MMT Trunk Assessment 2

Question 1

During trunk flexion MMT, the patient is unable to lift the head but can flex the upper cervical spine. Which grade is assigned?

Accepted Answer

Grade 1

Answer

Grade 1 indicates visible or palpable muscle contraction without movement, such as neck flexor activity without trunk lifting.

Question 2

Which muscle is the primary trunk extensor tested during prone MMT of the lower back?

Accepted Answer

Erector spinae

Answer

The erector spinae group is the primary trunk extensor and is tested in the prone position during MMT.

Question 3

A patient can complete full trunk lateral flexion against gravity but yields to minimal resistance. What MMT grade applies?

Accepted Answer

Grade 4

Answer

Grade 4 means the muscle completes full range against gravity and tolerates some but not full resistance.

Question 4

When testing trunk rotation, the examiner asks the patient to rotate the upper trunk while in the supine position. Which muscles are the prime movers?

Accepted Answer

Internal and external obliques

Answer

Trunk rotation is primarily produced by the internal oblique on the ipsilateral side and the external oblique on the contralateral side.

Question 5

For Grade 3 trunk extension, what is the minimum positional requirement in a standard MMT?

Accepted Answer

Patient lifts trunk off table in prone with hands behind back

Answer

Grade 3 trunk extension requires the patient to lift the upper trunk off the table in prone with hands behind the back, completing range against gravity.

(MMT) Manual Muscle Testing Practice Test

(MMT) Manual Muscle Testing Practice Test

MMT Trunk Assessment 2