PRC Postural Assessment & Biomechanical Analysis 4

Question 1

Which of the following best describes the biomechanical role of the left serratus anterior in PRI postural assessment?

Accepted Answer

It assists in achieving left thoracic A/P expansion and left rib cage apposition

Answer

The left serratus anterior assists in achieving left thoracic anterior-posterior expansion and proper left rib cage apposition to the diaphragm, supporting the left ZOA.

Question 2

During assessment, a patient demonstrates inability to maintain a posterior pelvic tilt while in the supine 90/90 position. What does this finding indicate in PRI terms?

Accepted Answer

Inability to achieve sacral counter-nutation and posterior innominate rotation

Answer

Inability to hold a posterior pelvic tilt in supine 90/90 indicates the patient cannot achieve sacral counter-nutation and posterior innominate rotation needed for neutral pelvis.

Question 3

In the PRI Myokinematic Restoration program, what is the clinical significance of the 'right hip extension test' being positive?

Accepted Answer

The right hip cannot achieve extension without right lumbar extension compensation

Answer

A positive right hip extension test indicates the patient compensates with right lumbar extension because the right hip cannot achieve true hip extension independently.

Question 4

What does the term 'PEC' (Posterior Exterior Chain) refer to in a PRI postural assessment context?

Accepted Answer

A chain of muscles from the left glute/piriformis through the ipsilateral erector spinae to the contralateral latissimus

Answer

The Left PEC is a spiral/diagonal chain running from the left glute/piriformis through the left erector spinae to the right latissimus, creating ipsilateral posterior pelvic rotation and contralateral thoracic influences.

Question 5

A PRI postural screen reveals a patient's left patella tracks laterally and the left foot is supinated at rest. What does this pattern most likely reflect at the pelvis and hip?

Accepted Answer

Left hip in AF ER (external rotation) and left innominate posterior rotation

Answer

Lateral patellar tracking and foot supination on the left suggest left hip AF ER and left innominate posterior rotation, as external rotation of the femur drives these distal compensations.

(PRC) Postural Restoration Certified Practice Test

(PRC) Postural Restoration Certified Practice Test

PRC Postural Assessment & Biomechanical Analysis 4