CBP Mirror Image Adjusting Techniques 2 — Questions and Answers
Question 1: During a Mirror Image lumbar adjustment for a right rotational deformity, the corrective rotational force should be applied toward the:
- Left rotation, opposite to the right deformity (Correct answer)
- Right rotation, in the same direction as the deformity
- Anterior direction to extend the lumbar spine
- Inferior direction to decompress lumbar discs
Correct answer: Left rotation, opposite to the right deformity
Mirror Image protocol requires applying the corrective force in the left rotational direction to counteract the existing right rotational spinal deformity.
Question 2: Harrison's Mirror Image concept in CBP is grounded in which mechanical principle?
- Viscoelastic creep — sustained loads in the corrective direction produce plastic deformation of spinal soft tissues (Correct answer)
- Wolff's Law — bone remodels in response to compressive forces only
- Davis's Law — ligaments shorten in response to chronic stretch
- Pascal's Law — pressure applied to a fluid is transmitted equally in all directions
Correct answer: Viscoelastic creep — sustained loads in the corrective direction produce plastic deformation of spinal soft tissues
CBP mirror image traction and exercises exploit viscoelastic creep, applying sustained corrective loads so that spinal ligaments and discs undergo plastic (permanent) deformation toward normal alignment.
Question 3: In CBP practice, mirror image postures (held positions) are typically maintained for a minimum of how long per session to initiate viscoelastic tissue remodeling?
- 10 to 20 minutes (Correct answer)
- 30 seconds to 1 minute
- 1 to 2 minutes
- 45 to 60 minutes
Correct answer: 10 to 20 minutes
CBP traction and mirror image postures are typically held for 10–20 minutes per session to reach the creep phase of viscoelastic tissue deformation and initiate structural change.
Question 4: Which radiographic measurement confirms successful progress in a CBP cervical mirror image traction program?
- Increase in the cervical Cobb angle toward the Harrison normal of approximately 34° (Correct answer)
- Decrease in the atlas plane line angle
- Increase in the C2–C7 anterior vertebral body height
- Reduction in disc space narrowing at C5–C6
Correct answer: Increase in the cervical Cobb angle toward the Harrison normal of approximately 34°
In CBP, improvement in cervical lordosis is quantified by the Cobb angle increasing toward Harrison's established normal of approximately 34°, confirming successful structural correction.
Question 5: For a patient with an anterior head translation (forward head posture), the Mirror Image traction setup would position the head in:
- Posterior translation relative to the trunk to oppose the anterior displacement (Correct answer)
- Anterior translation to gently reinforce the existing posture
- Lateral flexion to the right to decompress the left facets
- Axial rotation to the left to open the right intervertebral foramen
Correct answer: Posterior translation relative to the trunk to oppose the anterior displacement
Anterior head translation is corrected by setting the traction device to apply a posterior translatory force on the head, the direct mirror image of the forward displacement.
Question 6: Which table design feature is most essential for performing full-spine CBP Mirror Image adjusting?
- Segmented drop pieces and articulating sections that can be configured to pre-load the spine into mirror image positions (Correct answer)
- A fixed flat surface that provides rigid support throughout the procedure
- Traction cables attached to the pelvis for lumbar decompression
- An inversion feature that places the patient at 30 degrees head-down
Correct answer: Segmented drop pieces and articulating sections that can be configured to pre-load the spine into mirror image positions
CBP adjusting tables have segmented, articulating sections so each spinal region can be independently pre-loaded into the mirror image corrective position before the thrust.
Question 7: In the CBP Mirror Image system, what is the term for the idealized spinal alignment that serves as the reference standard for identifying deformities?
- Harrison Spinal Model (HSM) or Harrison Normal (Correct answer)
- Gonstead Full Spine Listing System
- Diversified Neutral Spine Protocol
- Logan Basic Full Spine Normal
Correct answer: Harrison Spinal Model (HSM) or Harrison Normal
The Harrison Spinal Model (HSM) provides the mathematical, geometry-based normal alignment standard against which patient X-rays are compared to identify the exact deformity requiring mirror image correction.
CBP Mirror Image Adjusting Techniques 2
During a Mirror Image lumbar adjustment for a right rotational deformity, the corrective rotational force should be applied toward the: