Understanding.
A segment of the coccyx shifts backward relative to the superior segment. In some cases of coccydynia, this displacement appears when sitting, causing pain, and then reduces when standing. It can cause pain when standing up.
The assessment.
Dynamic lateral X-rays, taken while standing and then sitting, can highlight this abnormal mobility. They are interpreted in conjunction with the clinical examination. MRI is used, if necessary, to look for another cause or associated inflammation.
Treatments.
Seating adjustments and pain management are the first steps. Targeted injections may be offered. Coccygectomy is considered for debilitating chronic pain that is consistent with the assessment and resistant to appropriate treatments.
Follow-up.
The expected benefits and risks, particularly those related to scarring, must be evaluated before any intervention.
Your questions.
Why is my standing X-ray normal?+
A dynamic dislocation may resolve when the coccyx is no longer subjected to the stresses of sitting.
Coccygectomy.
Indications, preparation, procedure, follow-up, and risks: key information for discussing this option during a consultation.