Coccydynia

(Coccyalgia; Coccygeal Pain; Coccygodynia; Pain, Tailbone; Pain, Coccygeal; Tailbone Pain)

Definition

Coccydynia is pain in the area of the coccyx (tailbone). It is a small, curved, V-shaped bone at the bottom of the spine.
The Coccyx
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Causes

The tailbone can be found at the end of the spinal column. It supports the body in a sitting position and helps transfer body weight during changes in sitting positions. It is also an area where muscles, nerves, ligaments, and tendons from other locations in the body come together. Excess pressure can affect these structures.In most cases, the specific cause of coccydynia is unknown. Other times, it may be caused by:
  • Trauma or injury from falls
  • Tailbone shift during childbirth
  • Other stress that affects that tailbone
Pain can come from bones, muscles, nerves, or supporting structures.

Risk Factors

Coccydynia is more common in females. Other factors that may increase your chance of coccydynia include:
  • Brittle bones, which can occur with osteoporosis
  • Joint inflammation or changes in bone structure, which can occur with arthritis
  • Participation in contact sports or certain activities, such as horseback riding
  • Dislocation from injury or obesity , which can cause bones to shift
  • Prolonged sitting on hard surfaces
  • Low back pain
  • Infections, such as osteomyelitis
  • Spinal cyst or tumor

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