Template:Joints
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Description[edit source]
The sacroiliac joint (simply called the SI joint) is the joint connection between the spine and the pelvis. It is a large diathrodial joint made up of the sacrum and the two innominates of the pelvis. Each innominate is formed by the fusion of the three bones of the pelvis: the ilium, ischium, and pubic bone.
Motions Available[edit source]
Ligaments & Joint Capsule
[edit source]
Muscles[edit source]
There are 35 muscles that attach to the sacrum or innominates which mainly provide stability to the joint rather than producing movements.
Muscles that attach to the sacrum or innominates:
- Latissimus dorsi
- Erector spinae
- Semimembranosus
- Semitendonosus
- Biceps femoris
- Sartorius
- Inferior gamellus
- Multifidus
- Obturator internus
- Obturator externus
- Piriformis
- Tensor fascia lata
- External oblique
- Internal oblique
- Transversus abdominus
- Rectus abdominis
- Gluteus medius
- Gluteus maxiumus
- Gluteus minimus
- Quadratus femoris
- Superior gemellus
- Gracilis
- Iliacus
- Adductor magnus
- Rectus femoris
- Quadratus lumborum
- Pectineus
- Psoas minor
- Adductor brevis
- Adductor longus
- Levator ani
- Sphincter urethrae
- Superficial transverse perineal ischiocavernous
- Coccygeus
- Pyramidalis
Closed Packed Position[edit source]
Open Packed Position[edit source]
Other Important Information[edit source]
Resources[edit source]
Recent Related Research (from Pubmed)[edit source]
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References[edit source]
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