Lumbosacral Joint/Sacrococcygeal Joint/Sacro-Iliac Joint and Accessory Sacro-Iliac Joint Ligaments Flashcards
Based on current literature what common ligaments are absent at the lumbosacral joint?
ligamentum nuchae, interspinous ligament and suprapsinous
Which ligaments replace the intertransverse ligament at the lumbosacral joint?
the ililoumbar ligament and lumbosacral ligament
Which of the current ligaments from the iliolumbar ligament complex represents the iliolumbar ligament of classical descriptions?
the superior iliolumbar ligament
Which ligament from the iliolumbar ligament complex will attach to the sacral ala?
the inferior iliolumbar ligament
Which ligament from the iliolumbar ligament complex represents the lumbosacral ligamentof classical descriptions?
the inferior iliolumbar ligament
What are the attachment sites for the acccessory iliolumbar ligament?
the transverse process of L4 and the iliac crest
Which vertebral couple of the lumbar spine has the greatest range of motion?
L5/S1
Which range of motion is greatest for all lumbar vertebral couples?
flexion - extension
Which range of motion is least for L1 - L5 vertebral couples?
one side axial rotation
Which range of motion is least for the L5/S1 vertebral couple?
one side lateral bending
List, in order, from cranial to caudal the ligaments forming the anterior boundary of the spinal column.
the anterior atlanto-occipital ligament, anterior atlanto-axial ligament, anterior longitudinal ligament and the anterior sacrococcygeal ligament
List, in order, from cranial to caudal the ligaments forming the anterior boundary of the spinal canal
the membrana tectoria, posterior longitudinal ligament, and deep posterior sacrococcygeal ligament
List, in order, from cranial to caudal the ligaments forming the posterior boundary of the spinal canal.
the posterior atlanto-occipital ligament, the posterior atlanto-axial ligament, ligamentum flavum, and the superficial posterior sacrococcygeal ligament
What forms the closure for the spinal canal inferiorly?
the fusion of the deep posterior sacrococcygeal ligaments with the superficial posterior sacrococcygeal ligament
What is the homolog of the intertransverse ligament at the sacrococcygeal joint?
the lateral sacrococcygeal ligament
What is the homolog of the capsular ligament at the sacrococcygeal joint?
the intercornual ligament
What does the sacral cornu represent?
the inferior articular process and facet of S5
What is the auricular surface of the ilium composed of?
articular cartilage, interspersed with fibrocartilage
What is the superficial appearance of the auricular surfaces of the sacro-iliac joint by age 15?
the sacrum develops a sacral groove while the ilium develops an iliac ridge
Which gender is biased with greater uneveness of the auricular sufaces of the sacro-iliac joint?
males
What forms the accessory sacro-iliac joint?
the sacral tuberosity and the iliac sulcus
What pathological or age-related modifications of the sacro-iliac joint may occur?
degenerative arthrosis and ankylosis
What does degenerative arthorsis mean?
a condition of degeneration of the joint, sometimes referred to as degenerative joint disease (DJD)
What does ankylosis mean?
a condition of fibrous adhesion occurs within the joint
What is the age and surface bias associated with degenerative arthrosis of the sacro-iliac joint?
age 40, the iliac auricular surface
What is the age and gender bias associated with ankylosis of the sacro-iliac joint?
age 50 and male bias particularly in African American males
What movements at the sacro-iliac joint are described as forward nodding and backward nodding?
nutation and counternutation, respectively
What is the age and gender bias assocaited with ossification of the anterior sacro-iliac ligament?
age 40 and male bias
Which is the strongest of the sacro-iliac ligaments?
the interosseous sacro-iliac ligament
What are the attachment sites of the interosseous sacroiliac ligament?
at the sacral tuberosity and iliac sulcus
What is the relationship between the capsular and interosseous sacroiliac ligaments?
the interosseous sacro-iliac ligament replaces the capsular ligament posteriorly
What passes between the layers of the interosseous sacro-iliac ligament?
dorsal rami from the sacral spinal nerves
What ligament blends with the lateral border of the long posterior sacro-iliac ligament?
the sacrotuberous ligament
What forms the falciform process?
the continuation of the sacrotuberous ligament along the ischial ramus
What seprates the greater and lesser sciatic foramina?
the sacrospinous ligament
