Exam 9: Lumbar Spine, Sacrum, and Coccyx

A fracture through the vertebral body and posterior elements caused by lap seat belts during an auto accident involving sudden deceleration is a ____ fracture.

Conventional radiography does not detect bone loss from conditions such as osteoporosis until bone mass has been reduced at least 30%.

A patient comes to radiology for a follow-up study of the lumbar spine.The patient had a spinal fusion performed at the L3-4 level 4 months earlier.Which of the following would best demonstrate the degree of movement at the fusion site?

Which of the following topographic landmarks corresponds with the L4-5 vertebral level?

A patient comes in with a possible compression fracture of L3.Which one of the following positioning routines would best demonstrate the body of L3 and the intervertebral joint spaces above and below it?

What CR angulation should be used for an AP axial projection of the L5-S1 joint space on a male patient?

Lateral projections of the sacrum and coccyx must be performed as two separate exposures.

What type of joint movement occurs with the zygapophyseal joints?

Where is the CR centered for an AP axial projection of the sacrum?

Which of the following should be done to reduce scatter radiation from reaching the image receptor for the lateral lumbar, sacrum, and coccyx projections?

The intervertebral foramina of the lumbar spine are located at an angle of _____ in relation to the midsagittal plane.

A geriatric patient comes to radiology for a lumbar spine series.She has severe kyphosis of the thoracolumbar spine.Which one of the following modifications should be applied to this patient?

An anterior wedging of vertebrae with a loss of body height but rarely causing neurologic symptoms is called:

A radiograph of the left sacroiliac joint demonstrates it open and clearly seen.Which of the following positions was performed?

The long axis of the sacrum is generally angled more posteriorly in males than females.