | Structure of extensor pollicis longus muscle tendon | Inferred relationship | Existential restriction modifier | 1 | 
| Mallet thumb with open tendon injury | Finding site | False | Structure of extensor pollicis longus muscle tendon | Inferred relationship | Existential restriction modifier | 2 | 
| Partial division, extensor pollicis longus tendon | Finding site | True | Structure of extensor pollicis longus muscle tendon | Inferred relationship | Existential restriction modifier | 1 | 
| Mallet thumb with closed tendon injury | Finding site | False | Structure of extensor pollicis longus muscle tendon | Inferred relationship | Existential restriction modifier | 1 | 
| Mallet thumb with open tendon injury | Finding site | False | Structure of extensor pollicis longus muscle tendon | Inferred relationship | Existential restriction modifier | 6 | 
| Mallet thumb with open tendon injury | Finding site | False | Structure of extensor pollicis longus muscle tendon | Inferred relationship | Existential restriction modifier | 3 | 
| Mallet thumb with closed tendon injury | Finding site | False | Structure of extensor pollicis longus muscle tendon | Inferred relationship | Existential restriction modifier | 6 | 
| Mallet thumb with open tendon injury | Finding site | False | Structure of extensor pollicis longus muscle tendon | Inferred relationship | Existential restriction modifier | 1 | 
| Mallet thumb with closed tendon injury | Finding site | False | Structure of extensor pollicis longus muscle tendon | Inferred relationship | Existential restriction modifier | 7 | 
| Mallet thumb with open tendon injury | Finding site | False | Structure of extensor pollicis longus muscle tendon | Inferred relationship | Existential restriction modifier | 2 | 
| Mallet thumb with closed tendon injury | Finding site | False | Structure of extensor pollicis longus muscle tendon | Inferred relationship | Existential restriction modifier | 8 | 
| Mallet thumb with open tendon injury | Finding site | False | Structure of extensor pollicis longus muscle tendon | Inferred relationship | Existential restriction modifier | 1 | 
| Mallet thumb with open tendon injury | Finding site | False | Structure of extensor pollicis longus muscle tendon | Inferred relationship | Existential restriction modifier | 3 | 
| Mallet thumb with closed tendon injury | Finding site | False | Structure of extensor pollicis longus muscle tendon | Inferred relationship | Existential restriction modifier | 1 | 
| Mallet thumb with closed tendon injury | Finding site | False | Structure of extensor pollicis longus muscle tendon | Inferred relationship | Existential restriction modifier | 1 | 
| Radial styloid tenosynovitis | Finding site | False | Structure of extensor pollicis longus muscle tendon | Inferred relationship | Existential restriction modifier | 2 | 
| Sprain, extensor pollicis longus tendon | Finding site | False | Structure of extensor pollicis longus muscle tendon | Inferred relationship | Existential restriction modifier | 1 | 
| Mallet thumb with open tendon injury | Finding site | False | Structure of extensor pollicis longus muscle tendon | Inferred relationship | Existential restriction modifier | 1 | 
| Complete division, extensor pollicis longus tendon | Finding site | False | Structure of extensor pollicis longus muscle tendon | Inferred relationship | Existential restriction modifier | 1 | 
| Mallet thumb with closed tendon injury | Finding site | False | Structure of extensor pollicis longus muscle tendon | Inferred relationship | Existential restriction modifier | 1 | 
| Partial division, extensor pollicis longus tendon | Finding site | False | Structure of extensor pollicis longus muscle tendon | Inferred relationship | Existential restriction modifier | 1 | 
| Rupture of extensor pollicis longus | Finding site | True | Structure of extensor pollicis longus muscle tendon | Inferred relationship | Existential restriction modifier | 1 | 
| Inflammation of extensor pollicis longus muscle tendon | Finding site | False | Structure of extensor pollicis longus muscle tendon | Inferred relationship | Existential restriction modifier | 1 | 
| Inflammation of extensor pollicis longus muscle tendon | Finding site | False | Structure of extensor pollicis longus muscle tendon | Inferred relationship | Existential restriction modifier | 1 | 
| Complete division, extensor pollicis longus tendon | Finding site | False | Structure of extensor pollicis longus muscle tendon | Inferred relationship | Existential restriction modifier | 2 | 
| Partial division, extensor pollicis longus tendon | Finding site | False | Structure of extensor pollicis longus muscle tendon | Inferred relationship | Existential restriction modifier | 2 | 
| Inflammation of extensor pollicis longus muscle tendon | Finding site | True | Structure of extensor pollicis longus muscle tendon | Inferred relationship | Existential restriction modifier | 2 | 
| Strain of extensor pollicis longus tendon | Finding site | True | Structure of extensor pollicis longus muscle tendon | Inferred relationship | Existential restriction modifier | 1 | 
| Mallet thumb with closed tendon injury | Finding site | False | Structure of extensor pollicis longus muscle tendon | Inferred relationship | Existential restriction modifier | 3 | 
| Open fracture thumb distal phalanx, mallet | Finding site | False | Structure of extensor pollicis longus muscle tendon | Inferred relationship | Existential restriction modifier | 3 | 
| Closed fracture thumb distal phalanx, mallet | Finding site | False | Structure of extensor pollicis longus muscle tendon | Inferred relationship | Existential restriction modifier | 3 | 
| Transfer of tendon of extensor indicis to extensor pollicis longus muscle tendon | Procedure site - Direct | True | Structure of extensor pollicis longus muscle tendon | Inferred relationship | Existential restriction modifier | 2 |