Which of the following is the least indicative of SI joint dysfunction?

• A. Thigh thrust test
• B. Compression test
• C. Pelvic tilt assessment
• D. Sacral thrust test

Answer: (C)

The pelvic tilt assessment is the least indicative of sacroiliac (SI) joint dysfunction because it primarily evaluates the mobility and stability of the pelvis rather than the specific function of the SI joint itself. While pelvic tilt may provide some information about overall pelvic alignment and mechanics, it does not directly assess the integrity or function of the SI joint like the other tests do.

In contrast, the thigh thrust test, compression test, and sacral thrust test are all specific evaluations aimed at assessing the SI joint. The thigh thrust test involves applying a force along the femur while the patient is positioned supine, directly targeting the SI joint's stability and pain response. The compression test evaluates the joint through a compressive force over the pelvis that can provoke pain if the SI joint is dysfunctional. The sacral thrust test involves a downward force on the sacrum, which can also elicit pain if there is dysfunction present in the SI joint.

These tests are designed to provoke symptoms or reveal dysfunction specifically related to the sacroiliac joint, making them more indicative of SI joint dysfunction compared to the pelvic tilt assessment, which is more general and does not isolate the joint itself.