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Questions and Answers
What does the neutral zero method refer to?
What does the neutral zero method refer to?
- A method to measure range of motion starting from 0 degrees to 180 degrees (correct)
- A process to calculate the quality of joint motion compared to an un-injured limb
- A method to evaluate passive range of motion in joints
- A technique to assess active assisted range of motion
Which is considered the starting position for measuring range of motion?
Which is considered the starting position for measuring range of motion?
- 180 degrees flexion
- Halfway between medial and lateral rotation
- Anatomical position with some exceptions (correct)
- Full radial deviation
When evaluating active range of motion, what does it specifically measure?
When evaluating active range of motion, what does it specifically measure?
- Passive joint movement without assistance
- The arc of motion attained by external force
- Joint movement in all planes
- The arc of motion during voluntary muscular contraction (correct)
Why should substitute/trick movements be avoided when assessing range of motion?
Why should substitute/trick movements be avoided when assessing range of motion?
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What does it mean when a movement is measured from 0 degrees in rotation?
What does it mean when a movement is measured from 0 degrees in rotation?
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In what situations would active assisted range of motion be most beneficial?
In what situations would active assisted range of motion be most beneficial?
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Study Notes
Range of Motion (ROM)
- The arc of motion that occurs at a joint or a series of joints.
Measuring Range of Motion
- The starting position for measuring ROM is the anatomical position (except for rotation in the transverse plane).
- The neutral zero method uses a 0-180-degree rotation system, where joints are at 0 degrees for flexion-extension and abduction-adduction when the body is in anatomical position.
- For rotation, 0 degrees is halfway between medial and lateral rotation.
Types of Range of Motion
- Active ROM: The arc of motion attained by a subject during unassisted voluntary motion with active muscular contraction.
- Active Assisted ROM: The arc of motion with a combination of active muscular contraction and external force, used when muscles are weak and joint movement causes discomfort.
- Passive ROM: The arc of motion attained without assistance from the subject by an external force.
Evaluating Range of Motion
- Active ROM should be evaluated to determine the quality and quantity of joint motion comparable to the uninjured limb.
- Active ROM should be assessed in all planes of motion.
- Substitute/trick movements should be avoided to assess the quality of the movement.
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