l07 | a | vertebral body |
| d | rt. pedicle, en face |
| i | interfacetal joint |
| o | rt. superior articular process |
| r | rt. inferior articular mass & facet |
| arrow | absent pars = spondylolysis |
| o1 | rt. superior articular process & facet, subjacent vertebra |
| d1 | rt. pedicle, suprajacent vertebra |
| p1 | rt. subjacent intact pars |