Pelvic Flashcards by Fell into the rabbithole

● Painful coccyx

“coccydynia” or
“coccygodynia”

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Prolonged sitting
causes?

bursitis;
Tailor’s/weaver’s/
boatman’s bottom

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Iliac crest (L) = (R)
○ XXX: ?

Pelvic obliquity/list

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ASIS < PSIS

APT

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What are the Red carpet muscles

Piriformis, obturator
internus, obturator
externus, superior
gemellus, inferior
gemellus ,
quadratus femoris

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Borders:(Pelvic Outlet)
○ Ant:
○ Post:
○ Lat:

○ Ant: Pubic arch
○ Post: Coccyx
○ Lat: Ischial tuberosity

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● (L4)
● highest point of the
pelvis

Iliac crest

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● Restricts AB,
Extension

Pubofemoral ligament

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a. Lumbar and sacral nerves
b. Blood Vessels

Obturator foramen

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Female:

Oval, larger

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(Origin of rectus femoris
straight head)

AIIS

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Femoral Torsion Normal ANgle

8-15 degrees

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Origin of:
a. Adductor Magnus
b. Gracilis
c. Adductor Brevis

Inferior Ramus

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Increased neck shaft angle =

Coxa valga

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● S2
● Dimples of Venus

PSIS

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connects ilium, ischium,
pubis

Triradiate ligament

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● Restricts extension
● Weakest

Ischiofemoral ligament

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Child Neck Shaft Angle=

160 degrees

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ASIS = PSIS
○ XXX: ?

Pelvic tilt

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2 Innominate bones (R)
and (L)
* Ilium
* Ischium
* Pubis

Pelvis

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Pelvic Girdle
* (Posterior) Right
and left pelvic
bones ↔ _________
* (Anterior) Left and
right hemipelvis ↔
____________

sacrum and fifth lumbar

pubis symphysis

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Multiaxial
ball-and-socket joint
that has maximum
stability because of the
deep insertion of the
head of the femur into
the acetabulum

Acetabulofemoral Joint/Hip Joint

PSIS is the measurement landmark of what?

Schober’s Test

Fracture of the iliac
wing

Duverney Fracture

● Femoral head ↔ Acetabulum ● Very stable structurally + Very mobile ● Hip abductor muscles on the weight-bearing leg must create a force to counterbalance about 85% of body’s weight during each step taken.

Hip Joint

Pubic tubercle = Greater trochanter ○ XXX: ?

True LLD, coxa vara, dislocation

Decreased Femoral Torsion (Out-toe)

Retroversion

Decreased Neck Shaft Angle =

Coxa Vara

● “crotch” ● Common site of adductor origin

Pubis

MC direction of Hip D/L: posterior ● MOI: dashboard injury, FAddIR + PCL injury

Hip Dislocation

Increased Femoral Torsion (in-toe)

Anteversion

Normal Center Edge Angle

20-30 degrees

“wing/ear” ● Largest, superior

Ilium

● 25% of the general height

Femur

● “sit bone” ● For weight bearing in sitting ● Origin of hamstrings

Ischial tuberosity

ASIS > PSIS

PPT

Iliopsoas

Lesser Trochanter

origin of pectineus

Superior Ramus

Carries abdominal organs

Pelvis Inlet (Pelvic Brim)

Adult Neck Shaft Angle=

125 degrees

● Covered by hyaline and fibrous cartilage ● Orientation: (SAM) Superior, Anterior and Medial ● Blood supply ○ 20% obturator artery ○ 80% Medial circumflex artery

Femoral Head

origin of adductor longus

Pubic Tubercle/ Body

● “Angle of Wiberg”

Center Edge Angle

● Aka Y ligament of bigelow ● Strongest ligament of the body ● Restricts: Extension, ER small amount AD

Iliofemoral ligament

● (Origin of Sartorius, Inguinal Ligament/ poupart’s/ aponeurosis of external oblique) ● Measurement landmark of: ○ LLD, Q-angle ○ Fulcrum for hip abduction, adduction

ASIS

● Latin word, “bowl”/”basin” ● A bridge between the lower extremities and the entire head, arm, and trunk complex (HAT).

Pelvis

Borders: (Pelvic Inlet) ○ Ant: ○ Post: ○ Lat:

○ Ant: Symphysis pubis ○ Post: Sacral promontory ○ Lat: Iliopectineal line

Boundaries of Femoral Triangle: ● SUPERIOR: ● MEDIAL: ● LATERAL:

● SUPERIOR: inguinal ligament (forms the base the femoral triangle) ● MEDIAL: adductor longus ● LATERAL: sartorius

Male:

Heart, smaller

● “fish” ● Posterior ● Ischial tuberosity ● Ischiogluteal bursa

Ischium

● “tail bone”

Coccyx

Iliac tubercle

(L5)

● Carries reproductive organs

Pelvis Outlet