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. Each person has a joint on both sides. These joints transfer force between the upper body and legs and allow small, controlled movements during standing, walking, bending, and changing position.
Quick Facts About Sacroiliac Joint
Category
Pelvic joint
Used for
Assessing lower back and pelvic movement
Common confusion
Often confused with lumbar or hip pain
Also called
SI Joint, Sacroiliac articulation
Often discussed with
Back Pain Treatment
Key Takeaways About Sacroiliac Joint
- Two joints connect the sacrum with the pelvic bones.
- Small movements help distribute force during walking and standing.
- Sacroiliac joint symptoms can resemble lumbar or hip problems.
How Sacroiliac Joint Works
The sacroiliac joint links the sacrum with the pelvic ilium and helps pass force between the spine and legs. Strong ligaments support the connection, while the joint allows limited movement as your body shifts weight. Walking, climbing stairs, and turning in bed all place changing demands on this area.
Related glossary terms: Lumbar Spine, Facet Joint, Joint Mobilization.
A clinical assessment considers how the pelvis, lower back, hips, and nearby muscles move together. A provider may compare sides, observe standing and walking, and check whether specific movements reproduce familiar discomfort. The lumbar spine and hip joint can create similar symptoms, so the sacroiliac joint is considered as part of the broader examination.
From the Arrowhead Clinic Chiropractor Savannah team
When we assess the sacroiliac joint during back pain treatment, we review pelvic movement alongside the lumbar spine and hips. We look for movement patterns that may help explain a person’s symptoms. Our team uses those findings to guide the care plan and track changes in function.
Sacroiliac Joint in Practice: A Real-World Example
A person may feel discomfort near one side of the low back after prolonged standing or a change in activity. During back pain treatment, the provider examines pelvic and hip movement to determine whether the sacroiliac joint may contribute to the pattern.
Related Services
Related Terms
Lumbar Spine
The lumbar spine is the lower section of the spinal column, located between the thoracic spine…
Facet Joint
A facet joint is a small paired joint at the back of the spine that connects…
Joint Mobilization
Joint Mobilization is a hands-on technique that applies controlled movement to a joint to improve motion…
Referred Pain
Referred Pain is discomfort felt in an area that differs from the tissue or structure producing…
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