What Is the Sacroiliac Joint?
Sacroiliac Joint is the connection between the sacrum at the base of the spine and the ilium of the pelvis. This joint transfers forces between the upper body and legs during standing, walking, and other movements. Strong ligaments support it, while limited motion helps maintain pelvic stability during daily activity.
Quick Facts About Sacroiliac Joint
Category
Pelvic joint
Used for
Assessing pelvic movement and stability
Common confusion
Often confused with lumbar spine pain
Also called
SI joint, sacroiliac articulation
Often discussed with
Prenatal Chiropractic Care, Chiropractic Adjustments
Key Takeaways About Sacroiliac Joint
- The joint connects the sacrum with each side of the pelvis.
- Its movement is small but supports force transfer during walking.
- Sacroiliac joint discomfort is not the same as low back pain.
How Sacroiliac Joint Works
The sacroiliac joint joins the sacrum with the pelvic ilium and helps move force between the trunk and legs. Its surfaces fit closely together, while strong connective tissues limit excessive motion. This design supports the pelvis during weight-bearing activities such as walking, standing, and changing position.
Related glossary terms: Pelvic Alignment, Lumbar Spine, Joint Restriction.
A clinician may assess the joint by reviewing movement, posture, tenderness, and nearby muscle function. The lumbar spine and hips can affect how the pelvis moves, so an assessment considers these areas together. Findings help distinguish a joint-related pattern from symptoms that may arise elsewhere.
From the Arrowhead Clinic Chiropractor Hinesville team
When we assess the sacroiliac joint during prenatal chiropractic care, we review pelvic motion, posture, and surrounding muscle tension. We also consider how pregnancy-related changes in balance and load may affect movement. Our team uses the examination findings to guide care that fits the patient’s current stage and comfort.
Sacroiliac Joint in Practice: A Real-World Example
During prenatal chiropractic care, a patient may report discomfort near one side of the pelvis when turning in bed or walking. The clinician may examine pelvic movement and nearby areas to determine whether the sacroiliac joint contributes to the pattern.
Related Terms
Pelvic Alignment
Pelvic Alignment is the relationship between the pelvis and nearby structures, including the lumbar spine, hips…
Lumbar Spine
Lumbar Spine is the lower section of the spinal column between the thoracic spine and pelvis…
Joint Restriction
A joint restriction is a reduced ability of a joint to move through its normal range…
Range of Motion
Range of Motion is the available movement at a joint, measured through a specific direction or…
Arrowhead Clinic Chiropractor Hinesville
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