Ligaments and joints of lumbosacral spine and pelvic girdle
Sacroiliac joint opened; interosseous sacroiliac ligament, left lateral view
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Image #215-7
Ligaments and joints of lumbosacral spine and pelvic girdle
Sacroiliac joint opened; interosseous sacroiliac ligament, left lateral view
The left ilium has been detached to display the auricular surface of the sacrum and the interosseous sacroiliac ligaments.
- Interosseous sacroiliac ligaments (pointer indicates only a small part of the area occupied by the numerous bands that comprise these ligaments which have been cut at their attachments to the ilium)
- Iliolumbar artery
- Femoral nerve
- Articular surface sacrum
- Ventral sacroiliac ligament
- Sacral nerve I
- Piriform muscle (cut across)
- Spinous process vertebra L. V
- Supraspinous ligament
- Interspinous ligament L. V - S. I (convex in shape due to compression by extension of vertebra on sacrum)
- Median sacral crest
- Dorsal sacroiliac ligament (cut across)
- Iliac branch of iliolumbar artery
- Area of articular surface in which fibrocartilage has been damaged (remainder of auricular surface intact)
- Joint capsule (lined internally by synovial membrane)