What score on the motor function strength scale indicates normal strength?

A score of 5 on the motor function strength scale indicates normal strength. This scale, often used in clinical settings to evaluate the strength of voluntary muscle movement, ranges from 0 to 5. A score of 5 signifies that the individual can move the tested muscle against gravity and also against maximal resistance. This represents optimal muscle function and strength.

In contrast, lower scores reflect varying degrees of weakness. A score of 4 indicates strength against some resistance, but not maximal. A score of 3 shows movement against gravity but not against added resistance, while a score of 2 allows for movement only when gravity is minimized. A score of 1 implies a flicker of movement, and 0 indicates no movement at all. Understanding this scale is crucial for assessing and documenting muscle function in both clinical practice and research.