Prone Torsion Test for Lumbar Instability | Rationale & Interpretation

The video tutorial explains the prone torsion test, an alternative method for assessing rotational lumbar instability. It covers the procedure, including hand positioning and force application on vertebrae L4 and L5, and explains the concept of contralateral rotation. The video also compares the prone torsion test with the specific torsion test, highlighting differences in body rotation and expected outcomes.

What is the primary purpose of the prone torsion test?

• To test for lumbar compression

• To assess lumbar flexion

• To evaluate rotational lumbar instability

• To measure lumbar extension

Which hand is used to stabilize the L5 spinous process during the test?

• Right hand

• Left hand

• Cranial hand

• Caudal hand

In the prone torsion test, what is the role of the cranial hand?

• To hold the patient's body in place

• To measure the angle of rotation

• To apply a rotational force on the L4 spinous process

• To stabilize the L5 vertebra

What does moving the spinous process to the left indicate in terms of rotation?

• Left rotation

• Right rotation

• Forward rotation

• No rotation

How is contralateral rotation defined in the context of the prone torsion test?

• Rotation in a circular motion

• No rotation occurs

• Rotation in the same direction as the spinous process movement

• Rotation opposite to the spinous process movement

What is a key difference between the prone torsion test and the specific torsion test?

• The prone test involves body rotation

• Both tests involve body rotation

• The specific test does not involve body rotation

• The prone test does not involve body rotation

What indicates a positive result in the prone torsion test?

• Minimal movement of the spinous process

• Excessive rotation of the cranial vertebra

• No movement of the spinous process

• Equal rotation on both sides