Sacrum

Question 1

If the deep sacral sulcus and ILA are on the same side, what kind of SD is it?

Answer 1

A sacral torsion.

Question 2

If the deep sacral sulcus and ILA are on opposite side (i.e. deep right sulcus and left ILA) what kind of SD is it?

Answer 2

A sacral shear (i.e a unilateral flexion or extension).

Question 3

If both sacral sulci are deep what are the possible diagnoses?

Answer 3

It is either bilateral flexion or extension (a spring test can determine which).

Question 4

What can a seated flexion test reveal for sacral torsions?

Answer 4

It can tell the axis (i.e a right seated flexion test means it is a left axis, ect). Keep in mind that the axis is opposite the flexion test.

Question 5

What can a seated flexion test reveal for sacral shears?

Answer 5

It tells which side is dysfunctional (ex. if a right flexion test then a deep right sulcus will mean unilateral right flexion, while a superficial right sulcus will mean a right unilateral extension, ect).