Sacrum Region Flashcards
From the anterior view, the intervertebral discs of sacrum will be replaced by what feature?
Transverse ridges
What part of the sacral all continues along the ventral surface is sacrum to about S4?
The costal element
What forms the median sacral crest?
Fused spinous processes and their spinous tubercles
What in knife clasp syndrome?
The congenital condition in which the L5 spinous process is elongated, the sacrum exhibits spina bifida, and dorsiflexion produces pain
An imaginary line drawn from the superior articular process of S to the sacral Cornu will form what feature?
Intermediate sacral crest
What features may be IDed along the intermediate sacral crest?
The mammillary process of S1 and the sacral Cornu of S5
What does the sacral Cornu represent?
The inferior articular process and facet of S5
What is the name of the inferior opening of the sacral spinal canal?
The sacral hiatus
What features may be IDed along the lateral sacral crest?
S1 transverse tubercle, sacral tuberosity of S2, transverse tubercles of S3-S5
What is the sacral tuberosity?
The enlarged transverse tubercle of S2
What is the name of the joint formed by the sacral tuberosity?
The accessory sarco-iliac joint
What muscle is said to attach to the dorsal surface of sacrum?
Iliacus
What feature is IDed on the lateral surface of S1-S3?
Auricular surface
What classification of joint is formed by the auricular surface of sacrum?
Synovial plane (diarthrosis arthrodia)
What feature does the anterior surface of the superior epiphyseal rim so S1 form?
The sacral promontory
The continuation of the anterior longitudinal ligament below S3 forms what ligament?
The anterior sacrococcygeal ligament
The continuation of the posterior longitudinal ligament below S3 forms what ligament?
The deep posterior sacrococcygeal ligament
What ligament is attached to the sacral hiatus?
The superficial posterior sacrococcygeal ligament
What forms the posterior pound army for the 5th sacral spinal nerve intervertebral Foramen?
Sacral Cornu, coccygeal Cornu, superficial posterior sacrococcygeal ligament and intercornual ligament
What forms the anterior boundary for the 5th spinal nerve intervertebral Forman?
Vertebral body S5, vertebral body Co1, deep posterior sacrococcygeal ligament and intervertebral disc
What is the homolog for the posterior longitudinal ligament at S5?
Deep posterior sacrococcygeal ligament
What is the homolog for the anterior longitudinal ligament at S5?
Anterior sacrococcygeal ligament
What is the homolog for the ligamentum flavum at S5?
Superficial oysters or sacrococcygeal ligament
What forms the inferior boundary for the spinal canal?
The Union of the superficial posterior and deep so terror sacrococcygeal ligaments
What ligament is formed by the union of the superficial posterior sacrococcygeal ligaments at Co1?
The posterior sacrococcygeal ligaments
What ligament is a homolog of the intertransverse ligament at S5?
Lateral sacrococcygeal ligament
What ligament divides the sciatic Foramen into the greater and lesser sciatic foramina?
Sacrospinous ligament
Which ligament has a broad attachment along the lateral margin of sacrum and coccyx and then attaches to the is hail tuberosity?
Sacrotuberous ligament
Which ligament represents a thickening of the fibrous capsule of the sacro-iliac joint?
Anterior sacro-iliac ligament
Which ligament is the strongest of the sacro-iliac ligaments and is penetrated by dorsal rami so the sacral spinal nerves?
Interosseous sacro-iliac ligament
Which ligament will attach the intermediate sacral crest of S1, lateral sacral crest of S2 to the posterior superior iliac spine?
Short posterior sacrococcygeal-iliac ligament
Which ligament attaches the lateral sacral crest of S3 and S4 to the posterior superior iliac spine?
Long posterior sacro-iliac ligament
What is the homolog for the inferior articular process and facet at S5?
Sacral Cornu
What is the homolog for the superior articular process and facet at Co1?
Coccygeal Cornu
What is the homolog for the capsular ligament at S5?
Intercornual ligament
Which sacral segment is described as wedge-shaped from a lateral view?
The first sacral segment
What muscle(s) may attache to the first sacral vertebral body?
Psoas major
What is the position of the sacral zygapophysis in children?
The zygapophysis lies in the coronal plane
What is the position o fate sacral zygapophysis in adults?
The zygapophysis lies in the coronal plane for L5/S1
What is the orientation of the first sacral superior articular facet?
Backward, upward, medial (BUM; typically concave
What muscles will attach to the sacral mammillary processes?
Multifidis
What muscles may attach to the median sacral crest?
Latissimus dorsi, Iliocostalis lumborum, longissimus thoracis
An imaginary line drawn from the TVP of S1 to the inferior lateral sacral angel will form what feature?
The lateral sacral crest
