PRC Case Analysis & Practical Application 3

Question 1

A patient cannot maintain a Zone of Apposition (ZOA) during exhalation. Which compensatory breathing pattern is most likely present?

Accepted Answer

Accessory muscle breathing with scalene and SCM dominance

Answer

Loss of ZOA leads to over-reliance on accessory muscles like scalenes and SCM to elevate the rib cage during inhalation as a compensatory strategy.

Question 2

In PRI, the term 'alternating reciprocal' refers to which concept?

Accepted Answer

The alternating activation of left and right sides during gait and breathing

Answer

Alternating reciprocal activity refers to the normal left-right alternating pattern of muscle activation that PRI seeks to restore through repositioning.

Question 3

A patient presents with forward head posture, elevated right shoulder, and left lumbar scoliosis. Which combination of PRI patterns best explains this presentation?

Accepted Answer

Right BC + Left AIC

Answer

Right BC causes right thoracic elevation and left thoracic convexity, while Left AIC produces left lumbar scoliosis and right pelvic forward rotation — together creating this clinical picture.

Question 4

Which finding would lead you to prioritize treating the Right BC pattern before addressing the Left AIC in a patient with both patterns?

Accepted Answer

The patient's chief complaint is neck and shoulder pain rather than hip or low back pain

Answer

Treatment priority is guided by the patient's chief complaint and functional limitations; if BC-related symptoms dominate, the BC pattern is addressed first.

Question 5

A post-surgical knee patient demonstrates difficulty achieving full knee extension. PRI evaluation reveals an ipsilateral posterior innominate. How does this pelvic finding contribute to the knee problem?

Accepted Answer

Posterior innominate increases hamstring length-tension advantage, reducing quadriceps recruitment needed for extension

Answer

A posterior innominate positions the hamstrings with an advantage, inhibiting quadriceps activation through reciprocal inhibition and reducing drive for terminal knee extension.

(PRC) Postural Restoration Certified Practice Test

(PRC) Postural Restoration Certified Practice Test

PRC Case Analysis & Practical Application 3