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

Question 1: During a shoulder flexion MMT, the examiner applies resistance at the distal forearm. The correct direction of the resistance force is:

Into flexion, to resist the motion's direction
Into extension, opposing the movement direction (Correct answer)
Superiorly, to assist the movement
Medially, across the segment

Correct answer: Into extension, opposing the movement direction

Resistance is always applied in the direction opposite to the tested motion; for flexion, the force is applied into extension to challenge the flexor muscles.

Question 2: A therapist is performing MMT on a patient with polymyositis. Which pattern of weakness would be most characteristic?

Weakness primarily in the facial muscles
Asymmetric upper extremity weakness only
Distal extremity weakness greater than proximal
Symmetric proximal extremity weakness (Correct answer)

Correct answer: Symmetric proximal extremity weakness

Polymyositis is an inflammatory myopathy that produces symmetric proximal muscle weakness, making hip and shoulder girdle muscles the primary targets.

Question 3: What is the process of elimination in multiple-choice testing?

Ruling out obviously incorrect answers to improve odds (Correct answer)
Eliminating questions you don't know
Skipping every other question
Removing your first answer

Correct answer: Ruling out obviously incorrect answers to improve odds

Process of elimination involves identifying and removing clearly wrong answers, increasing the probability of selecting the correct answer from remaining options.

Question 4: What role does ethics play in Grading Systems practice?

Ethics is optional in professional settings
It only applies to managers
It guides professional conduct and protects stakeholders (Correct answer)
It only matters for legal compliance

Correct answer: It guides professional conduct and protects stakeholders

Professional ethics provide frameworks for responsible decision-making, ensuring practitioners act in the best interest of those they serve.

Question 5: When testing the lumbricals of the hand, the examiner stabilizes the metacarpophalangeal joint in extension and asks the patient to flex the:

Proximal interphalangeal joints while keeping the DIPs extended (Correct answer)
Metacarpophalangeal joints into flexion
All finger joints simultaneously
Distal interphalangeal joints only

Correct answer: Proximal interphalangeal joints while keeping the DIPs extended

The lumbricals flex the MCPs and extend the IPs; testing involves stabilizing the MCP and asking for IP extension while the MCPs are held.

Question 6: How should you manage time during a timed test?

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

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 7: The thenar muscles tested during thumb opposition MMT are primarily innervated by which nerve?

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

Correct answer: Median nerve

The thenar muscles (abductor pollicis brevis, opponens pollicis) are innervated by the recurrent branch of the median nerve (C8-T1); carpal tunnel syndrome often weakens these muscles.

Question 8: The quadratus lumborum contributes to which trunk movement assessed in MMT?

Trunk flexion
Trunk lateral flexion (Correct answer)
Trunk extension
Trunk rotation

Correct answer: Trunk lateral flexion

The quadratus lumborum laterally flexes the trunk and is a key stabilizer assessed during trunk lateral flexion MMT.

Question 9: In MMT, which muscle's grade most directly reflects C7 nerve root function?

Biceps brachii
Triceps brachii (Correct answer)
Deltoid
Pronator teres

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 10: When is it most appropriate to document MMT results using a gravity-eliminated position?

When the therapist suspects pain inhibition
When the patient is uncooperative with testing
When the muscle is graded 0, 1, or 2 (Correct answer)
When bilateral comparison is needed

Correct answer: When the muscle is graded 0, 1, or 2

Gravity-eliminated positions are used for grades 0–2 because these muscles cannot complete movement against gravity.

Question 11: The rhomboid muscles, tested by scapular retraction in MMT, are innervated by which nerve?

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

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 12: What is the recommended hand placement for applying resistance during MMT?

Proximal to the joint on the fixed segment
Distal to the joint on the moving segment (Correct answer)
At the midpoint of the limb segment
Over the joint being tested

Correct answer: Distal to the joint on the moving segment

Resistance is applied distal to the tested joint on the moving segment to create a lever arm that challenges the target muscle.

Question 13: A patient with carpal tunnel syndrome undergoes MMT. Which specific muscle is most critical to test to determine severity of median nerve compression?

Abductor pollicis brevis (Correct answer)
Flexor digitorum superficialis
Lumbricals of the index and middle fingers
Flexor carpi radialis

Correct answer: Abductor pollicis brevis

Abductor pollicis brevis is the most sensitive indicator of median nerve motor function in the hand; its weakness indicates significant thenar atrophy from carpal tunnel syndrome.

Question 14: In the Medical Research Council (MRC) scale, what grade is assigned when a muscle contracts but produces no visible or palpable movement?

Grade 1 (Correct answer)
Grade 3
Grade 0
Grade 2

Correct answer: Grade 1

Grade 1 (Trace) on the MRC scale indicates a visible or palpable contraction without joint movement.

Question 15: The serratus anterior, tested by scapular protraction in MMT, is innervated by which nerve?

Suprascapular nerve
Long thoracic nerve (Correct answer)
Thoracodorsal nerve
Medial pectoral nerve

Correct answer: Long thoracic nerve

The long thoracic nerve (C5-C7) innervates the serratus anterior; injury causes medial scapular winging observed during MMT.

Question 16: In pediatric MMT, which modification is most commonly required compared to adult testing?

Testing only in gravity-eliminated positions
Skipping stabilization
Adjusting instructions and using play-based cooperation strategies (Correct answer)
Using heavier resistance

Correct answer: Adjusting instructions and using play-based cooperation strategies

Children may not follow standard verbal instructions reliably, so examiners use age-appropriate language and play-based tasks to elicit cooperative effort.

Question 17: When testing a patient with a total hip replacement (posterior approach), which hip muscle group is most critical to assess cautiously due to precaution violations?

Hip extensors in standing
Hip abductors in side-lying
Hip flexors in supine
Hip internal rotators in seated (Correct answer)

Correct answer: Hip internal rotators in seated

Posterior approach THA precautions restrict hip internal rotation; actively testing or loading the internal rotators risks posterior dislocation.

Question 18: When documenting trunk MMT for a patient with chronic low back pain, Grade 4- for extension means:

Strong contraction with pain but no movement limitation
Full range gravity-eliminated with slight resistance
Partial range against gravity with no resistance
Full range against gravity, resists only a minimal force before yielding (Correct answer)

Correct answer: Full range against gravity, resists only a minimal force before yielding

Grade 4- indicates movement through full range against gravity but the muscle yields to only minimal applied resistance.

Question 19: During cervical spine assessment, weak shoulder shrug on MMT combined with weak head rotation to the opposite side suggests involvement of which structure?

Phrenic nerve
C5-C6 nerve roots
C3-C4 nerve roots
Spinal accessory nerve (CN XI) (Correct answer)

Correct answer: Spinal accessory nerve (CN XI)

The spinal accessory nerve innervates both the trapezius (shoulder shrug) and sternocleidomastoid (head rotation to opposite side).

Question 20: What is the window level and window width on CT images?

Settings that control the brightness and contrast of displayed images (Correct answer)
Scan speed controls
Patient positioning parameters
Physical measurements of the CT scanner

Correct answer: Settings that control the brightness and contrast of displayed images

Window level sets the center brightness (what HU appears as middle gray) and window width controls contrast range (how many HUs span from black to white).

Question 21: A Grade 3− finding indicates the muscle:

Completes full range against gravity with minimal resistance
Fails to move against gravity at all
Moves through less than half the range against gravity (Correct answer)
Moves through more than half the range against gravity

Correct answer: Moves through less than half the range against gravity

Grade 3− means the muscle moves through less than half of the ROM against gravity without added resistance.

Question 22: What is the first step in performing Manual Muscle Testing?

Test multiple muscles simultaneously
Apply resistance immediately
Begin with a maximum resistance test
Position the patient properly (Correct answer)

Correct answer: Position the patient properly

The first and most crucial step in performing Manual Muscle Testing (MMT) is to correctly position the patient. Proper positioning is essential to isolate the specific muscle or muscle group being tested and to eliminate the effects of gravity or compensatory movements from other muscles. This foundational step ensures the accuracy and reliability of the subsequent strength assessment.

Question 23: The term 'break test' in trunk MMT refers to:

Testing the muscle at its shortest length only
Stopping the test when pain is reported
Applying force until the patient's position breaks down to determine the maximum grade (Correct answer)
Performing repeated contractions to fatigue

Correct answer: Applying force until the patient's position breaks down to determine the maximum grade

The break test involves the examiner applying force to the patient's held position until movement yields, identifying the resistance threshold.

Question 24: When grading is done in a gravity-eliminated position for shoulder abduction, which plane is typically used?

Diagonal plane
Horizontal (transverse) plane (Correct answer)
Sagittal plane
Frontal plane

Correct answer: Horizontal (transverse) plane

Gravity-eliminated testing for shoulder abduction is performed with the patient side-lying so movement occurs horizontally.

Question 25: Forearm pronation weakness during MMT most directly implicates which nerve?

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

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 26: Which nerve root is primarily responsible for shoulder external rotation, tested via the infraspinatus in MMT?

C4
C7
C5 (Correct answer)
C6

Correct answer: C5

Shoulder external rotation (infraspinatus and teres minor) is primarily innervated at C5 via the suprascapular and axillary nerves respectively.

Question 27: Which of the following best describes the standard test position for MMT of the upper trunk flexors (Grade 3 level)?

Prone, patient lifts head and chest off the table
Sitting, patient leans forward 90°
Standing, patient flexes forward against a fixed bar
Supine, patient raises trunk until scapulae clear the table with arms across chest (Correct answer)

Correct answer: Supine, patient raises trunk until scapulae clear the table with arms across chest

Grade 3 upper trunk flexion requires the patient to curl up until both scapulae clear the table surface, completing range against gravity.

Question 28: Which spinal nerve root level is the primary target when MMT assesses knee extension strength?

L3
L5
L4 (Correct answer)
L2

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 29: Which nerve root level is primarily tested when assessing shoulder abduction strength during MMT?

C3-C4
C7-C8
C5-C6 (Correct answer)
C6-C7

Correct answer: C5-C6

Shoulder abduction via the deltoid is innervated at C5-C6 via the axillary nerve, making this the key root level tested during MMT.

Question 30: For testing the gastrocnemius at grade 3, single-leg heel raise is performed with the patient in which position?

Standing with support (Correct answer)
Prone with knee extended
Seated with knee extended
Supine with foot over edge of table

Correct answer: Standing with support

Standing with support allows a single-leg heel raise against body weight, which is the standard grade 3 test for gastrocnemius.

Question 31: How does MMT contribute to rehabilitation programs?

It provides insight into nutritional deficiencies.
It predicts surgical outcomes.
It monitors muscle strength improvements over time. (Correct answer)
It reduces the need for physical therapy sessions.

Correct answer: It monitors muscle strength improvements over time.

Manual Muscle Testing (MMT) is an essential component of rehabilitation programs because it provides objective data on a patient's muscle strength at various stages of recovery. By regularly performing MMT, therapists can track improvements in muscle function, adjust treatment plans accordingly, and demonstrate the effectiveness of interventions. This monitoring helps ensure that rehabilitation goals are being met and progress is being made.

Question 32: When assessing strength in a patient with upper motor neuron lesion, MMT is considered:

A limited measure due to spasticity, synergy patterns, and poor isolation (Correct answer)
Equally valid as in lower motor neuron lesions
Invalid and should never be used
The gold standard for measuring volitional strength

Correct answer: A limited measure due to spasticity, synergy patterns, and poor isolation

UMN lesions produce spasticity, obligatory synergies, and loss of selective motor control, all of which confound the isolated-muscle assumptions of standard MMT.

Question 33: When grading finger flexors, which grade indicates the patient can flex the fingers through full ROM against gravity but not against any added resistance?

Grade 2
Grade 3 (Correct answer)
Grade 5
Grade 4

Correct answer: Grade 3

Grade 3 (Fair) signifies full range of motion against gravity with no additional resistance.

Question 34: What are standard precautions in healthcare?

Only wearing gloves for known infections
Using masks during surgery only
Treating all blood and body fluids as potentially infectious (Correct answer)
Hand washing after patient contact only

Correct answer: Treating all blood and body fluids as potentially infectious

Standard precautions assume all blood and body fluids are potentially infectious, requiring consistent use of barriers (gloves, gowns, masks) and hand hygiene for all patient interactions.

Question 35: Ankle plantarflexion weakness during MMT most directly implicates which nerve root level?

L4
S3
L5
S1 (Correct answer)

Correct answer: S1

Ankle plantarflexion (gastrocnemius/soleus) is primarily innervated at S1-S2, making S1 the key root level implicated by plantarflexion weakness.

Question 36: Which condition most significantly invalidates standard MMT grades due to velocity-dependent resistance?

Joint contracture
Spasticity (Correct answer)
Muscle atrophy
Peripheral neuropathy

Correct answer: Spasticity

Spasticity produces velocity-dependent resistance that artificially inflates perceived muscle strength, making standard MMT grades unreliable.

Question 37: Which technique is used to assess a grade 2 muscle when full gravity-eliminated ROM cannot be achieved?

Using a handheld dynamometer reading below 10 N
Gravity-eliminated position with partial ROM noted as grade 2- (Correct answer)
Applying minimal resistance in the anti-gravity position
Testing the contralateral limb for comparison

Correct answer: Gravity-eliminated position with partial ROM noted as grade 2-

A grade 2- is recorded when the muscle moves through partial ROM only in a gravity-eliminated position.

Question 38: The biceps brachii, tested during elbow flexion MMT, is primarily innervated by which nerve?

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

Correct answer: Musculocutaneous nerve

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

Question 39: The iliopsoas, primary muscle tested in hip flexion MMT, receives innervation from which source?

Obturator nerve only (L2-L3)
Femoral nerve only (L2-L4)
Superior gluteal nerve (L4-S1)
Direct lumbar plexus branches and femoral nerve (L1-L3) (Correct answer)

Correct answer: Direct lumbar plexus branches and femoral nerve (L1-L3)

The iliopsoas receives composite innervation from direct lumbar plexus branches (L1-L3) to the psoas and femoral nerve branches to the iliacus.

Question 40: In a patient with hemiplegia following stroke, why is MMT considered an incomplete measure of upper extremity function?

MMT cannot test muscles proximal to the elbow
MMT is only validated for peripheral nerve injuries
MMT grades isolated strength but does not capture synergy patterns, spasticity, or motor control quality (Correct answer)
MMT requires patient cooperation, which is rarely possible post-stroke

Correct answer: MMT grades isolated strength but does not capture synergy patterns, spasticity, or motor control quality

Post-stroke motor impairment involves abnormal synergy patterns and spasticity that MMT's isolated muscle testing cannot fully capture, necessitating additional functional assessments.

Question 41: Which of the following is a contraindication to applying strong resistance during MMT?

Patient age over 60
Contralateral limb weakness
Recent fracture or surgical repair in the tested limb (Correct answer)
Mild muscle soreness from exercise

Correct answer: Recent fracture or surgical repair in the tested limb

Recent fractures or surgical repairs are absolute contraindications to strong resistance because force could disrupt healing structures.

Question 42: Why is bilateral comparison recommended as part of a complete MMT examination?

It eliminates the need for stabilization
It reduces examination time
It provides an individualized normal reference when norms are unavailable (Correct answer)
It allows the examiner to apply symmetric resistance

Correct answer: It provides an individualized normal reference when norms are unavailable

Comparing the involved limb to the uninvolved contralateral limb provides a patient-specific baseline, accounting for variations in body size and natural strength asymmetries.

Question 43: Which of the following represents a PRIMARY psychometric limitation of the standard MMT ordinal scale?

The scale requires expensive dynamometry equipment
The scale cannot detect full paralysis
The intervals between grades are not mathematically equal (Correct answer)
The scale is only valid for lower extremity muscles

Correct answer: The intervals between grades are not mathematically equal

MMT uses an ordinal scale, meaning grade intervals (e.g., 3 to 4) do not represent equal increments of actual force.

Question 44: What is the primary purpose of professional certification in Special Considerations?

To replace practical experience
To validate competency and knowledge in the field (Correct answer)
To increase salary automatically
To meet legal requirements only

Correct answer: To validate competency and knowledge in the field

Certification validates that a professional has met established standards of knowledge and competency in Special Considerations.

Question 45: During MMT, weakness of elbow extension most directly implicates which nerve at which root level?

Median nerve C6-C7
Musculocutaneous nerve C5-C6
Ulnar nerve C8-T1
Radial nerve C7-C8 (Correct answer)

Correct answer: Radial nerve C7-C8

Elbow extension (triceps brachii) is innervated by the radial nerve at C7-C8, with C7 being the key root level tested.

Question 46: Which MMT documentation finding would most directly support a Medicare justification for skilled PT services?

Patient is compliant with home exercise program
Therapist notes good rapport with the patient
Patient reports feeling stronger over the past week
Shoulder abductors improved from 2/5 to 3+/5 over 4 weeks of treatment (Correct answer)

Correct answer: Shoulder abductors improved from 2/5 to 3+/5 over 4 weeks of treatment

Objective, measurable grade improvement over a defined timeframe provides the skilled-care evidence Medicare requires for continued reimbursement.

Question 47: In the Lovett scale, which term corresponds to Grade 2?

Trace
Good
Poor (Correct answer)
Fair

Correct answer: Poor

Grade 2 in the Lovett scale is termed 'Poor,' indicating full ROM with gravity eliminated.

Question 48: The 'empty can' position used in some MMT protocols tests which muscle?

Supraspinatus (Correct answer)
Subscapularis
Infraspinatus
Teres minor

Correct answer: Supraspinatus

The empty can test (arm at 90° in scapular plane, internally rotated) loads the supraspinatus and is used alongside MMT.

Question 49: Which MMT grade is considered the threshold for functional antigravity strength?

Grade 3 (Correct answer)
Grade 5
Grade 2
Grade 4

Correct answer: Grade 3

Grade 3 (Fair) is the minimum grade at which a muscle can move a body segment against gravity through full ROM, marking functional antigravity capacity.

Question 50: If a patient exhibits a Trendelenburg sign during standing trunk MMT tasks, this suggests weakness of the:

Hip abductors on the stance limb side (Correct answer)
Trunk extensors bilaterally
Trunk rotators on the stance side
Lumbar flexors on the swing side

Correct answer: Hip abductors on the stance limb side

The Trendelenburg sign indicates weak hip abductors on the weight-bearing side, causing the pelvis to drop on the contralateral side.

Question 51: How does the concept of 'gravity as resistance' affect which patient position is selected for MMT?

Gravity-eliminated positions are used only for grade 5 testing
The patient is always seated to standardize gravity's effect
The limb is positioned so gravity either resists or assists the motion being tested (Correct answer)
Gravity is irrelevant; resistance is always provided by the examiner

Correct answer: The limb is positioned so gravity either resists or assists the motion being tested

Patient positioning is chosen so that for grades 3-5, gravity resists the motion, while for grades 1-2, the limb moves in a horizontal plane to minimize gravitational effect.

Question 52: Weakness of foot eversion during MMT implicates which nerve?

Superficial peroneal nerve (Correct answer)
Tibial nerve
Sural nerve
Deep peroneal nerve

Correct answer: Superficial peroneal nerve

The peroneus longus and brevis (foot evertors) are innervated by the superficial peroneal nerve (L5-S1), so eversion weakness implicates this nerve.

Question 53: When performing MMT of the peroneals (fibularis longus/brevis) in the gravity-eliminated position, the patient is:

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

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 54: For testing the middle trapezius against gravity, the patient is positioned in:

Seated with the arm at the side
Side-lying with the arm elevated
Supine with the arm forward flexed
Prone with the arm at 90° abduction and elbow extended (Correct answer)

Correct answer: Prone with the arm at 90° abduction and elbow extended

Prone with the arm at 90° abduction allows the middle trapezius to retract the scapula against gravity.

Question 55: During gravity-eliminated testing of the hip adductors, the non-tested limb is placed in:

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

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.

Question 56: In MMT, weakness of the wrist extensors most directly implicates which peripheral nerve?

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

Correct answer: Radial nerve

The radial nerve (C6-C8) innervates the wrist extensors; complete radial nerve injury produces wrist drop.

Question 57: What is the most effective study technique according to research?

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

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 58: During MMT of trunk lateral flexion, where does the examiner apply resistance?

Over the patient's shoulder on the side being tested
At the patient's head
At the pelvis on the opposite side of the movement
Over the lateral thorax on the side opposite to the direction of movement (Correct answer)

Correct answer: Over the lateral thorax on the side opposite to the direction of movement

Resistance is applied over the lateral thorax on the side opposite to the direction of lateral flexion to oppose the motion.

Question 59: What is the correct order for donning PPE?

Gloves, gown, mask, eye protection
Gown, mask, eye protection, gloves (Correct answer)
Any order is acceptable
Mask, gloves, gown, eye protection

Correct answer: Gown, mask, eye protection, gloves

The correct donning sequence is gown first, then mask/respirator, eye protection/face shield, and gloves last. This prevents contamination during application.

Question 60: During MMT of the extensor digitorum longus, resistance is applied to the:

Dorsum of the fifth metatarsal
Plantar surface of the distal phalanges
Posterior calcaneus
Dorsum of the proximal phalanges of toes 2–5 (Correct answer)

Correct answer: Dorsum of the proximal phalanges of toes 2–5

The extensor digitorum longus extends toes 2–5 at the MTP joints; resistance is applied to the dorsal surface of the proximal phalanges in the direction of plantarflexion and toe flexion.

Question 61: In MMT documentation, what information should always accompany the numeric grade?

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

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 62: In which situation would an alternative to MMT, such as a dynamometer, be more appropriate?

When quantifiable strength measurements are required (Correct answer)
When testing large muscle groups
When evaluating muscle endurance
When time is limited

Correct answer: When quantifiable strength measurements are required

While Manual Muscle Testing (MMT) provides a useful qualitative assessment of muscle strength using a 0-5 scale, it is subjective. When precise, objective, and quantifiable strength measurements are needed—for example, to track subtle changes over time, for research purposes, or for legal documentation—a dynamometer is more appropriate. A dynamometer provides numerical data (e.g., in pounds or newtons) that is less prone to examiner subjectivity.

Question 63: A patient is supine and unable to perform a straight-leg raise. The NEXT appropriate step in MMT is to:

Test the contralateral limb only
Apply assisted movement and record Grade 1
Reassess in a gravity-eliminated sidelying position (Correct answer)
Record Grade 0 and end the test

Correct answer: Reassess in a gravity-eliminated sidelying position

If the patient fails against gravity, testing is repeated in a gravity-eliminated position to differentiate between Grades 0, 1, and 2.

Question 64: For MMT of the anterior deltoid at grade 3, the patient is positioned:

Side-lying on the non-tested side
Prone with the arm hanging off the table
Supine with the arm at the side
Seated with the elbow extended (Correct answer)

Correct answer: Seated with the elbow extended

Seated with the elbow extended allows the anterior deltoid to flex the shoulder against gravity for a grade 3 assessment.

Question 65: What is the most effective way to prevent healthcare-associated infections?

Cleaning the floor
Wearing gloves at all times
Taking antibiotics
Proper hand hygiene (Correct answer)

Correct answer: Proper hand hygiene

Hand hygiene (washing with soap and water or using alcohol-based hand rub) is the single most effective measure for preventing the spread of infections in healthcare settings.

Question 66: To test the lower trapezius against gravity, the patient is placed in:

Prone with arm at 120° abduction and elbow extended (Correct answer)
Seated with arm overhead
Supine with arm at 45° abduction
Side-lying with arm forward flexed

Correct answer: Prone with arm at 120° abduction and elbow extended

Prone with the arm at 120° abduction targets the lower trapezius as it works against gravity to retract and depress the scapula.

Question 67: Hip adduction weakness during MMT most likely indicates involvement of which nerve?

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

Correct answer: Obturator nerve

Hip adduction is performed by the adductor group innervated by the obturator nerve (L2-L4), so adduction weakness implicates this nerve.

Question 68: Which factor most significantly affects the reliability of MMT grades across different examiners?

Standardization of patient positioning and resistance application (Correct answer)
Time of day testing is performed
Muscle fiber type of the tested muscle
Patient age

Correct answer: Standardization of patient positioning and resistance application

Inter-rater reliability depends heavily on consistent positioning, stabilization, and the amount and direction of force applied by each examiner.

Question 69: What does CT stand for in medical imaging?

Central Treatment
Cardiac Testing
Computed Tomography (Correct answer)
Clinical Therapy

Correct answer: Computed Tomography

CT (Computed Tomography) uses X-ray technology and computer processing to create detailed cross-sectional images of the body.

Question 70: A patient post-stroke has spasticity in the elbow flexors. Which modification is most important when performing MMT on this patient?

Test only in the antigravity position
Grade the muscle one level higher to compensate for spasticity
Use a break test rather than active motion
Apply resistance slowly to avoid triggering the stretch reflex (Correct answer)

Correct answer: Apply resistance slowly to avoid triggering the stretch reflex

Applying resistance slowly helps avoid triggering the stretch reflex in spastic muscles, which would give a falsely lower grade.

Question 71: Which nerve innervates the gluteus medius, the primary muscle tested during hip abduction MMT?

Superior gluteal nerve (Correct answer)
Inferior gluteal nerve
Obturator nerve
Sciatic 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 72: What is one of the main limitations of Manual Muscle Testing?

It takes a long time to perform.
It cannot assess muscle strength at all.
It requires expensive equipment.
It is highly subjective and dependent on the examiner's technique. (Correct answer)

Correct answer: It is highly subjective and dependent on the examiner's technique.

One of the main limitations of Manual Muscle Testing (MMT) is its inherent subjectivity. The grading of muscle strength relies heavily on the examiner's interpretation of the patient's effort and the resistance felt, as well as the consistency of their technique. This subjectivity can lead to variability between different examiners (inter-rater reliability) and even within the same examiner (intra-rater reliability), making precise, quantifiable comparisons challenging without additional tools.

Question 73: Which nerve innervates the deltoid muscle, making it the primary nerve tested during shoulder abduction MMT?

Radial nerve
Axillary nerve (Correct answer)
Suprascapular nerve
Musculocutaneous nerve

Correct answer: Axillary nerve

The axillary nerve (C5-C6) innervates the deltoid muscle, which is the primary mover tested during shoulder abduction in MMT.

Question 74: During MMT of the quadriceps, which error would cause a falsely elevated grade?

Testing in supine instead of seated
Allowing hip flexor substitution to assist knee extension (Correct answer)
Testing the non-dominant limb first
Using a break test rather than make test

Correct answer: Allowing hip flexor substitution to assist knee extension

If hip flexor activity is not controlled during knee extension testing, it can assist the movement and make the quadriceps appear stronger than they are.

Question 75: A clinician records bilateral MMT scores for knee extension as 5/5 on the right and 3/5 on the left. This notation system indicates:

Percentage strength on each side
Total bilateral score out of 10
Grade / maximum possible grade
Right grade / Left grade using the 0–5 scale (Correct answer)

Correct answer: Right grade / Left grade using the 0–5 scale

The slash notation in bilateral MMT recording means right side score / left side score on the standard 0–5 ordinal scale.

Question 76: Why is MMT considered inadequate for monitoring neuromuscular disease progression in clinical drug trials per FDA guidance?

Its ordinal scale lacks the responsiveness and ratio-level properties needed to detect drug-effect magnitude (Correct answer)
FDA prohibits manual testing in all phase III trials
MMT has not been validated in any neuromuscular condition
FDA guidance requires only patient-reported outcomes, not clinician measures

Correct answer: Its ordinal scale lacks the responsiveness and ratio-level properties needed to detect drug-effect magnitude

FDA guidance emphasizes outcome measures with demonstrated sensitivity to change and ratio-level properties; MMT's ordinal scale does not meet these requirements.

Question 77: Which statement is true regarding pain and MMT grading?

Painful inhibition may cause grading to underestimate true strength (Correct answer)
Testing should never be performed if pain is present
Pain should be ignored during grading
Pain automatically upgrades the grade by one level

Correct answer: Painful inhibition may cause grading to underestimate true strength

Pain can inhibit voluntary muscle contraction, leading to a lower grade that reflects pain response rather than actual muscle capacity.

Question 78: When documenting MMT, a grade of '3+' means the muscle:

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

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

Pudendal nerve
Inferior gluteal nerve (Correct answer)
Superior gluteal nerve
Sciatic 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 80: Which MMT grade applies when a muscle can resist 'strong but not full' examiner resistance, corresponding to mild clinical weakness?

Grade 4+
Grade 4 (Correct answer)
Grade 3+
Grade 5-

Correct answer: Grade 4

Grade 4 (Good) indicates the muscle tolerates strong but not full resistance — clinically there is some detectable weakness.

Question 81: The multifidus muscle plays a key role in trunk MMT because it primarily contributes to:

Segmental spinal stabilization and trunk extension (Correct answer)
Hip flexion and lumbar rotation
Respiration and thoracic mobility
Trunk flexion and anterior pelvic tilt

Correct answer: Segmental spinal stabilization and trunk extension

The multifidus provides intersegmental spinal stabilization and contributes to lumbar extension, making it critical in trunk extensor MMT.

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

90 min

Time Limit

70%

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