Strength Grading (MMT) Digital Tool

MMT Master Authority Tool

Compare MRC, Daniels & Worthingham, and Kendall Grading Systems

1. Choose Authority

MRC Scale

Standard 0-5 integers.

(Purple Code)

Daniels & Worthingham

"The Make Test"

(Green Code)

Florence Kendall

"The Break Test"

(Orange Code)

System Selected

Patient Ability (Observation): No Contraction (Silent) Trace / Flicker only Partial ROM (Gravity Eliminated) Full ROM (Gravity Eliminated) Partial ROM (Against Gravity) Full ROM (Against Gravity)

Resistance Applied: None / Cannot hold Slight Resistance Moderate Resistance Maximum / Strong Resistance

--

--

MRC (Medical Research Council)

Created in 1943 for peripheral nerve injuries. Does NOT officially use +/- grades.

Daniels & Worthingham

Focuses on motion through range ("Make Test"). Uses percentages of range to determine 3- vs 2+.

Florence Kendall

Focuses on end-range strength ("Break Test"). Very strict on Grade 3 definition.

📚 Scientific References

• MRC: Medical Research Council. Aids to the Investigation of Peripheral Nerve Injuries. London: HMSO, 1943.
• D&W: Hislop, H.J., & Montgomery, J. (2007). Muscle Testing: Techniques of Manual Examination. Elsevier.
• Kendall: Kendall, F.P., et al. (2005). Muscles: Testing and Function, with Posture and Pain. Lippincott Williams & Wilkins.