MMT Lower Extremity Testing 5

Question 1

When bilaterally comparing MMT results for hip abductors, a finding of 4/5 on one side compared to 5/5 on the other is best interpreted as:

Accepted Answer

Mild unilateral weakness that may contribute to a Trendelenburg gait

Answer

A unilateral grade 4 hip abductor finding suggests mild weakness that can cause ipsilateral Trendelenburg sign during single-limb stance.

Question 2

Which patient position is used to test the popliteus muscle's contribution to knee internal rotation?

Accepted Answer

Prone with knee flexed to 90°

Answer

The popliteus is tested prone with the knee at 90° flexion, resisting tibial internal rotation (medial rotation of the lower leg).

Question 3

During MMT of the adductor group, which muscle is best isolated by positioning the hip in slight flexion rather than neutral?

Accepted Answer

Pectineus

Answer

The pectineus is most active as an adductor when the hip is slightly flexed because its fiber orientation favors adduction with simultaneous flexion.

Question 4

What is the clinical significance of clonus detected at the ankle during a lower extremity MMT session?

Accepted Answer

Indicates upper motor neuron pathology and is a contraindication to standard MMT resistance

Answer

Ankle clonus is a sign of upper motor neuron (UMN) pathology; standard MMT resistance grading is not valid in UMN conditions because spasticity confounds voluntary strength assessment.

Question 5

A runner presents with inability to perform a single-limb heel rise and weakness on plantar flexion MMT. The most likely involved nerve is:

Accepted Answer

Tibial nerve

Answer

The tibial nerve innervates the gastrocnemius and soleus; tibial nerve compromise results in plantar flexion weakness and inability to perform heel rises.

(MMT) Manual Muscle Testing Practice Test

(MMT) Manual Muscle Testing Practice Test

MMT Lower Extremity Testing 5