| Outbound Relationships | Type | Target | Active | Characteristic | Refinability | Group | Values | 
| Ball operation, undercutting of perianal tissue | Is a | Operation on anus | false | Inferred relationship | Existential restriction modifier |  |  | 
| Ball operation, undercutting of perianal tissue | Method | Surgical action | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Ball operation, undercutting of perianal tissue | Procedure site | Anal structure | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Ball operation, undercutting of perianal tissue | Procedure site | Anal structure | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Ball operation, undercutting of perianal tissue | Method | Surgical action | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Ball operation, undercutting of perianal tissue | Is a | Division of peripheral nerve | false | Inferred relationship | Existential restriction modifier |  |  | 
| Ball operation, undercutting of perianal tissue | Is a | Trunk incision | false | Inferred relationship | Existential restriction modifier |  |  | 
| Ball operation, undercutting of perianal tissue | Method | Division - action | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Ball operation, undercutting of perianal tissue | Procedure site - Direct | Structure of branch of sacral plexus | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Ball operation, undercutting of perianal tissue | Method | Division - action | false | Inferred relationship | Existential restriction modifier | 1 |  | 
| Ball operation, undercutting of perianal tissue | Procedure site - Direct | Structure of branch of sacral plexus | false | Inferred relationship | Existential restriction modifier | 1 |  |