What Is the Coccyx?
Coccyx is the small, triangular bone at the base of the spine, beneath the sacrum. The coccyx forms the lowest part of the spinal column and connects with nearby ligaments, muscles, and pelvic structures. The coccyx supports tissue attachment involved in sitting, posture, and movement, and can contribute to pain after injury or strain.
Quick Facts About Coccyx
Category
Spinal bone
Used for
Tissue attachment and seated support
Common confusion
Often confused with the sacroiliac joint
Also called
Tailbone
Often discussed with
Back Pain Treatment
Key Takeaways About Coccyx
- The coccyx sits below the sacrum at the base of the spine.
- Coccyx symptoms may change with sitting, rising, or leaning backward.
- The coccyx is not the same structure as the sacroiliac joint.
How Coccyx Works
Coccyx movement is limited compared with movement in the neck or lower back. Small motions can occur where the coccyx meets the sacrum, especially as you sit, stand, or shift your weight. Ligaments and muscles around the pelvic floor and buttocks help support the area.
Related glossary terms: Lumbar Spine, Sacroiliac Joint, Pelvic Girdle Pain.
A back pain assessment considers the coccyx alongside the sacrum, lumbar spine, and sacroiliac joint. A clinician may review the pain pattern, examine posture and movement, and check for tenderness around the lower spine. The coccyx can be involved after a fall, prolonged pressure, childbirth, or repeated strain. Symptoms may also come from nearby tissues, so the painful location does not always identify the only contributing structure.
From the Arrowhead Clinic Chiropractor Newnan team
When we assess coccyx-related concerns, we review the pain pattern, sitting tolerance, posture, and movement of the lower back and pelvis. We also consider nearby structures because tenderness near the coccyx can overlap with sacral, pelvic, or soft-tissue problems.
Coccyx in Practice: A Real-World Example
A person with back pain may notice sharper discomfort near the coccyx when sitting on a firm chair or moving from sitting to standing. The evaluation considers the coccyx and nearby pelvic structures together.
Related Services
Related Terms
Lumbar Spine
Lumbar Spine is the lower section of the spinal column between the rib-bearing back and the…
Sacroiliac Joint
A sacroiliac joint is the connection between the sacrum at the base of the spine and…
Pelvic Girdle Pain
Pelvic Girdle Pain is discomfort arising from the joints and supporting tissues around the pelvis. The…
Spinal Cord
The spinal cord is a long bundle of nerve tissue that connects the brain with nerves…
Arrowhead Clinic Chiropractor Newnan
Have Questions About Coccyx?
Contact Arrowhead Clinic Chiropractor Newnan for practical guidance on Coccyx and related chiropractor work in Newnan.