sacrospinous ligament

It then curves around the sacrospinous ligament to enter the perineum through the lesser sciatic foramen.

The Coccygeus is a muscle of the pelvic floor, located posterior to levator ani and anterior to the sacrospinous ligament.

Above the ischial spine is a large notch, the greater sciatic notch, converted into a foramen by the sacrospinous ligament.

The pudendal vessels and nerve pass behind the sacrospinous ligament directly medially and inferiorly to the ischial spine.

The extrinsic sacroiliac joint ligaments (the sacrotuberous and sacrospinous ligaments) limit the amount the sacrum flexes (or nutates).

The coccygeal branch of the inferior gluteal artery passes behind the mid-portion of the sacrospinous ligament and pierces the sacrotuberous ligament at multiple locations.

However, the studies and surgical methods cited above generally focused on the Alcock's canal and the area between the sacrotuberous and sacrospinous ligaments as likely sites for entrapment.

If the pudendal nerve becomes entrapped between this ligament and the sacrospinous ligament causing perineal pain, the sacrotuberous ligament is surgically severed to relieve the pain.

The thin lower half of the lateral surface gives attachment to the sacrotuberous and sacrospinous ligaments, to some fibers of the Gluteus maximus behind, and to the Coccygeus in front.

The most important accessory ligaments of the sacroiliac joint are the Sacrospinous ligament and sacrotuberous ligaments which stabilize the hip bone on the sacrum and prevent the promonotory from tilting forward.

The borders of the coccyx are narrow, and give attachment on either side to the sacrotuberous and sacrospinous ligaments, to the coccygeus in front of the ligaments, and to the gluteus maximus behind them.

Heavy and prolonged bicycling, especially if an inappropriately shaped or incorrectly positioned bicycle seat is used, may eventually thicken the sacrotuberous and/or sacrospinous ligaments and trap the nerve between them, resulting in PNE.

The main body of the inferior gluteal artery leaves the pelvis posteriorly to the upper border of the sacrospinous ligament, to follow the inferior portion of the sciatic nerve out of the greater sciatic foramen.

It is converted into a foramen, the lesser sciatic foramen, by the sacrotuberous and sacrospinous ligaments, and transmits the tendon of the Obturator internus, the nerve which supplies that muscle, and the internal pudendal vessels and nerve.

An opening between the pelvis and the posterior thigh, the foramen is formed by the sacrotuberous ligament which runs between the sacrum and the ischial tuberosity and the sacrospinous ligament which runs between the sacrum and the ischial spine.

The inferior gluteal artery, from a branch of the internal iliac artery, pass behind the sciatic nerve and the sacrospinous ligament and is left uncovered in a small opening above the top of the sacrospinous ligament.

The other notches, one on either side, are formed by the sacrum and coccyx behind, the ischium in front, and the ilium above; they are called the sciatic notches; in the natural state they are converted into foramina by the sacrotuberous and sacrospinous ligaments.

It is a triangular plane of muscular and tendinous fibers, arising by its apex from the spine of the ischium and sacrospinous ligament, and inserted by its base into the margin of the coccyx and into the side of the lowest piece of the sacrum.

The sacrospinous ligament (small or anterior sacrosciatic ligament) is a thin, triangular ligament attached by its apex to the ischial spine, and medially, by its broad base, to the lateral margins of the sacrum and coccyx, deep to the sacrotuberous ligament with which its fibers are intermingled.