What are the restrictions for a PLS?

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What are the restrictions for a PLS?

A PLS describes a pattern where movement is restricted in flexion and in rotation and lateral bending toward the same side. So, the restriction pattern being flexion, left rotation, and left lateral bend fits a left-sided limitation across the three planes. In three-planar testing of a spinal segment, this concordant limitation suggests the left posterior elements (facet joints and surrounding capsule) and related structures are restricting motion when the spine is moving toward flexion and toward the left. That makes flexion with left rotation and left lateral bend the pattern that best matches a left-sided restriction. The other combinations would imply different directional patterns (opposite sides or different planes) and don’t align with the unilateral left-sided restriction described here.

A PLS describes a pattern where movement is restricted in flexion and in rotation and lateral bending toward the same side. So, the restriction pattern being flexion, left rotation, and left lateral bend fits a left-sided limitation across the three planes. In three-planar testing of a spinal segment, this concordant limitation suggests the left posterior elements (facet joints and surrounding capsule) and related structures are restricting motion when the spine is moving toward flexion and toward the left. That makes flexion with left rotation and left lateral bend the pattern that best matches a left-sided restriction.

The other combinations would imply different directional patterns (opposite sides or different planes) and don’t align with the unilateral left-sided restriction described here.

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