|
Joints and Ligaments of the Pelvis and Perineum - Listed Alphabetically |
| Joint or ligament |
Description |
Notes |
iliolumbar ligament
see image |
this is a strong ligament passing from the tip of the transverse process of the fifth lumbar vertebra to the posterior part of the inner lip of the iliac crest (upper margin of ilium |
The ililumbar ligament strengthen the lumbosacral joint assisted by the lateral lumbosacral ligament, and, like all other vertebral joints, by the posterior and anterior longitudinal ligaments, the ligamenta flava, and the interspinous and supraspinous ligaments. Detailed information about the spine can be found here. |
lumbosacral joint
see image |
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. Detailed information about the spine can be found here. |
nuchal ligament
see image |
also known as the paxwax ligament, this is a midline ligament that extends posteriorly from the spinous processes of cervical vertebrae and extends from the base of the skull to the 7th cervical vertebra |
a syndesmosis; it provides muscle attachments to the cervical spinous processes without the necessity of long spinous processes that would hinder extension of the neck. Detailed information about the spine can be found here. |
pubic symphysis
see image |
the midline joint uniting the superior rami of the two pubic bones. |
a symphysis; the anterior width of the symphysis pubis is 3-5 mm greater than its intrapelvic posterior width. This joint is connected by fibrocartilage and may contain a fluid filled cavity, the center is avascular; possibly due to the nature of the compressive forces passing through this joint which may lead to harmful vascular disease. The ends of both pubic bones are covered by a thin layer of hyaline cartilage which is attached to the fibrocartilage. The fibrocartilaginous disk is reinforced by a series of ligaments. These ligaments cling to the fibrocartilaginous disk to the point that fibers intermix with it. Detailed information about the spine can be found here. |
sacroiliac joint
see image |
the articulation between the ala of the sacrum and the auricular surface of the ilium. |
a synovial joint; the sacroiliac joint or SI joint is the joint in the bony pelvis between the sacrum and the ilium of the pelvis, which are joined together by strong ligaments. In humans, the sacrum supports the spine and is supported in turn by an ilium on each side. The joint is a strong, weight bearing synovial joint with irregular elevations and depressions that produce interlocking of the two bones. The human body has two sacroiliac joints, one on the left and one on the right, that often match each other but are highly variable from person to person. Detailed information about the spine can be found here. |
sacrospinous ligament
see image |
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. Detailed information about the spine can be found here. |
sacrotuberous ligament
see image |
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. Detailed information about the spine can be found here. |
