Rotational and translational components Flashcards

1
Q

What occurs with forces that run along the bone?

A
  • Acts at the same point as the original force.
  • Pulls the bone towards or away from the joint.
  • No turning effect.
  • Zero moment arm.
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2
Q

What occurs when a force is right-angled to a joint?

A
  • Acts at the same point as the original force.
  • Pure turning effect. (torque)
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3
Q

What occurs if a force runs along the segment through the axis of rotation?

A
  • Zero rotational component.
  • Purely translational.
  • Either compress the joint by pushing the segment into the axis of rotation.
  • Or pill the bone away from the axis by tensing the joint and pulling on its ligaments.
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4
Q

What occurs if a force is perpendicular to a segment?

A
  • Zero translational effect.
  • Purely rotational.
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