Biomechanics blog post #2


Using bony landmarks and proper positioning is necessary when measuring ROM so that you are able to put joints at zero for a starting position. By identifying a bony landmark you are able to stabilize the proximal joint. To have a good testing position it is important to have the right amount of tension on the structure. The test position for MMT is the position in which the muscle is placed for optimal muscle contraction.  If a client can comfortably withstand pressure in the test position for 3-4 seconds than they have normal muscle strength. The gravity eliminated position is implemented when the client is unable to hold test position and breaks after a few seconds. If they are graded a 2 (poor) or less, MMT will be performed so that the structure being tested is parallel to the ground as to eliminate gravity. To avoid unnecessary compensation, it is important to provide stabilization to joint that is not being tested.

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