Question

The 3D horseshoe shape is narrow anteriorly and wider posteriorly. What type of tomographic movement would achieve this shape?

a) Linear Movement
b) Circular Movement
c) Angular Movement
d) Random Movement

Answer 1

To achieve a 3D horseshoe shape through tomographic movement, circular movement is used. Linear, angular, or random movements would not reliably produce the specific varying widths of a horseshoe shape. The related motion occurring at a condyloid joint is rotation.

Step-by-step explanation:

To achieve a 3D horseshoe shape that is narrow anteriorly and wider posteriorly through tomographic movement, one would use circular movement. This is because circular motion allows an object to follow a curved path, varying the orientation and angle as it goes, which can create the varying widths of the horseshoe shape. Conversely, linear movement would result in uniform shapes, angular movement would create pivot around a fixed angle, and random movement could not reliably create a specific shape like a horseshoe.

The type of motion achieved by moving a body region in a circular movement at a condyloid joint is known as rotation. This is similar to the motion needed in tomography to achieve the varying widths of the horseshoe shape.