Resisted Range Of Motion (RROM) And Manual Muscle Testing (MMT) Practice Exam

When documenting a muscle with strength 4+ on MMT, which description best matches this grade?

Record as 3+/5 Record as 4/5 Record as 4+/5 (good strength with full ROM against gravity and moderate resistance) Record as 5/5

Correct Answer:

Record as 4+/5 (good strength with full ROM against gravity and moderate resistance)

Explanation:

In manual muscle testing, documentation reflects two things: whether the limb moves through the full range of motion against gravity, and how much resistance the examiner can apply. The plus sign shows a strength level just above the base grade but not full normal strength. A grade of 4+ means the person can move through the full range against gravity and can tolerate a moderate amount of manual resistance, but they do not reach normal strength. That’s why the best description to document is 4+/5 with full ROM against gravity and moderate resistance.

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