Biomechanics Blog 2 - Testing Position

When measuring for ROM on a client, you will use a goniometer to measure the start and end position of the joint that is being measured. Bony landmarks are important while doing this because they are the standard used to place the goniometer. The axis, stationary arm, and moveable arm of the goniometer have to be placed on the proper locations so the measurement is accurate and could be consistently performed and measured by someone else.

In MMT, there is a test position because you want to start the movement that is being tested where the muscle can perform at its highest. This is normally in mid position where the most cross bridges are formed. When performing MMT, you first try to perform the movement against gravity with the client. If the client cannot perform the movement against gravity, they can be placed in another body position where they can perform the movement with gravity eliminated by doing the movement parallel to the floor. This is beneficial because it takes away the force of gravity on the movement and makes it possible for the client to perform. It might also be the only way a movement can be measured to avoid pain and follow contraindications.