Which test is indicative of spinal instability?

• A. McKenzie Test
• B. Posterior Pelvis Pain Provocation Test
• C. Slump Test
• D. Spinal Movement Test

Answer: (B)

The Posterior Pelvis Pain Provocation Test is indicative of spinal instability as it assesses the integrity and stability of the sacroiliac joint and related structures. In individuals with spinal instability, there may be dysfunction or excessive movement at the joint, leading to pelvic pain or discomfort that can be elicited through this test.

During the Posterior Pelvis Pain Provocation Test, the clinician provides a force on the pelvis to provoke pain by stressing the structures associated with stability. If the test results in pain, it suggests an underlying issue with the stability of the sacroiliac joint, indicating potential instability in the pelvis and lumbar spine region.

While other tests like the McKenzie Test, Slump Test, and Spinal Movement Test are important in evaluating various conditions related to the spine or lower back, they are not primarily focused on diagnosing spinal instability. The McKenzie Test primarily assesses directional preference in patients with lumbar pain, the Slump Test evaluates neural tension, and the Spinal Movement Test primarily assesses range of motion and mechanical function rather than specific stability problems. Thus, the Posterior Pelvis Pain Provocation Test is the most relevant in indicating spinal instability.