PRC Neuromuscular Integration & Movement Patterns 3

Question 1

The Posterior Exterior Chain (PEC) in PRI refers to the integration of which primary structures?

Accepted Answer

Hamstrings, gluteus maximus, thoracolumbar fascia, and posterior shoulder complex

Answer

Thoracolumbar fascia, paraspinals, and posterior cervical muscles

Answer

Gastroc-soleus, posterior tibialis, and plantar fascia

Answer

Quadratus lumborum, iliolumbar ligament, and iliacus

Question 2

During a PRI-based step test, a patient shows an inability to shift weight left. This is most commonly associated with:

Accepted Answer

Inability to achieve left acetabular-femoral orientation due to right AIC patterning

Answer

Bilateral hip abductor weakness

Answer

Left hip joint pathology only

Answer

Right ankle instability limiting weight transfer

Question 3

Which of the following describes the neuromuscular role of the left adductor magnus in PRI theory?

Accepted Answer

It acts as a hip extensor-internal rotator that counters right pelvic forward rotation

Answer

It primarily externally rotates the left femur during stance phase

Answer

It provides direct attachment to the pelvic floor for continence control

Answer

It functions as a secondary hip abductor during single-leg stance

Question 4

A PRI clinician observes that a patient's left rib cage is more elevated and externally rotated than the right. This finding is most consistent with:

Accepted Answer

Right TMCC pattern influencing the left thorax

Answer

Left thoracic outlet syndrome

Answer

Left-sided PEC dominance with posterior mediastinum inhibition

Answer

Isolated left serratus anterior weakness

Question 5

In PRI gait analysis, the left gluteus medius ideally fires during which phase to stabilize the pelvis?

Accepted Answer

Right loading response through mid-stance, when the right foot is on the ground

Answer

Left toe-off into left swing phase

Answer

Right terminal swing to decelerate the right limb

Answer

Bilateral stance phase only

Question 6

Femoroacetabular orientation in PRI is considered most optimal when the femoral head is positioned:

Accepted Answer

Concentrically within the acetabulum with the pelvis in a neutral position

Answer

Anteriorly in the acetabulum with the pelvis in anterior tilt

Answer

Posteriorly in the acetabulum to maximize hip extension leverage

Answer

Superiorly in the acetabulum to increase joint compression

Question 7

When a PRI patient cannot achieve a posterior pelvic tilt during a supine test, the primary neuromuscular explanation is:

Accepted Answer

Overactive psoas and underactive abdominals preventing posterior rotation

Answer

Shortened hip flexors preventing pelvic movement

Answer

Weak gluteus maximus making hip extension impossible

Answer

Tight hamstrings blocking sacral counternutation