Sacrum Flashcards

1
Q

What part of the sacral ala is derived from the costal elemene

A

the anterior two thirds

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2
Q

the costal element and true transverse process of sacrum unite to form what feature

A

the sacral ala

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3
Q

how many firbrous (amphiarthrosis) syndesmosis joint surfaces are present on the S1 vertebral body

A

4

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4
Q

how many joint surfaces are present on the vertebral body of the first sacral segment

A

5

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5
Q

what muscles may attach to the first sacral vertebral body

A

psoas major

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6
Q

What is the reported angulation of the first sacral articular facets

A

they lie vertically in the coronal plane

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7
Q

what is the position of the sacral zygapophysis in adults

A

the zygapophysis lies in the coronal plane for L5/S1

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8
Q

What is the orientation of the first sacral superior articular facet

A

BUM backward upward and medial typically concave

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9
Q

what is the name given to the projection on the first sacral superior articular process

A

mammillary process

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10
Q

from the anterior view the intervertebral discs of sacrum will be replaced by what feature

A

transverse ridges

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11
Q

An imaginary line drawn along the dorsal midline of sacrum is identified as the

A

median sacral crest

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12
Q

what forms the median

A

fused spinous processes and their spinous tuvercles

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13
Q

What is the name given to the congenital condition in which the fifth lumbar spinous process is elongated the sacrum exhibits spina bifida and dorsiflexion produces pain

A

Knife clasps syndrome

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14
Q

an imaginary line drawn from the superior articular process of S1 to the sacral cornu will form what feature

A

intermediate sacral crest

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15
Q

What forms the intermediate sacral crest

A

fused articular processes and their facets

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16
Q

what features may be identified along the intermediate sacral creste

A

the mammillary process of S1 and the sacral cornu of S5

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17
Q

What is the remnant of the inferior articular process and facet of S5

A

the sacral cornu

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18
Q

What is the name of the inferior opening of the sacral spinal canal

A

the sacral hiatus

19
Q

what forms the lateral sacral crest

A

the fused transverse processes and transverse tubercles from S1-S5

20
Q

What is the sacral tuberosity

A

the enlarged transverse tubercle of S2

21
Q

what is the name of the joint formed by the sacral tuberoisty

A

the accessory sacro-illiac joint

22
Q

what muscle is sadi to attach to the dorsal surface of sacrum

23
Q

What feature is observed on the lateral surface of S1-S3

A

auricular surface

24
Q

what classification of joint is formed by the auricular surface of sacrum

A

synovial plane (diarthrosis arthrodia)

25
What feature does the anterior surface of the superior epiphyseal rim of S1 form
the sacral promontory
26
What ligament is attached to the sacral hiatus
the superficial posterior sacrococcygeal ligament
27
how many synovial joint surfaces are typically present at sacral cornu
4
28
what joint classifications are typically present at sacrum
fibrous (amphiarthrosis) syndesmosis cartilaginous (amphiarthrosis) symphysis synovial plane (diarthrosis arthrodia)
29
what forms the posterior boundary for the fifth sacral spinal nerve intervertebral foramen
sacral cornu, coccygeal cornu, superficial posterior sacrococcygeal ligament, and intercornual ligament
30
what fors the anterior boundary for the fifth sacral spinal nerve intervertebral foramen
vertebral body S5, vertebral body Co1, deep posterior sacrococcygeal ligament and intervertebral disc
31
what is the homolog for the posterior longitudinal ligament at S5
deep posterior coccygeal ligament
32
What is the homolog for the anterior longitudinal ligament at S5
anterior sacrococcygeal ligament
33
What is the homolog for the ligamentum flavum at S5
superficial posterior sacrococcygeal ligament
34
What forms the inferior boundary for the spinal canal
the union of the superficial posterior and deep posterior sacrococcygeal ligaments
35
What ligament is formed by the union of the superficial posterior sacrococcygeal and the deep posterior sacrococcygeal ligaments at Co1
the posterior sacrococcygeal ligament
36
what ligament is a homolog of the intertransverse ligament at S5
lateral sacrococcygeal ligament
37
What ligament divides the sciatic foramen into the greater and lesser sciatic foramen
sacrospinous ligament
38
which ligament has a broad attachment along the lateral margin of sacrum and coccyx and then attaches to the ischial tuberosity
sacro tuberous ligament
39
Which ligament represents a thickening of the fibrous capsule of the sacro iliac joint
anterior sacro iliac ligament
40
which ligament is the strongest of the sacro illiac ligament and is penetrated by dorsal rami of the sacral spinal nerves
interosseous sacro-iliac ligament
41
which ligament will attach the intermediate sacral crest of S1, lateral sacral crest of S2 to the posterior superior iliac spine
short posterior sacro-iliac ligament
42
which ligament attaches the lateral sacral crest of S3 and S4 to the posterior superior iliac spine
long posterior sacro-iliac ligament
43
what is the homolog for the capsular ligament at S5
intercornual ligament