Understanding.
Avascular necrosis, or osteonecrosis, is the death of bone tissue due to a lack of blood supply. In the coccyx, it has been described in a few publications; it should not be confused with simple inflammation.
The assessment.
The evaluation considers the patient's history, physical examination, and appropriate imaging, including MRI depending on the context. Isolated bone edema is not sufficient to confirm necrosis: other causes must be considered.
Treatments.
There is no firmly established standard strategy specifically for this rare location. Treatment is individualized after confirmation of the diagnosis and assessment of the impact.
Follow-up.
A specialist opinion and, if necessary, a review of the imaging allow for discussion of the options without automatically applying treatments used for other bones.
Your questions.
Is this a common cause of coccydynia?+
No. Available data is limited, and mechanical causes are much more commonly described.
Coccygectomy.
Indications, preparation, procedure, follow-up, and risks: key information for discussing this option during a consultation.