MMT Grading Systems 2

Question 1

In the Medical Research Council (MRC) scale, what grade is assigned when a muscle contracts but produces no visible or palpable movement?

Accepted Answer

Grade 1

Answer

Grade 1 (Trace) on the MRC scale indicates a visible or palpable contraction without joint movement.

Question 2

Which MMT grade describes full range of motion against gravity with full resistance?

Accepted Answer

Grade 5

Answer

Grade 5 (Normal) represents full ROM against gravity with full resistance that cannot be overcome.

Question 3

When using the Kendall grading system, what percentage corresponds to a 'Good' muscle grade?

Accepted Answer

80%

Answer

In Kendall's percentage-based system, a 'Good' grade corresponds to 80% of normal muscle strength.

Question 4

A patient can move through full ROM in a gravity-eliminated position only. What MRC grade does this represent?

Accepted Answer

Grade 2

Answer

Grade 2 (Poor) indicates the ability to complete full ROM only when gravity is eliminated.

Question 5

The '+' and '−' modifiers in MMT grading primarily serve to:

Accepted Answer

Indicate partial range of motion or resistance differences

Answer

Plus and minus modifiers refine grades by indicating completion of more or less than half the ROM or resistance level.

(MMT) Manual Muscle Testing Practice Test