Which of the following statements is true concerning "joint play" of a joint?
a. Joint play is not considered a "normal" motion at the joint.
b. They must be tested by application of an external force.
c. They can be performed voluntarily by a subject.
d. They occur only in the close-packed position of the joint.
ANS: B
Joint play is the movement of one articular surface on another that is not under voluntary control.
The joint must be in a loose pack position in order to allow movement when an external force is
applied.
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