Coccydynia Related to Calcium Crystal Deposition

Authors:
  • JMJean-Yves Maigne
    Jean-Yves Maigne
  • TBThomas Bardin
    Thomas Bardin
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Abstract
Study of 4 cases of severe coccydynia revealing calcium deposits in the sacrococcygeal and intercoccygeal joints. To highlight calcium crystal deposition as a cause of sudden-onset coccydynia. Intervertebral disc calcification in the cervical, thoracic, or lumbar spine is well known, but calcifications in the sacrococcygeal or intercoccygeal joints with symptoms have never been reported. All 4 patients presented with severe, sudden-onset coccydynia. Radiographs of the coccygeal area showed calcific deposits in the sacrococcygeal or intercoccygeal joints. Patients received a short course of oral corticosteroids or steroid injections. Conservative management provided prompt relief in all but one case. In 2, the resolution of the calcific deposits as seen on follow-up radiography was highly suggestive of their apatite origin. Calcium crystal deposition in the sacrococcygeal or intercoccygeal joints can cause coccydynia. Conservative treatment is effective as a first-line approach.

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