- Structure of a Goniometer:
- Arms: It typically consists of two arms – a stationary (or “fixed”) arm and a movable (or “moving”) arm.
- Fulcrum: A pivot point or a small circular piece in the middle, where the two arms are attached.
- Scale: Surrounding the fulcrum, there’s a scale marked in degrees, which allows the user to measure the angle between the two arms.
- Usage:
- The stationary arm is aligned with a stable body part adjacent to the joint being measured.
- The movable arm is then aligned with the moving part of the limb.
- As the joint moves, the movable arm moves with it.
- The angle of the joint can be read from the scale where the movable arm points.
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