Unit Two Sacrum And Pelvis Flashcards

1
Q

The sacrum is located where

A

The base of the spine

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2
Q

How many segments in the sacrum

A

5 fused segments

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3
Q

What is the shape of the sacrum

A

Inverted triangle

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4
Q

Describe the shape of the sacrum

A

Concave to the anterior and positioned so the base is more anterior than the apex

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5
Q

What body is the base of the sacrum

A

S1

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6
Q

Where is the widest portion of the sacrum

A

From left to right

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7
Q

Sacral alae AKA

A

Lateral sacral masses

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8
Q

What is the sacral promontory

A

The base of the sacrum

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9
Q

Superior articular process of the sacrum articulates with what

A

The last lumbar normally the L5

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10
Q

The facets of the sacrum face

A

Coronary (front to back) than sagittally (left or right)

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11
Q

When do the sacral vertebrae fuse fully

A

At age 30

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12
Q

Characteristics of the female sacrum

A

Shorter, wider and more curved

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13
Q

The sacral canal is a continuation of the

A

Vertebral canal

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14
Q

Sacral vertebrae connect the spine to what

A

The pelvic girdle at the sacroiliac joint

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15
Q

The auricular or the articular surface of the sacrum is also the

A

Lateral surface

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16
Q

What joint is at the articular surface of the sacrum

A

SI joint

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17
Q

Where is the sacral tuberosity on the sacrum

A

A rough prominence on the lateral surface of the sacrum posterior to the articular surface

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18
Q

What attaches to the sacral tuberosity of the sacrum

A

Posteriorsacroiliac ligaments

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19
Q

What is the lateral inferior angle of the sacrum

A

Lateral aspect of the last two segments

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20
Q

Where is the rough surface of the sacrum located

A

Posterior

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21
Q

Where is the superior articular process located on the sacrum

A

Posterior

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22
Q

Where is the medians sacral crest located on the sacrum

A

Posterior

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23
Q

Where are the sacral grooves located on the sacrum

A

Posterior

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24
Q

Where are the articular (intermediates) sacral crest located on the sacrum

25
How many posterior sacral foramina
8 individual which is four pairs
26
What is analogous to the TVP on the sacrum
Lateral sacral crest
27
What is the only normally (naturally) occurring spina bifida in the vertebral column
Sacral hiatus
28
What is the last pair of articular processes in the sacrum
Sacral cornua
29
Describe male pelvis
Sacrum is narrow but longer, oriented vertically, lumbosacral angle decreased
30
Describe female pelvis
Sacrum is wider and shorter, oriented horizontally, lumbosacral angle increased, anterior surface more curved
31
What does Qangle mean
Quadriceps angle
32
What sex has a larger Q angle
Female
33
How many fused segments in a coccyx
4
34
What type of ossification in a coccyx
Primary center of ossification
35
How does the coccyx segment form
Develop one every five years
36
When do the segments of the coccyx fuse completely together
Between ages 25 and 30
37
When is the last segment formed of the coccyx
Age 20
38
Shape of coccyx
Triangle
39
Describe the shape of the SI joint
Inverted L or C shape
40
The articular capsule of the SI joint is located where
Anterior surface
41
What attaches to the posterior aspect of the SI joint
Only ligaments and muscles
42
Where is the nerve supply of the SI joints
S1 and S2 segments
43
What may be responsible for 50% of all low back pain
SI joint
44
What is the movement of the SI joint
2 mm of 2 degrees of motion
45
How many different type of joints in the pelvic ring
5
46
What are the five joins in the pelvic ring
Lumbosacral zagapophyseal joints, anterior L/S joint (disc), coxal joint, SI joints, symphysis pubis
47
What is the total number of joints in the pelvic ring
8
48
Function of the movement of the SI joint is to convert the pelvis into a resilient accommodating receptacle that is essential to ease
Locomotion, weight bearing and shock absorption
49
Nutation means
To nod
50
What is nutation
Forward (anterior) movement of the sacral base with relationship to the ilium (SI joint), pelvis and lumbar vertebrae
51
What happens to the ilium in nutation
Comes together in posterior and widens in front
52
What is counter nutation
Sacral base moves posterior in relation to the ilium, pelvis and lumbar vertebrae
53
What happens to the ilium
Opens in the back and comes together in front
54
What is another type of movement of the ilium in regards to the sacrum
Rotator or figure 8
55
When does movement in the SI become a problem
When it sticks or becomes fixed or restricted this is known as subluxation
56
When does degeneration begins and mobility decreases of the SI joint
4th decade or 30’s
57
When does total fibrous degeneration occur and movement changes in the SI joint
8th decade or 70’s
58
Women appear to be more susceptible to SI joint problems than males because
Q angle or giving birth due to SI joints opening and closing