Question

multiple choice question

how would one classify a joint that allows motion in two planes?

monaxial
biaxial
multiaxial

Explanation:

Define joint classification by axes of motion

Using the Joint Classification and Range of Motion Factors knowledge points

Joints are classified functionally based on their degrees of freedom, which correspond to the number of planes through which they can move:

• Monaxial (or uniaxial): Movement in only one plane or around a single axis.
• Biaxial: Movement in two perpendicular planes or around two axes.
• Multiaxial (or triaxial): Movement in three planes or around three axes.

Match the question criteria to the correct term

The question asks for the classification of a joint that allows motion in two planes.

Based on anatomical terminology:

• "Bi-" is the prefix meaning two.
• Therefore, a joint allowing movement in two planes is classified as biaxial.

Answer:

• Monaxial
• Biaxial (Correct answer)
• Multiaxial