Manual Muscle Testing (MMT) Competency Assessment — Questions and Answers

Question 1: Which position is used when performing gravity-eliminated testing of the trunk rotators?

Supine with hips and knees flexed
Side-lying with hips at 90° (Correct answer)
Prone with a pillow under the abdomen
Seated upright

Correct answer: Side-lying with hips at 90°

Side-lying with hips at 90° flexion places the trunk in a horizontal plane so rotation occurs without fighting gravity.

Question 2: In MMT documentation, what information should always accompany the numeric grade?

Examiner's hand dominance
Patient's pain medication list
Muscle tested, position, and any substitutions or limiting factors (Correct answer)
Time of day the test was performed

Correct answer: Muscle tested, position, and any substitutions or limiting factors

Complete MMT documentation includes the specific muscle, test position, grade, and any substitutions, pain, or other factors that may have influenced the result.

Question 3: The biceps brachii, tested during elbow flexion MMT, is primarily innervated by which nerve?

Ulnar nerve
Median nerve
Musculocutaneous nerve (Correct answer)
Radial nerve

Correct answer: Musculocutaneous nerve

The musculocutaneous nerve (C5-C6) innervates the biceps brachii, which performs elbow flexion and forearm supination.

Question 4: How should you manage time during a timed test?

Divide total time by questions and pace yourself, spending less on easy ones (Correct answer)
Rush through the entire test
Only work on hard questions
Spend equal time on every question

Correct answer: Divide total time by questions and pace yourself, spending less on easy ones

Calculate time per question, spend less on easy questions to bank time for harder ones, and check your pace periodically.

Question 5: What is the most effective study technique according to research?

Listening to music while studying
Highlighting text
Re-reading notes multiple times
Active recall with spaced repetition (Correct answer)

Correct answer: Active recall with spaced repetition

Active recall (testing yourself) combined with spaced repetition (reviewing at intervals) is the most effective study method per cognitive science research.

Question 6: Which of the following is the most appropriate primary location to document MMT findings in an electronic health record (EHR)?

Billing encounter form under procedure codes
Free-text progress note only, embedded in narrative paragraphs
Administrative section under patient demographics
Structured data fields or flowsheet rows designated for musculoskeletal assessments (Correct answer)

Correct answer: Structured data fields or flowsheet rows designated for musculoskeletal assessments

EHR structured fields and flowsheets allow for trending, filtering, and inter-rater comparison, making them the optimal location for serial MMT data.

Question 7: In MMT, which muscle's grade most directly reflects C7 nerve root function?

Biceps brachii
Pronator teres
Deltoid
Triceps brachii (Correct answer)

Correct answer: Triceps brachii

The triceps brachii is primarily innervated at C7 via the radial nerve, making elbow extension the key MMT test for C7 nerve root integrity.

Question 8: Why is continuing education important in Grading Systems?

To stay current with evolving standards and practices (Correct answer)
To network only
It is not important after certification
Only for re-certification requirements

Correct answer: To stay current with evolving standards and practices

Continuing education keeps professionals updated with the latest developments, standards, and best practices in their field.

Question 9: During MMT of the hip extensors, the patient is prone. If the patient has a painful lumbar spine, the best alternative position is:

Supine with the hip in 90° flexion
Seated with trunk forward flexion
Side-lying with the tested leg uppermost (Correct answer)
Standing with resistance applied manually

Correct answer: Side-lying with the tested leg uppermost

Side-lying with the tested leg on top allows hip extension testing in a gravity-eliminated or partially gravity-resisted plane while avoiding lumbar stress from the prone position.

Question 10: What distinguishes a Grade 4 from a Grade 5 MMT score in clinical practice?

Grade 5 is only tested in standing while grade 4 is supine
Grade 5 tolerates maximum resistance while grade 4 breaks with strong resistance (Correct answer)
Grade 5 requires pain-free movement while grade 4 does not
Grade 5 uses a dynamometer while grade 4 does not

Correct answer: Grade 5 tolerates maximum resistance while grade 4 breaks with strong resistance

Grade 5 (Normal) withstands maximum examiner resistance, whereas Grade 4 (Good) yields before maximum force is reached.

Question 11: A patient with obesity makes standard supine trunk flexion MMT positioning problematic. The best adaptation is:

Apply double resistance to account for body weight
Use prone positioning as an equivalent substitute
Test in sitting and document the position modification (Correct answer)
Skip trunk flexion testing entirely

Correct answer: Test in sitting and document the position modification

Testing in sitting with documentation of the positional modification allows valid assessment when standard positioning is not feasible.

Question 12: When a patient demonstrates pain-limited effort during MMT, the most appropriate clinical interpretation is:

The grade represents pain-limited strength, not true maximal strength, and should be documented as such (Correct answer)
The grade should be rounded up one level to compensate for pain inhibition
Pain inhibition enhances true muscle strength, so the grade is accurate
The test is invalid and should not be recorded

Correct answer: The grade represents pain-limited strength, not true maximal strength, and should be documented as such

Pain-limited tests reflect submaximal effort and the grade must be qualified in documentation to avoid misinterpretation.

Question 13: Which nerve innervates the gluteus medius, the primary muscle tested during hip abduction MMT?

Sciatic nerve
Obturator nerve
Superior gluteal nerve (Correct answer)
Inferior gluteal nerve

Correct answer: Superior gluteal nerve

The superior gluteal nerve (L4-S1) innervates the gluteus medius and minimus, which are the primary hip abductors tested in MMT.

Question 14: Which spinal nerve root level is the primary target when MMT assesses knee extension strength?

L5
L4 (Correct answer)
L2
L3

Correct answer: L4

Knee extension via the quadriceps is innervated by the femoral nerve with L4 as the dominant root level clinically tested in MMT.

Question 15: The rhomboid muscles, tested by scapular retraction in MMT, are innervated by which nerve?

Long thoracic nerve
Thoracodorsal nerve
Suprascapular nerve
Dorsal scapular nerve (Correct answer)

Correct answer: Dorsal scapular nerve

The rhomboids are innervated by the dorsal scapular nerve (C4-C5) and tested via scapular retraction/adduction in MMT.

Question 16: What is the recommended patient position when testing a hip flexor muscle at grade 3 or above?

Prone
Side-lying
Supine with leg extended
Seated at edge of table (Correct answer)

Correct answer: Seated at edge of table

Hip flexion against gravity is typically tested in the seated position so the patient lifts the thigh upward against gravitational resistance.

Question 17: During elbow flexor MMT, the forearm is supinated to preferentially recruit which muscle?

Pronator teres
Brachialis
Brachioradialis
Biceps brachii (Correct answer)

Correct answer: Biceps brachii

The biceps brachii is a powerful supinator and elbow flexor; supinating the forearm maximizes its mechanical advantage during MMT.

Question 18: The primary reason MMT grades above 3 require the examiner to apply resistance is to:

Assess pain response
Differentiate between normal and slightly reduced strength (Correct answer)
Standardize patient positioning
Evaluate endurance

Correct answer: Differentiate between normal and slightly reduced strength

Resistance allows the examiner to distinguish Grade 4 (some resistance) from Grade 5 (full resistance) strengths.

Question 19: During ankle plantar flexion MMT, why is a single-limb heel raise preferred over manual resistance in supine?

It provides a functional body-weight load that standard manual resistance cannot replicate (Correct answer)
It isolates the peroneus longus more accurately
It eliminates the need for grading
It is less painful for the patient

Correct answer: It provides a functional body-weight load that standard manual resistance cannot replicate

The gastrocnemius and soleus must lift body weight during a heel raise, making it a more valid functional test than therapist-applied resistance in supine.

Question 20: Which MMT grade best describes a muscle that moves a limb through partial ROM with gravity eliminated?

Grade 3
Grade 1
Grade 2- (Correct answer)
Grade 2+

Correct answer: Grade 2-

Grade 2- indicates the muscle can move the segment through less than full ROM in the gravity-eliminated position.

Question 21: When performing MMT of the peroneals (fibularis longus/brevis) in the gravity-eliminated position, the patient is:

Seated with the foot hanging
Prone with the knee flexed
Side-lying on the tested side with the foot free (Correct answer)
Supine with the foot resting flat

Correct answer: Side-lying on the tested side with the foot free

Side-lying on the tested side positions the foot so eversion occurs horizontally without gravitational resistance.

Question 22: During cervical extension MMT against gravity, the patient is placed in:

Prone with the forehead off the table edge (Correct answer)
Supine
Seated
Side-lying

Correct answer: Prone with the forehead off the table edge

Prone with the forehead unsupported at the table edge allows the neck extensors to lift the head against gravity.

Question 23: Which muscle is assessed by asking the patient to pinch their index finger and thumb together while the examiner attempts to pull them apart?

Adductor pollicis (Correct answer)
First dorsal interosseous
Opponens pollicis
Flexor digitorum superficialis

Correct answer: Adductor pollicis

Adductor pollicis is primarily responsible for thumb adduction tested by key pinch (Froment's sign variation).

Question 24: A patient in side-lying moves their lower extremity through full ROM in the gravity-eliminated plane. What grade is recorded?

Grade 4
Grade 1
Grade 2 (Correct answer)
Grade 3

Correct answer: Grade 2

Grade 2 (Poor) is assigned when the patient completes full ROM only in a gravity-eliminated position.

Question 25: When documenting MMT grades, which notation correctly represents a muscle that performs full ROM against gravity but is overcome by minimal resistance?

4/5
3/5
4−/5 (Correct answer)
3+/5

Correct answer: 4−/5

Grade 4−/5 indicates full antigravity ROM but failure against minimal applied resistance, just below the Grade 4 threshold.

Question 26: When documenting MMT, a grade of '3+' means the muscle:

Completes full ROM gravity-eliminated with trace activity
Completes partial ROM against gravity
Completes full ROM against gravity and holds against minimal resistance (Correct answer)
Tolerates moderate resistance through full ROM

Correct answer: Completes full ROM against gravity and holds against minimal resistance

A plus modifier on Grade 3 indicates the muscle completes full against-gravity ROM and can tolerate some minimal resistance before giving way.

Question 27: When testing a patient with severe osteoporosis, which modification is most appropriate during MMT?

Use a shorter lever arm by placing resistance closer to the joint (Correct answer)
Apply force proximal to the joint to reduce lever arm
Avoid all resistance and use gravity-eliminated positions only
Increase test repetitions to compensate for reduced force application

Correct answer: Use a shorter lever arm by placing resistance closer to the joint

Placing resistance closer to the joint shortens the lever arm, reducing torque and minimizing fracture risk in osteoporotic bones.

Question 28: Forearm pronation weakness during MMT most directly implicates which nerve?

Radial nerve
Ulnar nerve
Musculocutaneous nerve
Median nerve (Correct answer)

Correct answer: Median nerve

Forearm pronation (pronator teres and pronator quadratus) is innervated by the median nerve (C6-C7), so pronation weakness implicates this nerve.

Question 29: The gluteus maximus, the primary muscle for hip extension MMT, is innervated by which nerve?

Inferior gluteal nerve (Correct answer)
Sciatic nerve
Pudendal nerve
Superior gluteal nerve

Correct answer: Inferior gluteal nerve

The gluteus maximus is innervated by the inferior gluteal nerve (L5-S2), making it the nerve tested during hip extension MMT.

Question 30: For a Grade 2+ score, what must the patient demonstrate?

Partial ROM against gravity (Correct answer)
Full ROM in gravity-eliminated position with some resistance
Full ROM against gravity
Visible contraction only

Correct answer: Partial ROM against gravity

Grade 2+ indicates the patient completes full gravity-eliminated ROM and moves partially (less than half) against gravity.

Question 31: During gravity-eliminated testing of the hip adductors, the non-tested limb is placed in:

Extension flat on the table
Abduction supported by the examiner or a sling (Correct answer)
Crossed over the tested limb
Flexion with knee bent

Correct answer: Abduction supported by the examiner or a sling

The non-tested limb is held in abduction to allow the tested limb to adduct freely in a gravity-eliminated horizontal plane.

Manual Muscle Testing (MMT) Competency Assessment

Manual Muscle Testing (MMT) assesses muscle strength and function using a standardized 0–5 grading scale, and is a core clinical competency for physical therapists, occupational therapists, and rehabilitation professionals evaluating neuromuscular conditions.

Questions

35 min

Time Limit

70%

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