A goniometer is a device for measuring the range of motion of a joint.

goniometer
The centre of the goniometer is placed on the jointline and the arms of the device point to hip and ankle.
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Range-of-motion is a key concept in knee rehabilitation. This paper discusses how it is measured.

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CLINICAL PUBLICATIONS

Reliability of goniometric measurements and visual estimates of knee range of motion obtained in a clinical setting. Watkins MA, Riddle DL, Lamb RL and Personius WJ. Phys Ther. 1991 Feb;71(2):90-6; discussion 96-7.


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