What does a 2/5 grade indicate on MMT?

What does a 2/5 grade indicate on MMT?

• A. Movement is possible only with gravity eliminated.
• B. Active movement through the full ROM against gravity.
• C. Movement with external resistance.
• D. No contraction.

Answer: (A)

The important idea is how the muscle performs when gravity is not opposing the movement. A 2/5 grade means the person can actively move the joint, but only when gravity is eliminated—that is, with the limb supported so gravity doesn’t help or hinder the motion. This shows there is some muscle contraction and control, but not enough strength to produce movement against gravity in the usual testing position. So you can observe the movement in a gravity-free or gravity-eliminated setup, but you cannot perform the movement against gravity in the standard anti-gravity position. This places the strength below the ability to move through the full ROM against gravity (which would be higher) and above no contraction or only a trace of contraction.

The important idea is how the muscle performs when gravity is not opposing the movement. A 2/5 grade means the person can actively move the joint, but only when gravity is eliminated—that is, with the limb supported so gravity doesn’t help or hinder the motion. This shows there is some muscle contraction and control, but not enough strength to produce movement against gravity in the usual testing position. So you can observe the movement in a gravity-free or gravity-eliminated setup, but you cannot perform the movement against gravity in the standard anti-gravity position. This places the strength below the ability to move through the full ROM against gravity (which would be higher) and above no contraction or only a trace of contraction.