BioMed Research International / 2018 / Article / Fig 2

Research Article

Three-Dimensional Morphological Characteristics of Lower Lumbar Intervertebral Foramen with Age

Figure 2

Parameters measured in the study. (a) The zone of closed intervertebral foramen (the red line, blue line and purple line located at the entrance, middle slice, and exit of intervertebral foramen), SP-IFE was the distance between spinous process and intervertebral foramen entrance slice; (b) the entrance slice of intervertebral foramen; (d) the exit slice of intervertebral foramen; (c) the middle sagittal slice between the entrance and exit of intervertebral foramen; The following parameters were taken at entrance slice. DH: disc height between adjacent vertebra; P-SAP: distance between pedicle and superior articular process; IPV-SAP: distance between posteroinferior margin of vertebrae and superior articular process; P-IV: distance between pedicle and inferior vertebral body; BBA: Bony boundary area of intervertebral foramina.

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