What Is the Coccyx?
Coccyx is the small, triangular bone at the base of the spine, commonly called the tailbone. The coccyx connects with the sacrum and supports soft tissues involved in sitting, posture, and pelvic movement. Its position can help clinicians distinguish local tailbone pain from discomfort arising in the lumbar spine or sacroiliac region.
Quick Facts About Coccyx
Category
Lower spinal bone
Used for
Assessing tailbone and sitting-related pain
Common confusion
Tailbone pain versus sacroiliac or lumbar pain
Also called
Tailbone
Often discussed with
Back Pain Treatment
Key Takeaways About Coccyx
- The coccyx sits below the sacrum at the bottom of the spine.
- Tailbone position can affect sitting comfort and pelvic movement.
- Coccyx pain does not always come from the coccyx itself.
How Coccyx Works
The coccyx forms the lowest part of the spinal column and meets the sacrum at the sacrococcygeal joint. Its shape and position help distribute pressure when you sit, especially when your weight shifts toward the back of the pelvis. Ligaments and muscles attach around the area and support nearby pelvic movement.
Related glossary terms: Lumbar Spine, Sacroiliac Joint, Pelvic Tilt.
Clinicians assess the coccyx by reviewing the pain location, sitting tolerance, posture, and movement patterns. They may compare the coccyx with the sacrum and the sacroiliac joint because nearby structures can produce similar symptoms. A careful assessment helps identify whether discomfort is centered at the tailbone or referred from another part of the lower back or pelvis.
From the Arrowhead Clinic Chiropractor Garden City team
When we assess coccyx-related complaints, we ask how sitting, rising, and pelvic movement affect symptoms. Our team considers the lower back, sacrum, and surrounding soft tissues so the examination reflects the full area rather than the tailbone alone.
Coccyx in Practice: A Real-World Example
A person with back pain may notice sharper discomfort after sitting on a firm chair or leaning backward. During a back pain evaluation, the clinician checks whether the symptoms center over the coccyx or relate more closely to the lumbar spine or sacroiliac area.
Related Services
Related Terms
Lumbar Spine
Lumbar Spine is the lower section of the vertebral column between the thoracic spine and pelvis…
Sacroiliac Joint
Sacroiliac Joint is the connection between the sacrum at the base of the spine and the…
Pelvic Tilt
Pelvic Tilt is a change in the position of the pelvis that shifts its front edge…
Referred Pain
Referred Pain is discomfort felt in an area that differs from the tissue or structure producing…
Arrowhead Clinic Chiropractor Garden City
Have Questions About Coccyx?
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