In muscle function testing, what does grade 5 indicate?

In muscle function testing, what does grade 5 indicate?

• A. Normal active movement, full ROM against gravity and resistance
• B. Active movement with full ROM against gravity
• C. Active movement with full ROM against gravity and some resistance
• D. No movement despite maximal effort

Answer: (B)

Grade 5 indicates normal muscle strength. The muscle can move the joint through the full range of motion against gravity and withstand the examiner’s maximal resistance. This level shows smooth, unrestricted movement with the ability to resist opposing force. It is the highest grade on the standard manual muscle testing scale and distinguishes normal strength from grades that involve less resistance or no movement at all.

Grade 5 indicates normal muscle strength. The muscle can move the joint through the full range of motion against gravity and withstand the examiner’s maximal resistance. This level shows smooth, unrestricted movement with the ability to resist opposing force. It is the highest grade on the standard manual muscle testing scale and distinguishes normal strength from grades that involve less resistance or no movement at all.