10. Pelvis and Gluteal Region Flashcards

1
Q

Identify the following lower limb regions.

A

Blue: Anterior Thigh

Yellow: Medial Thigh

Green: Knee/Popliteal Fossa

Orange: Leg

Pink: Foot (dorsal and plantar)

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2
Q

What are the bones of the pelvis?

A

Hip bone, sacrum, coccyx

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3
Q

What do the bones of the pelvis form?

A

the pelvic inlet=pelvic brim (hip bone, sacrum, coccyx)

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4
Q

Identify the following parts of the pelvis and hip.

A

Blue: Hip bone

Green: Sacrum

Orange: Coccyx

Purple: Femur

anterior view circle: pelvic intlet

posterior view circle: pelvic outlet

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5
Q

What does the false pelvis hold?

A

False pelvis is above the inlet (true pelvis is in between inlet and outlet)

False pelvis holds the intestines.

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6
Q

What articulation is found when the two parts of the hip bones meet anteriorly?

A

Pubic symphysis

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7
Q

What are the three parts of the hip bones. Identify them.

A

Red: ischium

blue: pubis (thinner, smaller aspect)
rest: ilium

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8
Q

Identify all parts of the illium of the hip bone on the posterior aspect.

A
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9
Q

Identify all parts of the illium of the hip bone on the posterior aspect.

A
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10
Q

What does the acetbulum hold?

A

the acetabulum holds the head of the femur

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11
Q

What articulates with the auricular surface?

A

the auricular surface is where the sacrum articulates with the ilium

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12
Q

What does the arcuate line become?

A

The arcuate line becomes the pectineal line

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13
Q

Identify the various part of the ischium of the hip bone.

A
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14
Q

Identify all the parts of the pubis of the hip bone. (of the anterior view only)

A

the orange part that represents the hole is the obturator foramen

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15
Q

Identify all the posterior parts of the pubis of the hip bone.

A
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16
Q

What inserts onto our pubic tubercle?

A

rectus abdominis and inguinal ligaments

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17
Q

When is the pelvis properly aligned?

A

When the ASIS (anterior superior iliac spine) is lined up with the pubis tubercle (you have anterior and posterior tilt that allows you to bear weight on your femur)

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18
Q

What is the ischiopubis ramus formed of?

A

the ramus of the ischium and the inferior pubis ramus

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19
Q

What does the arrow point at?

A

sacral promontory

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20
Q

What are the four joints found in the pelvis?

A

lumbosacral joint

sacroiliac joint

sacrococcygeal joint

pubic symphisis

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21
Q

What joint is this? Which ligaments reinforce this joint?

A

JOINT: lumbosacral joint

Blue: anterior longitudinal ligament

green: iliolumbar ligament

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22
Q

What joint is this? Which ligaments reinforce this joint?

A

JOINT: sacroiliac joint (sacrum and ilium meet at the auricular surface)

orange: anterior sacroiliac ligament
purple: posterior sacroiliac ligament
pink: interosseus sacroiliac ligament (between 2 bones)

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23
Q

Identify the structure in pink and green.

A

pink: inguinal ligament (goes from ASIS to pubis tubercle): it is the tendon extension of the external oblique
green: obturator membrane

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24
Q

Identify the orange and purple ligaments. Where do they insert?

A

purple: sacrotuberous ligament (inserts onto ischial tuberosity)
orange: sacrospinous ligament (inserts onto ischial spine)

25
What is the function of the sacrospinous ligament?
the sacrospinous ligament stops hinge of the pelvic and spine: maintains posture
26
Why are individuals more prone to shoulder dislocation rather than hip dislocation?
because your hip has the acetabulum that is uniquely for your femur to insert into. the acetabulum is deeper and there are mor ligaments attaching your femur to your hipbone
27
Identify the two parts of the actebulum.
blue: articular surface green: acetabular fossa
28
Identify the various parts of the proximal femur.
29
What trick can you use to identify wether it is the right or left femur?
the tuberosity (rough line) is POSTERIOR femur gun: if you hold the heand of your femur with your left hand and cal easily reach your lesser trochanter then it is your left femur (same with right hand)
30
What are the two sex differences of the angle found between your hip joint and proximal femur?
1. Q ANGLE: (in blue) angle between your femur and knee - women \> men - women's hip articulate more laterally - Y shape - women have a wider pelvis =\> require higher Q angle to hold body weight over center of mass 2. ANGLE OF INCLINATION: (in red) angle between head of femur and body of femur - men \> female
31
What is lateral minescus? Who is more prone to lateral minescus?
femur sits inside knee, all of weight is put onto lateral aspect of the tibia which puts pressure on ligaments of the knee (females are more prone)
32
Identify the five ligaments found in this area. (attaches femur to hip)
1. green: iliofemoral ligament 2. purple: ischiofemoral ligament 3. orange: pubofemoral ligament (small one) DEEPER 4. Synovial membrane 5. ligament of head of femur
33
Describe the superficial ligaments between your femur and hip? Why are they formed that way?
3 superficial ligaments: ilifemoral, ischiofemoral and pubofemoral ligaments they are twister: in embryo: the ligaments are straight but as fetus grow, they twist =\> it limits posterior extension of thigh but helps with flexion of thigh
34
Why can you flex your thigh more than extend?
due to the twisting of the three superficial ligaments between hip and femur (iliofemoral, ischiofemoral, pubofemoral)
35
What are the two types of hip dislocation? What action causes them?
1. posterior hip dislocation: femur goes back due to internal rotation or flexion 2. anterior hip dislocation: femur goes forward due to flexion or lateral rotation
36
What are the differences in the physical appearance of the hip and pelvis between male and female?
37
Who is the cutest person in town?
Little tomato
38
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39
What is the function of fascia latae in the thigh? What does it become in the leg? Along with the fascia latae, what else do we find in the thigh and leg?
The fascia latae in the thigh becomes the crural fascia in the leg. Both fascia prevent blood from pooling into the legs (maintains blood circulation) We find the IT band (ilitibial band)=thickening of fascia on the medial aspect of the thigh and leg (connected to fascia)
40
What is compartment syndrom? What is the solution?
Compartment syndrom is the swelling in 1 compartment of your thigh/leg which puts pressure on VAN: to release pressure, cut the fascia latae
41
Identify this muscle. (insertion, origin, innervation, action)
GLUTEUS MAXIMUS: **ori:** posterior sacroiliac ligament & sacrotuberous ligament **ins**: gluteal tuberosity & iliotibial tract **inn:** inferior gluteal n **action**: extension @ hip & abduction
42
Identify the muscle indicated with the green arrow. (insertion, origin, innervation, action)
Green: TENSOR FASCIA LATAE **ori:** ASIS (anterior superior iliac spine) **ins:** from the iliotibial tract down to lateral tibial condyle **inn:** superior gluteal n **action:** abduction & tense fascia to keep you upright & flexion @ hip
43
Identify the muscle: (insertion, origin, innervation, action)
GLUTEUS MEDIUS (deep to glute max) ori: ilium (between ant & post gluteal line) ins: greater trochanter inn: superior gluteal n act: abduction (when you stand on 1 leg, its the muscle that prevents you falling)
44
Identify the muscle: (insertion, origin, innervation, action) (green)
GLUTEUS MINIMIS (deep to glute med) ori: ilium (between ant&post lines) ins: greater trochanter inn: superior gluteal n act: internal rotation & bit of abduction
45
Name the 6 lateral hip rotators. Name the common action they contribute to.
priformis gemellus superior obturator internus gemellus inferior quadratud femoris obturator externus ACTION: lateral rotation of hip, bring back to extension when flexing
46
Which ligaments are harmed in a posterior and anterior hip dislocation?
post: ischiofemoral lig damage ant: iliofemoral lig damage
47
identify these 2 muscles: (insertion, origin, innervation, action)
blue: PIRIFORMIS ori: anterior sacrum (goes thru greater sciatic foramen) ins: greater trochanter inn: n to piriformis act: lateral hip rotators OBTURATOR INTERNUS ori: ischiopubis ramus & obturator membrane ins: greater trochanter (goes thru lesser sciatic foramen) inn: n to obturator internus act: lateral hip rotators
48
Identify the orange and yellow muscle: (insertion, origin, innervation, action)
OREO TRICK: gemellus superior (dark), obturator internus (light), gemellus inferior (dark) \*both gemellus are innervate by muscles below it orange: GEMELLUS SUPERIOR ori: ischial spine ins: tendon of obturator internus inv: n to obturator internus act: lateral hip rotators yellow: GEMELLUS INFERIOR ori: ischial tuberosity ins: tendon of obturator internus inv: n to quadratus femoris act: lateral hip rotators
49
Identify this muscle: ## Footnote ori: ins: inv: act:
QUADRATUS FEMORIS ori: ischial tuberosity ins: intertrochanteris crest inv: n to quadratus femoris act: lateral hip flexor
50
identify this muscle: ## Footnote ori: ins: inv: act:
OBTURATOR EXTERNUS | (very deep) ## Footnote ori: ischiopubis ramus ins: intertrochanteric crest inv: obturator n act: lateral hip rotators
51
Explain the blood flow in the hip and upper thigh (arteries).
52
What is the cremaster test?
light stroking of up thigh on cremaster region activates the femoral nerve (L1-L2 branch of genitofemoral n) which pulls the testes up torwards the body
53
What are the motor and sensory functions of the lumbar plexus?
Lumbar plexus motor: abdominal wall, anterior thigh (femoral n), medial thigh (obturator n) sensory: abdominal wall, anterior lateral thigh, medial thigh, anterior leg, medial , medial foot
54
What are the motor and sensory functions of the sacral plexus?
sacral plexus motor: gluteal region, posterior thigh, leg, foot sensory: buttocks, posterior thigh, posterior leg, most of foot
55
Draw the Lumbar Plexus.
56
Draw the sacral plexus.
57
Describe the dermatomes
58
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