| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Tarsometatarsal arthrodesis, transverse | Method | False | Fusion - action | Inferred relationship | Some | 1 | 
| Transoral fusion of atlantoaxial joint | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Radiocarpal fusion | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Chemical open pleurodesis | Method | False | Fusion - action | Inferred relationship | Some | 1 | 
| Transfer of extensor hallucis longus tendon to head of first metatarsal and fusion of interphalangeal joints | Method | False | Fusion - action | Inferred relationship | Some | 2 | 
| Tarsometatarsal arthrodesis, transverse, with osteotomy as for flatfoot correction | Method | False | Fusion - action | Inferred relationship | Some | 1 | 
| Posterior fusion of atlantoaxial joint using transarticular screw | Method | False | Fusion - action | Inferred relationship | Some | 1 | 
| Revisional fusion of occipitocervical junction | Method | False | Fusion - action | Inferred relationship | Some | 1 | 
| Revisional posterior fusion of atlantoaxial joint using pedicle screw | Method | False | Fusion - action | Inferred relationship | Some | 1 | 
| Chemical pleurodesis | Method | False | Fusion - action | Inferred relationship | Some | 1 | 
| Midtarsal arthrodesis, transverse, with osteotomy as for flatfoot correction | Method | False | Fusion - action | Inferred relationship | Some | 1 | 
| Tarsometatarsal arthrodesis, multiple | Method | False | Fusion - action | Inferred relationship | Some | 1 | 
| Midtarsal arthrodesis, transverse | Method | False | Fusion - action | Inferred relationship | Some | 1 | 
| Fusion of first metatarsophalangeal joint for hallux valgus repair | Method | False | Fusion - action | Inferred relationship | Some | 1 | 
| Tendon transfer and arthrodesis to correct claw toe | Method | True | Fusion - action | Inferred relationship | Some | 2 | 
| Arthrodesis of interphalangeal joint of finger | Method | False | Fusion - action | Inferred relationship | Some | 1 | 
| Localized fusion of joints of midfoot and forefoot | Method | False | Fusion - action | Inferred relationship | Some | 1 | 
| Tarsometatarsal fusion | Method | False | Fusion - action | Inferred relationship | Some | 1 | 
| Tarsometatarsal arthrodesis, single joint | Method | False | Fusion - action | Inferred relationship | Some | 1 | 
| Metatarsophalangeal fusion | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Arthrodesis of carpometacarpal joint of digits, other than thumb | Method | False | Fusion - action | Inferred relationship | Some | 1 | 
| Arthrodesis of distal radioulnar joint and segmental resection of ulna with bone graft | Method | False | Fusion - action | Inferred relationship | Some | 1 | 
| Arthrodesis of interphalangeal joint of finger with internal fixation | Method | False | Fusion - action | Inferred relationship | Some | 1 | 
| Tibiotalar arthrodesis | Method | False | Fusion - action | Inferred relationship | Some | 1 | 
| Bost radiocarpal fusion | Method | False | Fusion - action | Inferred relationship | Some | 1 | 
| Primary arthrodesis interphalangeal joint of great toe | Method | False | Fusion - action | Inferred relationship | Some | 1 | 
| Intra-articular arthrodesis subtalar joint | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Arthrodesis of carpometacarpal joint of digits, other than thumb | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Extra-articular arthrodesis subtalar joint | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Transfer of extensor hallucis longus tendon to head of first metatarsal and fusion of interphalangeal joints | Method | True | Fusion - action | Inferred relationship | Some | 2 | 
| Localized fusion of joints of midfoot and forefoot | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Arthrodesis of distal radioulnar joint and segmental resection of ulna with bone graft | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Intercarpal fusion with autograft | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Subtalar arthrodesis | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Posterior epiphysiodesis of spine for correction of deformity | Method | True | Fusion - action | Inferred relationship | Some | 2 | 
| Lumbar spinal fusion | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Primary posterolateral fusion lumbar spine | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Cervical arthrodesis by posterior technique | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Primary posterior decompression lumbar spine and fusion | Method | True | Fusion - action | Inferred relationship | Some | 3 | 
| Epiphysiodesis of femur | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Epiphysiodesis of tibia | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Fusion of joint of lumbar spine with internal fixation by posterior approach | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Fusion of sacroiliac joint by anterior approach | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Fusion of atlantooccipital joint with internal fixation by posterior approach | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Fusion of joint of lumbar spine with internal fixation by anterior approach | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Lumbosacral arthrodesis | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Primary fusion of cervical spine | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Fusion of joint of thoracic spine with internal fixation by posterior approach | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Cervical arthrodesis | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Bosworth operation on lumbar spine | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Lumbar spinal fusion for pseudoarthrosis | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Combined anterior and posterior epiphysiodesis of spine for correction of deformity | Method | True | Fusion - action | Inferred relationship | Some | 2 | 
| Arthrodesis by posterior technique of atlas-axis with internal fixation | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Arthrodesis of toe | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Fusion of posterior lumbar spine | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Fusion of scaphotrapezial joint | Method | False | Fusion - action | Inferred relationship | Some | 1 | 
| Fusion of cervicothoracic region of spine with internal fixation by posterior approach | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Primary posterior fusion of lumbar spine | Method | False | Fusion - action | Inferred relationship | Some | 2 | 
| Fusion of cervicothoracic region of spine with internal fixation by anterior approach | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Laminectomy with spinal fusion | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Fusion of joint of cervical spine with internal fixation by posterior approach | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| McBride procedure and arthrodesis of first tarsometatarsal joint | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Primary transforaminal interbody fusion of joint of lumbar spine | Method | False | Fusion - action | Inferred relationship | Some | 2 | 
| Fusion of joint of thoracic spine with internal fixation by anterior approach | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Refusion of spine | Method | True | Fusion - action | Inferred relationship | Some | 2 | 
| Fusion of cervicothoracic region of spine by anterior approach | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Arthrodesis of scapholunate joint | Method | False | Fusion - action | Inferred relationship | Some | 1 | 
| Fusion of lumbosacral region of spine with internal fixation by posterior approach | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Fusion of sacroiliac joint by posterior approach | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Spinal epiphysiodesis | Method | False | Fusion - action | Inferred relationship | Some | 2 | 
| Primary arthrodesis of interphalangeal joint of toe | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Chemical pleurodesis | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Revisional fusion of joint of spine | Method | False | Fusion - action | Inferred relationship | Some | 2 | 
| Fusion of joint of thoracic spine by anterior approach | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Fusion of thoracolumbar region of spine with internal fixation by anterior approach | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Fusion of thoracolumbar region of spine with internal fixation by posterior approach | Method | True | Fusion - action | Inferred relationship | Some | 2 | 
| Fusion of thoracolumbar region of spine with internal fixation by posterior approach | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Cervical spinal fusion for pseudoarthrosis | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Fusion of thoracolumbar region of spine by anterior approach | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Fusion of cervicothoracic joint by anterior approach | Method | False | Fusion - action | Inferred relationship | Some | 1 | 
| Cervical arthrodesis by anterior technique | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Fusion of cervicothoracic joint by posterior approach | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Fusion of lumbosacral region of spine with internal fixation by anterior approach | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Fusion of joints of spine from T5 through L1 by posterior approach | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Fusion of joints of spine from T5 through L1 by posterior approach | Method | True | Fusion - action | Inferred relationship | Some | 2 | 
| Fusion of thoracolumbar region of spine by posterior approach | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Fusion of cervicothoracic region of spine by posterior approach | Method | False | Fusion - action | Inferred relationship | Some | 1 | 
| Fusion of lumbosacral region of spine by posterior approach | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Spinal arthrodesis | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Anterior epiphysiodesis of spine for correction of deformity | Method | True | Fusion - action | Inferred relationship | Some | 2 | 
| Arthrodesis by posterior technique of atlas-axis with bone graft | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Revisional fusion of cervical spine | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Fusion of joint of cervical spine with internal fixation by anterior approach | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Chemical open pleurodesis | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Fusion of lumbosacral region of spine by anterior approach | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Lumbosacral spinal fusion for pseudoarthrosis | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Dorsal and dorsolumbar fusion by anterior technique | Method | False | Fusion - action | Inferred relationship | Some | 1 | 
| Fusion of sacroiliac joint with internal fixation by posterior approach | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Fusion of joint of lumbar spine by anterior approach | Method | True | Fusion - action | Inferred relationship | Some | 1 | 
| Arthrodesis by anterior transoral technique, clivus-C1-C2, with bone graft and excision of odontoid process | Method | False | Fusion - action | Inferred relationship | Some | 3 | 
| Lumbar and lumbosacral fusion by lateral transverse process technique | Method | False | Fusion - action | Inferred relationship | Some | 2 |