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What causes sacroilliac joint pain?

Rick Olderman
Physical Therapy

The SI joint or sacro-iliac joint is located in the pelvis where the sacrum and ilia meet. Many people suffering from pain in the back of the pelvis are told they have SI joint dysfunction. But what does this mean? The tensor fascia lata (TFL), rectus femoris, and sartorius muscles cause problems at this joint. They can become tight and rotate one side of the pelvis forward, which can cause shear at the SI joint. This happens because these three muscles are attached onto the ilium, not the sacrum. The ilium rotates forward a little more than the sacrum, which twists the SI joint. A relatively pronated foot may also be contributing to these issues, although this is rare.

Fixing You: Hip & Knee Pain: Self-treatment for IT band friction, arthritis, groin pain, bursitis, knee pain, PFS, AKPS, and other diagnoses

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Fixing You: Hip & Knee Pain: Self-treatment for IT band friction, arthritis, groin pain, bursitis, knee pain, PFS, AKPS, and other diagnoses

Hip and knee pain are often a result of poor pelvic muscle performance in combination with poor walking habits. This combination creates tracking problems in the hip socket or excessive rotation at...

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Important: This content reflects information from various individuals and organizations and may offer alternative or opposing points of view. It should not be used for medical advice, diagnosis or treatment. As always, you should consult with your healthcare provider about your specific health needs.