When diagnosing sacral torsions, what is the relationship of the oblique axis to the seated flexion test?

• A. It is on the same side as the positive test
• B. It is opposite the side of the positive seated flexion test
• C. It is neutral with respect to the seated flexion test
• D. It is unrelated to the seated flexion test

Answer: (B)

In the context of diagnosing sacral torsions, understanding the relationship of the oblique axis to the seated flexion test is crucial. When a patient has a positive seated flexion test, it indicates that the ilium on that side is more restricted in its ability to move during flexion and extension. This restriction points to an issue with the sacrum, particularly in relation to its torsional position.

For a sacral torsion, the oblique axis occurs on the opposite side of the positive seated flexion test because the side of the positive test reflects movement restriction of the ilium, while the sacrum itself must twist in the opposite direction to accommodate that restriction. Therefore, if the seated flexion test is positive on the right side, the sacrum would likely be engaged to the left oblique axis. This relationship helps in identifying the precise torsion of the sacrum.

In summary, the correct answer illustrates that when there's a positive seated flexion test indicating an issue on one side, the oblique axis associated with the sacral torsion will be found on the opposite side. This understanding is essential in both diagnosis and treatment of sacral dysfunctions in clinical practice.