Accessory Sacro-Iliac Joint Ligaments Flashcards
1
Q
What accessory sacroiliac joint ligs connect to the ischium?
A
- sacrotuberous lig
- sacrospinous lig
2
Q
What joint classification is associated with the ligs of the sacroischium joint?
A
fibrous (amphiarthrosis) syndesmosis
3
Q
What are the attachment sites of the sacrotuberous lig?
A
- from lateral sacral crest at S4 and S5, the inferolateral angle of sacrum and the superolateral part of coccyx, the PSIS and the PIIS
- to the ischial tuberosity
4
Q
What is formed by the continuation of the sacrotuberous lig along the ischial ramus?
A
the falciform process
5
Q
What are the attachment sites of the sacrospinous lig?
A
- from the lateral margin of the lower sacral segments and the upper part of coccyx
- to the ischial spine
6
Q
What separates the greater sciatic and lesser sciatic foramen?
A
the sacrospinous lig
7
Q
What is the function of the sacroischial ligaments?
A
- they oppose the upward tilt of the sacral apex
- resist the rotation of sacrum between the innominate bones
