PRC Muscle Imbalance & Pattern Recognition Flashcards

In PRI, repositioning exercises are primarily designed to:

Answer: Restore the neuromuscular ability to achieve and sense a neutral position

PRI repositioning exercises restore the patient's neuromuscular ability to achieve and sense a neutral pelvic and thoracic position, driving neuromotor repatterning.

The left serratus anterior is emphasized in PRI treatment primarily because:

Answer: It facilitates left thoracic rotation and proper rib cage positioning against the dominant rightward pattern

The left serratus anterior facilitates left thoracic rotation and proper rib cage positioning, directly counteracting the dominant rightward thoracic rotation pattern.

A patient with a Right-on-Right sacral torsion would most likely demonstrate restricted rotation in which direction during prone extension testing?

Answer: Right rotation in prone extension

A Right-on-Right sacral torsion locks the sacrum on the right oblique axis, restricting right rotation during prone extension testing.

In PRI pattern assessment, which scenario BEST indicates a 'compensated' pattern?

Answer: The patient is asymptomatic but demonstrates clear asymmetrical patterning on assessment

A compensated PRI pattern means the patient has adapted to the imbalance and may be asymptomatic, yet the underlying asymmetrical patterning is still detectable on clinical assessment.

The 'zone of apposition' (ZOA) concept in PRI relates primarily to:

Answer: The dome-shaped contact of the diaphragm against the inner lower rib cage

In PRI, the ZOA refers to the area where the diaphragm apposes the inner aspect of the lower rib cage, which is critical for proper respiratory mechanics and trunk pressurization.

Which PRI muscle imbalance pattern is most associated with lumbar hyperextension and loss of rib cage flexion?

Answer: PEC pattern with bilateral posterior pelvic and thoracic chain overactivation

The PEC pattern involves bilateral overactivation of posterior pelvic and thoracic extensors, driving lumbar hyperextension, anterior pelvic tilt, and loss of rib cage flexion capacity.