CBP CBP Spinal Physics and Mechanics 3

Question 1

According to CBP research, by how much does the effective weight of the head increase for every inch of anterior head translation?

Accepted Answer

10 lbs per inch

Answer

CBP and related biomechanical studies indicate that every inch of forward head posture adds approximately 10 lbs of effective load on the cervical spine due to the increased moment arm.

Question 2

Which term describes the coupling motion pattern observed in the lumbar spine during lateral flexion?

Accepted Answer

Ipsilateral axial rotation with lateral flexion

Answer

In the lumbar spine, lateral flexion is coupled with ipsilateral axial rotation (spinous processes rotate toward the convexity), a pattern important in CBP movement analysis.

Question 3

In CBP, what is the purpose of calculating the 'posterior body line' on a lateral cervical radiograph?

Accepted Answer

To establish the ideal lordosis arc and quantify deviation of each vertebra from that arc

Answer

The posterior body line connects the posterior vertebral body corners to create a reference arc, allowing precise quantification of each segment's deviation from the ideal lordotic curve.

Question 4

What is the clinical significance of a 'double crush phenomenon' in CBP spinal mechanics?

Accepted Answer

Simultaneous compression of a nerve at two separate anatomical locations reducing its tolerance to injury

Answer

The double crush phenomenon describes how nerve compression at one site (e.g., the spine) sensitizes the nerve, making a distal compression (e.g., carpal tunnel) more symptomatic than either alone.

Question 5

Which type of spinal loading is most protective against disc degeneration according to CBP biophysical principles?

Accepted Answer

Cyclic, well-distributed axial loading within a neutral spine posture

Answer

CBP emphasizes that cyclic axial loading within a neutral, well-aligned spine promotes disc imbibition and nutrient exchange, which is protective against degeneration.

CBP - Certified Biophysics Chiropractic Practice Test

CBP - Certified Biophysics Chiropractic Practice Test

CBP CBP Spinal Physics and Mechanics 3