
Structure
The sacrococcygeal joint is a is a secondary cartilaginous joint between the apex of the sacrum and the base of the coccyx. It contains a small disc of fibrocartilage and it is reinforced by paired anterior, lateral, and posterior sacrococcygeal ligaments.
Function
The sacrococcygeal joint permits little movement. However, on occasion it may be synovial which permits a greater mobility.
