A joint allowing motion in a single plane only is described as:
AUnilateral
BUniversal
CUnstable
DUniaxial
Answer & Solution
Correct answer: D. Uniaxial
1. Movement happens around one axis.
2. That single axis names the class.
3. So it is uniaxial.
_Source: OpenStax Anatomy and Physiology 2e, Chapter 9, Joints._
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