The Correct Answer is: B
The typical vertebra has a body and a neural/vertebral arch surrounding the vertebral foramen (Figure 2-58). The neural arch is composed of two pedicles and two laminae that support four articular processes, two transverse processes, and one spinous process. The pedicles are short, thick processes extending back from the posterior aspect of the vertebral body, each one sustaining a lamina. The laminae extend
posteriorly to the midline and join to form the spinous process. Each pedicle has notches superiorly and inferiorly (superior and inferior vertebral notches) that—with adjacent vertebrae—form the intervertebral foramina, through which the spinal nerves pass. The neural arch also has lateral transverse processes for muscle attachment and superior and inferior articular processes for the formation of apophyseal joints (classified as diarthrotic). The vertebral column permits flexion, extension,
and lateral and rotary motions through its various articulations. (Frank, Long, and Smith, 11th ed., vol. 1, p. 376)
Which position below will best demonstrate the articular facets on the left side of the cervical spine?
Spine Question's.
The correct answer is (C). A lateral projection of the lumbar spine is illustrated. The intervertebral articulations (disk spaces) are well demonstrated. Because the intervertebral foramina, which are formed by the pedicles, are 90 degrees to the MSP, they are also well demonstrated in the lateral projection.
Which of the following positions would best demonstrate the left apophyseal articulations of the lumbar vertebrae? the apophyseal joints closer to the IR. The left apophyseal joints are demonstrated in the LPO position, while the right apophyseal joints are demonstrated in the RPO position.
Cervical, Thoracic and Lumbar Spine Joints and Foramina Positioning.