The sacrococcygeal ligament complex comprises the anterior, posterior, and lateral sacrococcygeal ligaments enclosing the sacrococcygeal joint, providing the complete fibrous enclosure of this vestigial coccygeal joint.
Provides the complete sacrococcygeal joint support, resists coccyx displacement from trauma, and encloses the sacral hiatus used for caudal epidural access. The coccyx has limited but important functional movement during sitting and defaecation.
Coccydynia (coccyx pain) from sacrococcygeal ligament disruption in falling injuries produces pain on sitting, especially on firm surfaces. The coccyx may be hypermobile on dynamic imaging. Coccygectomy for refractory coccydynia requires division of all sacrococcygeal ligament attachments.
Ligamentous disruption or hypermobility of the sacrococcygeal complex from trauma producing chronic pain on sitting, managed by manipulation, injection, or coccygectomy for refractory cases.
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