Manual Muscle Testing (MMT) grade.

Definition
Muscle testing is an attempt to determine a patient's ability to voluntarily contract a specific muscle. (Keep in mind that this does not provide information on the patient's ability to use the muscle in daily activities, or if the muscle interacts with other muscle around it in a synergistic pattern). 

Purpose
Muscle testing is indicated in any patient with suspected or actual impaired muscle performance, including strength, power, or endurance. Identification of specific impaired muscles or muscle groups provides information for proper treatment. 


Grading

5	Normal	subject completes ROM against gravity with maximal resistance
4+	Good Plus	completes ROM against gravity with moderate-maximal resistance
4	Good	completes ROM against gravity with moderate resistance
4-	Good Minus	completes ROM against gravity with minimal-moderate resistance
3+	Fair Plus	completes ROM against gravity with only minimal resistance
3	Fair	completes ROM against gravity without manual resistance
3-	Fair Minus	does not complete the range of motion against gravity, but does complete more than half of the range
2+	Poor Plus	is able to initiate movement against gravity
2	Poor	completes range of motion with gravity eliminated
2-	Poor Minus	does not complete ROM in a gravity eliminated position
1	Trace	muscle contraction can be palpated, but there is no joint movement
0	Zero	patient demonstrates no palpable muscle contraction