| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Locking screw | Is a | True | Bone screw, device | Inferred relationship | Existential restriction modifier |  | 
| Percutaneous fixation using screw | Direct device | True | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Internal fixation using screw | Direct device | False | Bone screw, device | Inferred relationship | Existential restriction modifier |  | 
| Removal of bone screw from bone | Direct device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Revision to closed reduction and internal fixation of proximal femoral fracture with screw/nail device alone | Using | False | Bone screw, device | Inferred relationship | Existential restriction modifier |  | 
| Revision to closed reduction and internal fixation of proximal femoral fracture with screw/nail and intramedullary device | Using | False | Bone screw, device | Inferred relationship | Existential restriction modifier |  | 
| Revision to closed reduction of fracture and internal fixation with screw(s) | Using | False | Bone screw, device | Inferred relationship | Existential restriction modifier |  | 
| Revision to open reduction and internal fixation of proximal femoral fracture with screw/nail device alone | Direct device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Revision to open reduction and internal fixation of proximal femoral fracture with screw/nail and intramedullary device | Direct device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 2 | 
| Revision to open reduction of fracture and internal fixation with screw(s) | Direct device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Primary internal fixation(without reduction) of proximal femoral fracture with screw/nail device alone | Direct device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 2 | 
| Primary internal fixation(without reduction) of proximal femoral fracture with screw/nail and intramedullary device | Direct device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Revision to internal fixation(without reduction) of proximal femoral fracture with screw/nail device alone | Direct device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Revision to internal fixation(without reduction) of proximal femoral fracture with screw/nail and intramedullary device | Direct device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Revision to closed reduction and internal fixation of proximal femoral fracture with screw/nail device alone | Direct device | False | Bone screw, device | Inferred relationship | Existential restriction modifier |  | 
| Revision to closed reduction and internal fixation of proximal femoral fracture with screw/nail and intramedullary device | Direct device | False | Bone screw, device | Inferred relationship | Existential restriction modifier |  | 
| Revision to closed reduction of fracture and internal fixation with screw(s) | Direct device | False | Bone screw, device | Inferred relationship | Existential restriction modifier |  | 
| Fixation of fracture using screws | Direct device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Fixation of fracture using cannulated screws | Direct device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Fixation of fracture using interfragmentary screws | Direct device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Primary fixation of fracture using screws | Direct device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Revision fixation of fracture using screws | Direct device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Primary screw fixation of fracture without reduction | Direct device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Revision screw fixation of fracture without reduction | Direct device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Fixation of fracture using variable length cannulated screw | Direct device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Fixation of fracture using Herbert screw | Direct device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Primary open reduction of fracture and internal fixation with screw(s) | Direct device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Primary open reduction of fracture of neck of femur and open fixation using dynamic hip screw | Direct device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 2 | 
| Primary open reduction of fracture of small bone and fixation using screw | Direct device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Primary open reduction and internal fixation of proximal femoral fracture with screw/nail device alone | Direct device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Primary open reduction and internal fixation of proximal femoral fracture with screw/nail and intramedullary device | Direct device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Primary open reduction of fracture of neck of femur and open fixation using Charnley compression screw | Direct device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Primary open reduction of fracture of neck of femur and open fixation using Richards screw | Direct device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Primary open reduction of fracture of neck of femur and open fixation using Ross Brown nail | Direct device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Primary open reduction of fragment of bone and fixation using screw | Direct device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Revision to open reduction of fracture and internal fixation with screw(s) | Using | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 2 | 
| Fixation of fracture using screws | Using | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Fixation of fracture using cannulated screws | Using | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Fixation of fracture using interfragmentary screws | Using | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Primary fixation of fracture using screws | Using | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 2 | 
| Revision fixation of fracture using screws | Using | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 2 | 
| Fixation of fracture using variable length cannulated screw | Using | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Fixation of fracture using Herbert screw | Using | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 2 | 
| Revision to open reduction and internal fixation of proximal femoral fracture with screw/nail device alone | Using | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 4 | 
| Revision to open reduction and internal fixation of proximal femoral fracture with screw/nail and intramedullary device | Using | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 3 | 
| Primary internal fixation(without reduction) of proximal femoral fracture with screw/nail device alone | Using | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 3 | 
| Primary internal fixation(without reduction) of proximal femoral fracture with screw/nail and intramedullary device | Using | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 2 | 
| Revision to internal fixation(without reduction) of proximal femoral fracture with screw/nail device alone | Using | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Revision to internal fixation(without reduction) of proximal femoral fracture with screw/nail and intramedullary device | Using | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 2 | 
| Primary screw fixation of fracture without reduction | Using | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 2 | 
| Revision screw fixation of fracture without reduction | Using | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Primary open reduction of fracture and internal fixation with screw(s) | Using device | True | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Revision to open reduction of fracture and internal fixation with screw(s) | Using device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 2 | 
| Revision to open reduction of fracture and internal fixation with screw(s) | Using device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Primary closed reduction of fracture and internal fixation with screw(s) | Using device | True | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Fixation of fracture using screws | Using device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Primary open reduction of fracture of neck of femur and open fixation using dynamic hip screw | Using device | True | Bone screw, device | Inferred relationship | Existential restriction modifier | 2 | 
| Fixation of fracture using cannulated screws | Using device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Internal fixation using screw | Using device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Fixation of fracture using interfragmentary screws | Using device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Primary fixation of fracture using screws | Using device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Revision fixation of fracture using screws | Using device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Fixation of fracture using variable length cannulated screw | Using device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Fixation of fracture using Herbert screw | Using device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Primary open reduction of fracture of small bone and fixation using screw | Using device | True | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Primary open reduction and internal fixation of proximal femoral fracture with screw/nail device alone | Using device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 2 | 
| Primary open reduction and internal fixation of proximal femoral fracture with screw/nail and intramedullary device | Using device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 2 | 
| Revision to open reduction and internal fixation of proximal femoral fracture with screw/nail device alone | Using device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 2 | 
| Revision to open reduction and internal fixation of proximal femoral fracture with screw/nail device alone | Using device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Revision to open reduction and internal fixation of proximal femoral fracture with screw/nail and intramedullary device | Using device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 2 | 
| Revision to open reduction and internal fixation of proximal femoral fracture with screw/nail and intramedullary device | Using device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Closed reduction of fracture of small bone and fixation using screw | Using device | True | Bone screw, device | Inferred relationship | Existential restriction modifier | 2 | 
| Closed reduction of fragment of bone and fixation using screw | Using device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Primary internal fixation(without reduction) of proximal femoral fracture with screw/nail device alone | Using device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Primary internal fixation(without reduction) of proximal femoral fracture with screw/nail and intramedullary device | Using device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 2 | 
| Revision to internal fixation(without reduction) of proximal femoral fracture with screw/nail device alone | Using device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 2 | 
| Revision to internal fixation(without reduction) of proximal femoral fracture with screw/nail and intramedullary device | Using device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Primary closed reduction and internal fixation of proximal femoral fracture with screw/nail device alone | Using device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 4 | 
| Primary closed reduction and internal fixation of proximal femoral fracture with screw/nail and intramedullary device | Using device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Revision to closed reduction and internal fixation of proximal femoral fracture with screw/nail device alone | Using device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 4 | 
| Revision to closed reduction and internal fixation of proximal femoral fracture with screw/nail and intramedullary device | Using device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 3 | 
| Revision to closed reduction of fracture and internal fixation with screw(s) | Using device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 2 | 
| Primary open reduction of fracture dislocation and fixation with screw(s) | Using device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 2 | 
| Revision to open reduction of fracture dislocation and fixation with screw(s) | Using device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 2 | 
| Primary open reduction of fracture of neck of femur and open fixation using Charnley compression screw | Using device | True | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Primary open reduction of fracture of neck of femur and open fixation using Richards screw | Using device | True | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Closed reduction and internal fixation of proximal femoral fracture with Richard's cannulated hip screw | Using device | True | Bone screw, device | Inferred relationship | Existential restriction modifier | 2 | 
| Primary open reduction of fragment of bone and fixation using screw | Using device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 4 | 
| Primary open reduction of fragment of bone and fixation using screw | Using device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 5 | 
| Primary screw fixation of fracture without reduction | Using device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Revision screw fixation of fracture without reduction | Using device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Closed reduction of intracapsular fracture of neck of femur and internal fixation using a dynamic hip screw | Using device | True | Bone screw, device | Inferred relationship | Existential restriction modifier | 2 | 
| Revision to open reduction of fracture and internal fixation with screw(s) | Using device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Primary open reduction of fragment of bone and fixation using screw | Using device | True | Bone screw, device | Inferred relationship | Existential restriction modifier | 2 | 
| Primary open reduction of fragment of bone and fixation using screw | Using device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Revision fixation of fracture using screws | Using device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Revision to open reduction of fracture and internal fixation with screw(s) | Using device | True | Bone screw, device | Inferred relationship | Existential restriction modifier | 2 | 
| Removal of bone screw from bone | Direct device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Revision to open reduction of fracture dislocation and fixation with screw(s) | Using device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 2 | 
| Primary open reduction and internal fixation of proximal femoral fracture with screw/nail device alone | Using device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 1 | 
| Revision to closed reduction of fracture and internal fixation with screw(s) | Using device | False | Bone screw, device | Inferred relationship | Existential restriction modifier | 2 |