sacrotuberous ligament

The sacrotuberous ligament contains the coccygeal branch of the inferior gluteal artery.

Biceps femoris could therefore act to stabilise the sacroiliac joint via the sacrotuberous ligament.

The membranous falciform process of the sacrotuberous ligament was found to be absent in 13% of cadavers.

It pierces the lower part of the sacrotuberous ligament, and winds around the inferior border of the gluteus maximus.

The sacrotuberous ligament (great or posterior sacrosciatic ligament) is situated at the lower and back part of the pelvis.

It pierces the sacrotuberous ligament to supply the skin in the region of the coccyx as well as the sacrococcygeal joint.

Laxity of this ligament along with the sacrotuberous ligament allows for this posterior rotation to occur.

More superficial ligaments (e.g., the sacrotuberous ligament) react to dynamic motions (such as straight-leg raising during physical motion).

It may be reduced or absent, or double, arising mainly from the sacrotuberous ligament and giving a slip to the femur or adductor magnus.

Its posterior half is covered by the sacrotuberous ligament, and in its entire length it covers the equally triangular coccygeus muscle, to which its closely connected.

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.

And, lastly, some fibers of the sacrospinous and sacrotuberous ligaments (arising from the spine of the ischium and the ischial tuberosity respectively) also attach to the coccyx.

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

Below, the obturator fascia is attached to the falciform process of the sacrotuberous ligament and to the pubic arch, where it becomes continuous with the superior fascia of the urogenital diaphragm.

Below, it is bounded by a sharp ridge which gives attachment to a falciform prolongation of the sacrotuberous ligament, and, more anteriorly, gives origin to the Transversus perinæi and Ischiocavernosus.

Together with the sacrotuberous ligament, it converts the greater sciatic notch into the greater sciatic foramen and the lesser sciatic notch into the lesser sciatic foramen.

The piriformis muscle originates from the superior margin of the greater sciatic notch (as well as the sacroiliac joint capsule and the sacrotuberous ligament and part of the spine and sacrum.

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 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.

The gluteus maximus muscle arises from the posterior gluteal line of the inner upper ilium, and the rough portion of bone including the iliac crest, the fascia covering the gluteus medius (gluteal aponeurosis), as well as the sacrum, coccyx, the erector spinae (lumbodorsal fascia), the sacrotuberous ligament.