The lateral sacrococcygeal ligaments connect the lateral processes of the sacrum to the transverse processes of the coccyx, forming the lateral reinforcement of the sacrococcygeal joint.
Resist lateral coccygeal deviation, provide lateral stabilisation of the sacrococcygeal junction, and complete the three-dimensional constraint of the coccyx.
Asymmetric lateral sacrococcygeal ligament injury from a lateral fall onto the coccyx produces lateral deviation of the coccyx visible on AP pelvic X-ray. Injection targeting the lateral ligament complex addresses lateral coccydynia.
Lateral coccygeal deviation visible on AP X-ray from asymmetric lateral sacrococcygeal ligament injury, producing pain on sitting reproduced by lateral coccygeal palpation.
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