Test Positioning

 

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So far in our Biomechanics class we have learned about range of motion (ROM) and manual muscle testing (MMT). When we are testing ROM we are looking to see how much movement is available at the joint, and we take measurements using goniometers. The two important factors of testing ROM are proper positioning and using bony landmarks. It is important to use proper positioning because it allows you to start measuring at zero degrees and it helps stabilize the joint. For bony landmarks, it helps us make sure we are placing the goniometer in the correct position to get the most accurate results. The bony landmarks also serve as our starting point for measurements. 

Manual muscle testing (MMT) is where we measure how much strength and functionality is in our muscles. For MMT, it is important to have clients in a certain position. We place the clients in a mid range position so that way the client can generate the greatest amount of force possible. During MMT, is important as a clinician to be watching the motion to see if there is any compensatory movements. Compensatory movements are when the client is using other parts of their body to help them complete a movement. 

There are two positions we use for MMT, they are gravity eliminated and against gravity. When the client is in the against gravity position, the client is performing movement against gravity. If the client is unable to perform a full range of motion against gravity, we will switch to the gravity eliminated position. In this position, we make sure the joint is moving parallel to the ground. Gravity eliminated position helps clients who have weaker muscles.