Pelvic Girdle Flashcards
Functions of the Pelvic Girdle
- attaches lower limbs to the spine
- supports visceral organs of the pelvis
- where full weight of upper body passes through
Which extremity has less freedom of motion but are more stable than the other
Lower Extremities
due to the strong ligaments that attach them to the axial
Pelvic Girdle consists of
- 2 Pelvic/Hip Bones
- Sacrum
Pelvis is a basin-like structure formed by the –
- Hip Bones
- Sacrum
- Coccyx
Hipbone is made up of the
- Ilium
- Ischium
- Pubis
Hip Bones are separated into 3 during __
* Area of separation
* Reason for separation
Childhood
* Acetabelum
* chuchu ligaments are not fused yet
Junction of the 3 bones of the hip
* Receives the __ to form the hip joint
Acetabelum
* Receives the Femoral Head to form the Hip Joint
Large, flared bone that forms the superior region of the hip bone
Ilium
Thickened superior margin of ala
Iliac Crest
Thickest part of the Iliac Crest
Iliac Tubercle
Anterior End of the Iliac Crest
* Projection inferior to this
ASIS: Anterior Superior Iliac Spine
* AIIS: Anterior Inferior Iliac Spine
Posterior End of the Iliac Crest
* Projection inferior to this
PSIS: Posterior Superior Iliac Spine
* PIIS: Posterior Inferior Iliac Spine
Structure just inferior to the PIIS in the Ilium where the Ileum is indented
* What nerve passes through here
Greater Sciatic Notch
* Sciatic Nerve
Sciatic n goes to the posterior thigh
Attachment sites of gluteal muscles
Gluteal Lines: Anterior, Posterior, Inferior
Concavity of the internal surface of the ala anteriorly
Iliac Fossa
Posterior to the Iliac Fossa
* Articulates with ___ to form which joint
Auricular Surface
* Articulates with the Sacrum to form the Sacroiliac Joint
Runs anteroinferiorly from the auricular surface
* it defines –
Arcuate Line
* Defines the superior limit of the true pelvis
Part of the Pelvis that joins the Ilium posteriorly and forms the posteroinferior region of the hip bone
Ischium
has a thicker body
Thinner part that joins the pubis anteriorly
Ramus
Structure that lies posterior to the acetabellum projecting medially
* Attachment point for
Ischial Spine
* Sacrospinous Ligament
Inferior to the ischial spine where the nerves and vessels of the perineum pass through
Lesser Sciatic Notch
Rough, thickened part of the ischial body and the strongest part of the hip bone
* Function
* Attachment site for –
Ischial Tuberosity
* Bears weight during sitting
* Sacrotuberous Ligament and Hamstring Muscles
Sacrospinous Ligament attaches __ to __
Sacrum to the Ischial Spine
Sacrotuberous ligament attaches from __ to __
Sacrum to the Ischial Tuberosity
V shaped bone that forms the anterior margin of the hip and where the bladder rests on
Pubis
Ramus of the Pubis that joins with the bbodies of IIschium and Ilium
Superior Ramus
Ramus that joins with the Ischial Ramus
Inferior
Thickened anterior border of the body
Pubic Crest
Knob-like part at the lateral end of the Pubic Crest
* Attachment site for which ligament
Pubic Tubercle
* Inguinal Ligament
Thin ridge along the superior ramus of the pubis
* it forms the anterior portion of the __
Pectineal Line
* Pelvic Brim
Foramen between the pubis and the ischium closed by the obturator membrane
Obturator Foramen
Inverted V arch formed by the Inferior Pubic Rami and Ischial Rami
Pubic Arch
Pubic Arch is formed by __
Inferior Pubic Rami and Ischial Rami
The joint between 2 Pubis is joined by the bodies of the 2 pubic bone
Pubic Symphysis
Pelvis that lies **inferior ** to the pelvic brim that contains pelvic organs - female reproductive
True (Lesser) Pelvis
Pelvis superior to the Pelvic Brim
* Bounded by –
* Part of __ and contains __
False (Greater) Pelvis
* Bounded by the alae of Ilium
* Part of the Abdomen and contains abdominal organs
Delineated by the pelvic brim
* Where is its largest diameter
Pelvic Inlet
* Largest diameter is side to side in the frontal plane
Inferior margin of the true pelvis
* Largest diameter is __
Pelvic Outlet
* Anteroposterior Diameter
The Pelvic Outlet is bounded by the ff:
* Anterior:
* Lateral
* Posterior
- Anterior: Pubic Arch
- Lateral: Ischial Tuberosities
- Posterior: Sacrum Coccyx
In females, the true pelvis defines the __
* Its cavity is __
Birth Canal
* Its cavity is broad, shallow, larger
Bones of the females are __ compared to males
Lighter, thinner and smoother
the Acetabula in females are __ compared to males
Smaller and farther apart
The pubic arch in females are __
Broader and more rounded
Male or Female
Wider, shorter sacrum with accentuated sacral cirvature
Females
Male or Female
More movable and straighter coccyx
Female
Male or Female
Narrow, Longer sacrum with Sacral Promontory more ventral
Male
Male or Female
Greater sciatic Notch narrow and deep
Males
Male or Female
Pelvic Inlet (brim) heart shaped and narrow
Male
Male or Female
Pelvic Outlet wider; Ischial Spines shorter, farther apart and everted
Female
Male or Female
Narrow ischial spines that is longer, sharper, and point more medially
Male
