Using proper testing procedures when performing Range of motion (ROM) and Manual muscle testing (MMT), improves the accuracy of the data obtained. The use of body landmarks is very important when retesting a client. Bony landmarks gives the therapist a proper place to align the goniometer to ensure they are measuring the correct way. Incorrect use of landmarks can skew data. This makes it hard to record more data after treatment because the original (Baseline) data was incorrect. Real progress can be hard to see. If another therapist retests your client, they may not obtain correct measurements if the original numbers were obtained incorrectly. Simply taking the time to align the goniometer to the proper landmarks can significantly proper interrater and intrarater reliability and retesting data in the future.
The test position for MMT is the place the muscle can produce optimal muscle contractions. The therapist puts resistance on the distal end of the tested muscle. The therapist stabilizes the proximal segment. The optimal position is mid way through the range of motion. The muscle has to be able to contract at its maximal strength to resists the resistance of the therapist. The examiner needs to have proper body mechanics while testing their client. They should stand on the side being tested.
Gravity eliminated testing is done when the client cannot actively move through their available range of motion. The tested segment is put in a plane where there is no gravity, parallel to the ground. This removes the resistance component of MMT. The client can now complete the movement in the modified position.
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