Back Injuries: Back Sprain (Sacroiliac Region) Symptoms and Treatment
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What types of lower back sprains are there?

Back sprains are of three types;

• A mild or (grade I) strain, which is tearing of some ligament fibers, with associated muscle spasm. There is no loss of function.
• A moderate or (grade II) sprain, which is a rupture of a portion of the ligament, resulting in some loss of function.
• A severe or (grade III sprain), which is a complete rupture of the ligament or complete separation of the ligament from the bone. There is total loss of function. A severe sprain may require surgical repair.

What musculature is involved in a lower back sprain?

The specific body parts involved are the ligaments of the sacroiliac region and also soft tissues surrounding the sprain, including nerves, periosteum (covering of bone), blood vessels and muscle. The sacrum (spinal region) and ilium (bones of the pelvis).

How do I know if I've sprained my lower back?

The signs and symptoms of a lower back sprain are:

1. Severe pain at the time of injury, radiation of pain into the buttocks or hip, but no lower.
2. A feeling of popping or tearing in the sacroiliac region.
3. Tenderness and swelling at the injury site.
4. Bruising (sometimes) that appears soon after injury.

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