Biomechanical Evaluation Flashcards
7 cards from real CBP practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Biomechanical Evaluation flashcards as text
In the Harrison ideal spinal model, the approximate absolute rotation angle of cervical lordosis from C2 to C7 is:
Answer: About 42 degrees
The Harrison cervical model gives an ideal C2-C7 lordosis of about 42 degrees.
The Harrison ideal lumbar lordosis measured from L1 to L5 with posterior tangents is approximately:
Answer: About 40 degrees
The ideal L1-L5 absolute rotation angle in the Harrison lumbar model is about 40 degrees.
On an ideal AP (frontal) full-spine view, what should the spine look like?
Answer: A straight vertical alignment with no lateral deviation
The ideal coronal spine is vertical and straight, with no lateral translation or lateral flexion.
In the sagittal plane, the ideal cervical lordosis in the Harrison model fits the shape of which geometric figure?
Answer: A circular arc
Harrison's ideal cervical lordosis is modeled as a circular arc from C2 to C7.
The ideal thoracic kyphosis (T1-T12) in CBP biomechanical models is closest to:
Answer: About 45 degrees
The normal thoracic kyphosis is about 44-45 degrees in the Harrison model.
Which radiographic line connects the posterior inferior and posterior superior corners of each vertebral body to check for translation?
Answer: George's line
George's line traces the posterior vertebral body margins and shows segmental translation when it is broken.
Compared with the Cobb method, why does CBP prefer posterior tangents for sagittal curve measurement?
Answer: They describe the curve along the vertebral bodies and are less affected by endplate shape
Posterior tangents follow the posterior body margins, which reduces errors from irregular endplates and gives repeatable segmental angles.