| Inbound Relationships | Type | Active | Source | Characteristic | Refinability | Group | 
| Spondylolisthesis, grade 3 | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Congenital spondylolisthesis | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 2 | 
| Congenital spondylolisthesis | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Spondylolisthesis, grade 4 | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 2 | 
| Spondylolisthesis, grade 4 | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Degenerative spondylolisthesis | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Degenerative spondylolisthesis | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 2 | 
| Spondylolisthesis, grade 1 | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Spondylolisthesis, grade 1 | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 2 | 
| Spondylolisthesis, grade 2 | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Spondylolisthesis, grade 2 | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 2 | 
| Spondylolisthesis, grade 3 | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Spondylolisthesis, grade 3 | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 2 | 
| Congenital spondylolisthesis | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Congenital spondylolisthesis | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 2 | 
| Spondylolisthesis, grade 4 | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 2 | 
| Spondylolisthesis, grade 4 | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Degenerative spondylolisthesis | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Degenerative spondylolisthesis | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 2 | 
| Spondylolisthesis, grade 1 | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Spondylolisthesis, grade 1 | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 2 | 
| Spondylolisthesis, grade 2 | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Spondylolisthesis, grade 2 | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 2 | 
| Spinal facet joint denervation | Procedure site - Direct | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Radiofrequency denervation of spinal facet joint of cervical vertebra | Procedure site - Direct | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 2 | 
| Radiofrequency denervation of spinal facet joint of thoracic vertebra | Procedure site - Direct | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 2 | 
| Local anesthetic facet joint nerve block | Procedure site - Direct | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Local anesthetic cervical facet joint nerve block | Procedure site - Direct | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 2 | 
| Local anesthetic thoracic facet joint nerve block | Procedure site - Direct | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Local anesthetic lumbar facet joint nerve block | Procedure site - Direct | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 3 | 
| Injection of facet joint | Procedure site - Indirect | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Injection around facet mass | Procedure site - Indirect | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Injection of local anesthetic and steroid into facet joint | Procedure site - Indirect | True | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 2 | 
| Injection of local anesthetic and steroid into facet joint | Procedure site - Indirect | True | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Injection of steroid into facet joint | Procedure site - Indirect | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Cryodenervation of spinal facet joint of vertebra | Procedure site - Direct | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Cryodenervation of spinal facet joint of cervical vertebra | Procedure site - Direct | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Cryodenervation of spinal facet joint of thoracic vertebra | Procedure site - Direct | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Cryodenervation of spinal facet joint of lumbar vertebra | Procedure site - Direct | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Percutaneous spinal facet joint denervation | Procedure site - Direct | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Facet joint arthrogram | Procedure site - Direct | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Facetectomy of vertebra | Procedure site - Direct | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 2 | 
| Open reduction of fracture of spine and excision of facet of spine | Procedure site - Direct | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 3 | 
| Injection around apophyseal facet of vertebra | Procedure site - Indirect | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Denervation of spinal facet joint of cervical vertebra NEC | Procedure site - Direct | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Denervation of spinal facet joint of thoracic vertebra NEC | Procedure site - Direct | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Denervation of spinal facet joint of lumbar vertebra NEC | Procedure site - Direct | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Radiofrequency controlled thermal denervation of spinal facet joint of vertebra NEC | Procedure site - Direct | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Other specified denervation of spinal facet joint of vertebra | Procedure site - Direct | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Denervation of spinal facet joint of vertebra NOS | Procedure site - Direct | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Fluoroscopic arthrography of facet joint | Procedure site - Direct | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Spondylolisthesis, grade 3 | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Spondylolisthesis, grade 3 | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 2 | 
| Congenital spondylolisthesis | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 2 | 
| Congenital spondylolisthesis | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Spondylolisthesis, grade 4 | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Spondylolisthesis, grade 4 | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 2 | 
| Degenerative spondylolisthesis | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Degenerative spondylolisthesis | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Spondylolisthesis, grade 1 | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Spondylolisthesis, grade 1 | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 2 | 
| Spondylolisthesis, grade 2 | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 2 | 
| Spondylolisthesis, grade 2 | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Structure of facet joint of cervical spine | Is a | True | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier |  | 
| Local anesthetic thoracic facet joint nerve block | Procedure site - Indirect | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 2 | 
| Local anesthetic lumbar facet joint nerve block | Procedure site - Indirect | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 2 | 
| Local anesthetic facet joint nerve block | Procedure site - Indirect | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Local anesthetic cervical facet joint nerve block | Procedure site - Indirect | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 2 | 
| Structure of facet joint of lumbar spine | Is a | True | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier |  | 
| Structure of facet joint of thoracic spine | Is a | True | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier |  | 
| Arthropathy of spinal facet joint | Finding site | True | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Osteoarthritis of spinal facet joint | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Lumbar facet joint effusion | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Cervical facet joint effusion | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Thoracic facet joint effusion | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Injection of facet joint | Procedure site - Indirect | True | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Pedicular spondylolisthesis | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Facet joint arthrogram | Procedure site - Direct | True | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Injection of steroid into facet joint | Procedure site - Indirect | True | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Degenerative arthropathy of spinal facet joint | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Spondylolisthesis | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Isthmic spondylolisthesis | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Acquired spondylolisthesis | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Fluoroscopic arthrography of facet joint | Procedure site - Direct | True | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Dislocation of lumbar facet joint | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Dislocation of thoracic facet joint | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Congenital spondylolisthesis | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Injection around apophyseal facet of vertebra | Procedure site - Indirect | True | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Biopsy of facet joint of spine | Procedure site - Direct | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Dysplastic spondylolisthesis | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Spondyloptosis | Finding site | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Injection around facet mass | Procedure site - Indirect | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Injection of facet joint using fluoroscopic guidance | Procedure site - Direct | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 2 | 
| Injection of facet joint using fluoroscopic guidance | Procedure site - Indirect | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Magnetic resonance imaging arthrography of facet joint | Procedure site - Direct | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Fluoroscopic arthrography of zygapophyseal joint with contrast | Procedure site - Direct | False | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Magnetic resonance imaging arthrography of facet joint | Procedure site - Direct | True | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Fluoroscopic arthrography of zygapophyseal joint with contrast | Procedure site - Direct | True | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Injection of facet joint using fluoroscopic guidance | Procedure site - Indirect | True | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 | 
| Injection of facet joint using fluoroscopic guidance | Procedure site - Direct | True | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 2 | 
| Injection of local anesthetic into facet joint | Procedure site - Indirect | True | Zygapophyseal joint structure | Inferred relationship | Existential restriction modifier | 1 |