Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

Semester 2 FS Exam 5 > Pelvis > Flashcards

Pelvis Flashcards

1
Q

Osteology of Pelvis Structures

A

Osteoligamentous ring designed for stability

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

The bones of the pelvic girdle consist of

A 
2 innominate bones
Ilium
Ischium
Pubis
And the Sacrum dorsally
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

Pelvis articulates with

A

both the axial and appendicular skeleton

With 5th vertebrae and with 2 femurs at hip joint

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q 
5th lumbar vertebrae
Body
Height
Ingerior facet orientation
Transverse processes
Spinous process
A

Body - largest and heaviest
Height - great discrepency btw ant and post
Ingerior facet orientation - frontal plane
Transverse processes - shortest, project upward, posterolaterally
Spinous process - smallest

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

Sacrum
Ant =
POst =

A 
Anterior = concave
Posterior = convex
How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

Sacral Hiatus

A

Access to epidural space for caudal epidural blocks

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

L5-S1 Junction

A

High degree of variation and malformation (most common sacralization or lumbarization)

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

Sacrilzation

A

L5 is ossified with the sacrum

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

Lumbarization

A

Separation of sacrum at S1

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Any shear force in LS joint is resisted by

A

Superior articular process

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

Spondylolysis - what kind of foce

A

tensile

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

Innominate Bones

A

Divided in 3 parts into acetabulum
Anterior superior = ilium
Anterior Inferior = pubis
Posterior inferior = ischium

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

Complete ossification of innominate by

A

20-25 years

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Supracristal Plane

A

The transverse plane at the highest point of the iliac crests
Space btw L4 and L5
Used for assessing the height of the iliac crests
Can also be used for testing leg length discrepancy

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Leg length discrepency - 1 method

A

ASIS to medial malleolus

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

Gender Diff in Pelvis - Pubic arch angle

A

50-60 M

90 F

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
17
Q

Gender diff in pelvis - Pelvis height

A

Longer M

Shorter F

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
18
Q

Gender diff in pelvis - Sacrum

A

Longer/Narrower M

Shorter/Wider F

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
19
Q

Gender diff in pelvis - Sacral Base Length

A

> 1/3 body M

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
20
Q

Gender diff in pelvis - Acetabular Distance

A

Smaller M

Greater F

21
Q

Gender diff in pelvis - ASIS distance

A

Smaller M

Greater F

22
Q

Pelvic Inlet angle

A

50-60 degrees

23
Q

Pelvic Outlet angle

A

15 degrees

24
Q

Super-incumbent weight at sacrum

A

Head, Arms, and Trunk (HAT)

No matter sitting or standing, weight is at the SI joint

25
Q

Joints of osteoligamentous ring

A 
2 SI joints (immovable synovial)
Sacrum (modified vertebral column)
Pubic symphysis (secondary cartilaginous joint)
26
Q

SI Joint - Joint surfaces

A

Internal surface of the ilium - behind iliac fossa, auricular sacral surface

27
Q

SI Joint - Inner surface of ilium

A

2 parts - upper tuberosity, lower auricular surface

28
Q

SI Joint - Tuberosity

A

Rough, for fibers of interosseous sacroiliac ligament

29
Q

SI Joint - Auricular Suface

A

Broad synovial joints btw the sacrum and ilium

30
Q

SI joint auricular surfaces - Form and Force Closure

A

These surfaces have irrefular elevations and depressions, which result in a partial interlocking of the bones
THe strong articular capsule is attached close to the articulating surfaces of the sacrum and ilium

31
Q

Sacrum is

A

suspended btw iliac bones
held together by interosseous and posterior sarcoiliac ligamnets
Strongest ligaments in the body

32
Q

Ventral SI ligament

A

thin, wide sheet of transverse fibers anterior and inferior aspects of the SI joint
Replacement of most or all of these fibers by bone often begins after 50 years of age

33
Q

Dorsal SI ligament

A

Strong, short transverse and long vertical fibers joining the ilium and sacrum
The long fibers blend with the sacrotuberous ligament

34
Q

Interosseous Ligament

A

Massive, very strong ligament unites the iliac and sacral tuberosities
Consists of short, strong bundles of fibers that blend with and are supported by the thick firm posterior sacroiliac ligaments

35
Q

SI joint movement - SI joint is supported by a

A

ligamentous viscoelastic structure that was built to stretch small amounts
When you walk, short duration forces being placed across it by your foot hitting the ground and the bending of the spine cause it to stretch and store energy
This energy is released by swinging your leg forward
However - sitting causes some lengthening and stretching of the ligamentous structures

36
Q

SI joint motion

A

Symmetrical
Assymetrical
Lumbopelvic

37
Q

Symmetrical SI joint motion

A

Sacrum in relation to innominates (both)

Nutation and counternutation

38
Q

Asymmetrical SI joint motion

A

Motion of one innominate relative to the other
Sacral or pelvic torsion
Movement at the pubic symphysis - greater with pregnancy and delivery

39
Q

Lumbopelvic SI joint motion

A

Lumbar spine and sacrum with the innominates relative to the femurs (hip joint motion)

40
Q

Anterior Nutation

A

Sacral on Iliac

41
Q

Posterior Nutation

A

Ilium on Sacral

42
Q

Counter Nutation - Anterior

A

Ilium on Sacral

43
Q

Counter nutation - posterior

A

Sacral on ilium

44
Q

Nutation icnreases

A

the compression and shear forces at SI joint (stablity

45
Q

Full nutation of SI joint

A

in close packed position

46
Q

Pelvic Structure at SI joint

A

Sacrum is wider ant than post
Sacrum behaves as reverse keystone tending to sink into pelvis
POst ligaments become taut and draw iliac bones closer to each other then interlock the iliac bones with the sacrum

47
Q

Rotation tendencies of pelvis due to superincumban weight - Nutation

A

Sacrum - Forward rotation at S1

Resisted by interosseous, dorsal sacroiliac and iliolumbar ligaments

48
Q

Rotation tendencies of pelvis due to superincumbent weight - Lumbopelvic

A

Os-Coxae = backward rotation at hip

Resisted by sacrotuberous and sacrospinous ligaments

49
Q

Forces at SI joint during one leg stance

A

Wight, GRF, JRF, and muscle forces and ligaments will determine the 3D motion btw the bones of the SI joint
A lot of the forces in this joint and support of it experience a lot of tension on a consist basis

Semester 2 FS Exam 5 (2 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions