6305: Pelvic Girdle

Front 1

Provides support and protection to the abdominal organs.

Transmits forces from the head, arms, & trunk to the lower extremities.

Receives the ground forces generated when the foot contacts the ground & transmits them upward toward the vertebral column.

During walking, the pelvic girdle moves as a unit in all three planes.
It provides attachment for muscles & makes up the bony portion of the birth canal in females.

Back 1

pelvic girdle

Front 2

Bones of the Pelvic girdle

Back 2

Sacrum
Coccyx
Hip bones (ilium, ischium)
pubis

Front 3

Bones are joined around the -------& tied together at the symphysis to form a single unit

Back 3

sacrum

Front 4

All mvmt. Of the pelvic girdle occurs around this joint

Back 4

Lumbosacral

Front 5

Nonaxial synovial joint
Mvmt. = Extremely limited & is never voluntary

Back 5

Sacroiliac (SI joint) (2)

Front 6

Cartilaginous joint which joins the two pubes
Allows only slight movement (amphiarthroidal)

Back 6

pubic symphysis

Front 7

Relaxed standing posture the angle is about

Back 7

30 degrees

Front 8

What does this show?

Back 8

Forward tilt

Front 9

What does this show?

Back 9

Forward tilt

Front 10

Anterior tilt of the pelvis (i.e., iliac crest tilts forward; pubic symphysis tilts backwards. You may read some texts that talk about a posterior pelvic tilt, referring to the pubic symphysis.);
Hyperextension of the lumbosacral joint resulting in a downward & backward mvmt of the symphysis more than 30 degree tilt increased angle & lumbar lordosis

Back 10

forward tilt

Front 11

What type of tilt?

Back 11

backward

Front 12

Anterior tilt of the pelvis (i.e., iliac crest tilts forward; pubic symphysis tilts backwards. You may read some texts that talk about a posterior pelvic tilt, referring to the pubic symphysis.);
Hyperextension of the lumbosacral joint resulting in a downward & backward mvmt of the symphysis
less 30 degree tilt =increased angle & lumbar lordosis

Back 12

backward tilt

Front 13

What type of tilt?

Back 13

lateral tilt

Front 14

Lateral flexion of the lumbosacral joint resulting in the raising or lowering of one iliac crest
Hip hiking

Back 14

lateral tilt

Front 15

Movement to the right and left at the lumbosacral joint resulting in a pivoting motion of the hips around a vertical axis.

Back 15

rotation

Front 16

what motion?

Back 16

rotation

Movement to the right and left at the lumbosacral joint resulting in a pivoting motion of the hips around a vertical axis.

Front 17

The first ---------degrees of spine flexion occurs in the lumbar area

Back 17

50 to 60

Front 18

What pathology is show in the photo?

Back 18

stenosis= narrowing of spinal canal

Front 19

The first----------of spine flexion occurs in the lumbar area

Back 19

The first 50 to 60 degrees of spine flexion occurs in the lumbar area

Front 20

Additional ---------is accomplished through the forward tilting of the pelvis and weight of the upper body

Back 20

Additional flexion is accomplished through the forward tilting of the pelvis and weight of the upper body

Front 21

For the loads on the spine to be minimized during lifting, the distance between the trunk & the object lifted should be as ------------as possible

Back 21

short

Front 22

When a vertebra is subjected to compressive load that exceeds its failure point, the end-plate or the ---------- fractures before the disc is damaged

Back 22

vertebral body

Front 23

In what region?

Relaxed upright standing, the compressive load =2x the weight of the superimposed body
e.g. holding 20 lbs. = compressive load of 40 lbs.

Back 23

Lumbar Region

Front 24

Unsupported sitting--->------loads than standing.

Minimal load ---> ------position.

Externally applied loads produced by lifting or carrying--->very high loads on the ------spine.

Intrabdominal pressure may help to support the spine & thus reduce the load.

Back 24

Unsupported sitting--->higher loads than standing.

Minimal load ---> supine position.

Externally applied loads produced by lifting or carrying--->ery high loads on the lumbar spine.

Intrabdominal pressure may help to support the spine & thus reduce the load.

Front 25

ROM decreases up to ---% with old age

Back 25

ROM decreases up to 50% with old age

Front 26

Men have greater mobility in -------

Back 26

flexion-extension.

Front 27

Women are more mobile in --------

Back 27

Women are more mobile in lateral flexion.

Front 28

The ligaments and discs provide the intrinsic stability of the spine.
Most have a high ---------content which limits their extensibility during spine motion.

Back 28

The ligaments and discs provide the intrinsic stability of the spine.
Most have a high collagen content which limits their extensibility during spine motion.

Front 29

The amount of strain on the various ligaments differ with the spinal type of motion.

Flexion - Increases strain on ------------ligament
Extension - increases strain on -------- ligament

Lateral flexion - increases strain on --------------ligaments

Rotation - increases strain on ---------ligament

Back 29

he amount of strain on the various ligaments differ with the spinal type of motion.

Flexion - Increases strain on interspinous ligament

Extension - increases strain on anterior longitudinal ligament

Lateral flexion - increases strain on contralateral transverse ligaments

Rotation - increases strain on capsular ligaments

Front 30

Agonistic muscles -----------and carry out motion & antagonistic muscles ---------it.

Back 30

Agonistic muscles initiate and carry out motion & antagonistic muscles control and modify it.

Front 31

The orientation of the --------determines the type of motion possible at any level of the spine.

Back 31

The orientation of the facets determines the type of motion possible at any level of the spine.

Front 32

The facets may also sustain compressive loads, particularly during ----------

Back 32

The facets may also sustain compressive loads, particularly during hyperextension.

Front 33

The primary function of the facets is to ------ the motion of the moving segment.

Back 33

The primary function of the facets is to guide the motion of the moving segment.

Front 34

A joint is where two or more bones are joined. Joints allow motion (articulation). The joints in the spine are commonly called Facet Joints. Other names for these joints are ---------------

Back 34

A joint is where two or more bones are joined. Joints allow motion (articulation). The joints in the spine are commonly called Facet Joints. Other names for these joints are Zygapophyseal or Apophyseal Joints.

Front 35

Loads on the spine are produced primarily by

Back 35

Body weight,
Muscle activity,
Pre-stress exerted by the ligaments, &
Externally applied loads.

Front 36

It is multi-axial

Back 36

hip

Front 37

Illiopsoas - located deep in the abdominal cavity
Tensor Fascia Latea & Erectus Femoris are assistive muscles
Erectus Femoris is not a strong flexor
Illiospsoas is made up of 2 muscles
Illiacus – coming off of the Illium
Psoas - comes from anterior part of vertebrae

Back 37

hip flexion

Front 38

In the standing position, contracted -------muscles (which ride over the pubic crests) move the pubis backward; the ----------muscles move the pubis forward. (antagonists)

Back 38

In the standing position, contracted psoas muscles (which ride over the pubic crests) move the pubis backward; the abdominal muscles move the pubis forward. (antagonists)

Front 39

In walking, the ---------muscles of one side initiate movement of that leg forward, while the --------bring the same-side hip and pubis forward. (synergists)

Back 39

In walking, the ilio-psoas muscles of one side initiate movement of that leg forward, while the abdominals bring the same-side hip and pubis forward. (synergists)