Joints and Ligaments of the Pelvis and Perineum - Listed Alphabetically

Joint or ligament Description Notes
iliolumbar ligament a ligament that connects the transverse process of the L5 vertebra to the iliac crest the iliolumbar ligament stabilizes the lumbosacral joint
lumbosacral joint the articulation between the L5 vertebral body and the body of the first sacral segment  a symphysis; this articulation is characterized by all of the features of a typical intervertebral articulation which include: an intervertebral disk, anterior and posterior longitudinal ligaments, synovial joints between articular processes, ligamenta flava, interspinal and supraspinal ligaments; a strong iliolumbar ligament strengthens this joint
pubic symphysis the midline joint uniting the superior rami of the two pubic bones a symphysis; a fibrocartilage interpubic disk unites the bones; the subpubic angle in the female is greater than the subpubic angle in the male
sacroiliac joint the articulation between the ala of the sacrum and the auricular surface of the ilium a synovial joint; the fibrous articular capsule is thickened dorsally and ventrally to form the sacroiliac ligaments; because of the interlocking nature of the joint surfaces and the strong sacroiliac ligaments, only limited movement is permitted at the sacroiliac joint
sacrospinous ligament the ligament that connects the ischial spine to the lateral surface of the sacrum and coccyx together with the sacrotuberous ligament, it converts the greater and lesser sciatic notches into greater and lesser sciatic foramina
sacrotuberous ligament the ligament that connects the ischial tuberosity to the lateral surface of the sacrum and coccyx together with sacrospinous ligament, it converts the greater and lesser sciatic notches into greater and lesser sciatic foramina