| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Shafts of tibia and/or fibula in combination | Is a | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier |  | 
| Tibia and fibula, proximal (combined site) | Is a | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier |  | 
| Tibia and fibula, midshaft (combined site) | Is a | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier |  | 
| Tibia and fibula, distal (combined site) | Is a | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier |  | 
| Bone structure of proximal tibia and/or fibula | Is a | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier |  | 
| Bone structure of distal tibia and/or fibula | Is a | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier |  | 
| Bone structure of tibia | Is a | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier |  | 
| Bone structure of fibula | Is a | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier |  | 
| Closed reduction of fracture of tibia and/or fibula | Procedure site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Creation of tibiofibular synostosis | Procedure site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Transverse deficiency lower limb - through tibia/fibula | Finding site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Multiple fractures of lower leg | Finding site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Tibia and/or fibula X-ray | Procedure site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Open fracture of lower leg | Finding site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Fracture of lower leg | Finding site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Closed fracture of lower leg | Finding site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 2 | 
| Acute osteomyelitis of lower leg | Finding site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Chronic osteomyelitis of lower leg | Finding site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Periostitis without mention of osteomyelitis, of the lower leg | Finding site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier |  | 
| Tuberculosis of the lower leg bone | Finding site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier |  | 
| Poliomyelitis osteopathy of the lower leg | Finding site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier |  | 
| Fracture of tibia and/or fibula due to birth trauma | Finding site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| X-ray shaft of tibia/fibula | Procedure site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Pathological fracture - lower leg | Finding site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Fracture malunion - lower leg | Finding site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Closed fracture of tibia and fibula, unspecified part | Finding site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Open fracture of tibia and fibula, unspecified part | Finding site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Open fracture of tibia and fibula, unspecified part, NOS | Finding site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Fracture of tibia and fibula, NOS | Finding site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Closed fracture of tibia and fibula, unspecified part, NOS | Finding site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Closed fracture of tibia and fibula, shaft | Finding site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Bimalleolar fracture of ankle | Finding site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Fracture of shaft of tibia and fibula | Finding site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Closed bimalleolar fracture | Finding site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Closed fracture of tuberosity of tibia | Finding site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Fracture of upper end of lower leg | Finding site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Congenital bowing of tibia and/or fibula | Finding site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Open fracture of tibia and/or fibula, shaft | Finding site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Closed fracture of tibia and fibula, proximal not otherwise specified | Finding site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Closed fracture of tibia and fibula, shaft, NOS | Finding site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Tibia X-ray | Procedure site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Fibula X-ray | Procedure site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Closed reduction of fracture of tibia and fibula | Procedure site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Closed reduction of fracture of tibia and fibula with internal fixation | Procedure site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 3 | 
| Closed reduction of fracture of tibia and/or fibula | Procedure site - Direct | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Creation of tibiofibular synostosis | Procedure site - Direct | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Tibia and/or fibula X-ray | Procedure site - Direct | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Closed reduction of fracture of tibia and fibula | Procedure site - Indirect | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Closed reduction of fracture of tibia and fibula | Procedure site - Direct | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Closed reduction of fracture of tibia and fibula with internal fixation | Procedure site - Direct | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 2 | 
| Fracture of tibia and/or fibula due to birth trauma | Finding site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Pathological fracture - lower leg | Finding site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Closed reduction of fracture of tibia and fibula | Procedure site - Direct | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Congenital bowing of tibia and/or fibula | Finding site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Fracture malunion - lower leg | Finding site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Transverse deficiency lower limb - through tibia/fibula | Finding site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Closed reduction of fracture of tibia and/or fibula | Procedure site - Direct | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Open fracture of tibia and/or fibula, shaft | Finding site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Tibia and/or fibula X-ray | Procedure site - Direct | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Longitudinal deficiency of tibia AND/OR fibula | Finding site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Longitudinal deficiency of tibia AND/OR fibula | Finding site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Osteomyelitis of lower leg | Finding site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Infection of bone of tibia and/or fibula | Finding site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier |  | 
| Acute osteomyelitis of lower leg | Finding site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 2 | 
| Acute osteomyelitis of lower leg | Finding site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| X-ray of lower leg for bone length measurement | Procedure site - Direct | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Reduction of open fracture of lower leg with internal fixation | Procedure site - Direct | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 2 | 
| Reduction of open fracture of lower leg with internal fixation | Procedure site - Direct | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 3 | 
| Debridement of open fracture of lower leg | Procedure site - Direct | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 1 | 
| Chronic osteomyelitis of lower leg | Finding site | False | Bone structure of tibia and/or fibula | Inferred relationship | Existential restriction modifier | 3 |