Original Editor - The Open Physio project.

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A goniometer is an instrument which measures the available range of motion at a joint. If a patient or client is suffering from decreased range of motion in a particular joint, the therapist can use a goniometer to assess what the range of motion is at the initial assessment, and then make sure the intervention is working by using the goniometer in subsequent sessions.

The term goniometry is derived from two Greek words, gonia, meaning "angle" and metron, meaning "measurement".

Validity and reliability

There is some question as to whether or not the use of a goniometer is a sufficiently valid and reliable instrument to determine whether an intervention has been effective (Citation or reference needed).

Recent Related Research (from Pubmed)

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Goniometer. (2008, August 30). In Wikipedia, The Free Encyclopedia. Retrieved 11:12, September 14, 2008, from http://en.wikipedia.org/wiki/Goniometer.