Template:Joints: Difference between revisions
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== Motions Available == | == Motions Available == | ||
== Ligaments & Joint Capsule<br> | == Ligaments & Joint Capsule == | ||
Ligaments: | |||
Anterior Sacroiliac- an anteroinferior thickening of the fibrous capsule and is weak and thin when compared to the other ligaments of the joint. It connects the third sacral ligament to the lateral side of the preauricular sulcus and is better developed closer to the arcuate line and the PSIS. This ligament is injured most often and is a common source of pain because its thinness. | |||
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Interosseus Sacroiliac- forms the major connection between the sacrum and the innominate and is a strong, short ligament deep to the posterior sacroiliac ligament. It resists anterior and inferior movement of the sacrum. | |||
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Posterior (Dorsal) Sacroiliac-<strike></strike> | |||
== Muscles == | == Muscles == | ||
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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]
Ligaments:
Anterior Sacroiliac- an anteroinferior thickening of the fibrous capsule and is weak and thin when compared to the other ligaments of the joint. It connects the third sacral ligament to the lateral side of the preauricular sulcus and is better developed closer to the arcuate line and the PSIS. This ligament is injured most often and is a common source of pain because its thinness.
Interosseus Sacroiliac- forms the major connection between the sacrum and the innominate and is a strong, short ligament deep to the posterior sacroiliac ligament. It resists anterior and inferior movement of the sacrum.
Posterior (Dorsal) Sacroiliac-
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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