Innominate Flashcards
(75 cards)
The result of what 2 forces keep the pubic symphysis together?
Strong posterior ligaments
Articulation at SI joint
What are the 2 major significant pelvic structures influencing lower extremity circulation and drainage?
Pelvic diaphragm
Inguinal area
The ______ is the area of the pelvis composed of bone from 3 different ossification centers
Acetabulum
Anterior pelvic landmarks
Iliac crest ASIS AIIS Ischial tuberosity Pubic symphysis
Posterior pelvic landmarks
PSIS
PIIS
Inferior lateral angle (ILA)
Major joints of the pelvis
SI joint
Acetabulum
Pubic symphysis
What is the difference between true ligaments and accessory ligaments?
True ligaments go from bone to bone
Accessory ligaments attach at another ligament, a tendon, or other fascia
Major functions of ligaments
Limit abnormal or excessive movements at a joint
Permit normal motion
Quality is slightly elastic
Prevent excessive movement as part of reflex response
Major anterior pelvic ligaments
Sacrospinous ligament
Iliolumbar ligament
Anterior sacroiliac ligament
Inguinal ligament
Major posterior pelvic ligaments
Sacrotuberous ligament
Posterior sacroiliac ligament
Which ligament connects the ASIS to the superior pubic rami?
Inguinal ligament
Which ligament goes from ilia to L5?
Iliolumbar
Which ligaments cover much of the sacroiliac joints?
Anterior and posterior sacroiliac ligaments
Which ligament goes from sacrum to spine of ischium?
Sacrospinous ligament
Which ligament goes from sacrum to ischial tuberosity?
Sacrotuberous
The sacrospinous ligament goes from the ischial spine to lateral margins of sacrum where it blends with the ______ ligament. It forms part of the origin from which the _____ muscle arises
Sacrotuberous; coccygeus
The sacrotuberous ligament runs from lower sacral tubercles to the ischial tuberosity and acts as an attachment for the _____ ____ m. as well as the tendon of the ____ ______. It connects with the fascia of the pelvis.
Gluteus maximus
Biceps femoris
Primary functions of iliolumbar ligament
Stabilizes anterior motion of lower lumbar spine
Restricts anterior and rotary motion of L5
The iliolumbar ligament blends with the upper part of what ligament?
Anterior SI ligament
The inguinal ligament gives origin to what 2 muscles?
Internal oblique m
Transversus abdominis m
Which thick pelvic ligament prevents the sacrum from “popping” out anteriorly?
Anterior SI ligament
The posterior SI ligament blends with the ________ligament and ______ fascia
Sacrotuberous; thoracolumbar
What pelvic ligament forms the major bond between the pelvic bones, filling the irregular space posterosuperior to the joint and is covered posteriorly by the posterior SI ligament?
Interosseous sacroiliac ligament
The pubic symphysis lies anteriorly between adjacent surfaces of pubic bones. Each joint surface is covered by _____ cartilage and is linked across midline to adjacent surfaces by _______.
The joint is surrounded by interwoven layers of _____ fibers
Hyaline; fibrocartilage
Collagen
