Bones & things
What type of joint is the SIJ posteriorly?
Plane synovial joint
What class of lever is the pelvis?
If there is sacral nutation, what happens at the lumbar spine and how is the pelvis tilted?
Lumbar flexion and posterior pelvic tilt
What does the prostate do?
It helps make some of the fluid that protects sperm cells.
What two bones form the SIJ (specific names)?
Sacrum & Ilium
In sacral nutation what does the sacrum do in terms of the base and the apex?
Base --> Anterior and inferior
Apex --> Posterior and superior
What is happening in sacral counter-nutation as the sacrum glides on the innominate? (Hint: Arms)
The short arm/vertical arm of the sacrum glides superior on short arm of innominate
The long arm/horizontal arm of the sacrum glides anterior on long arm of the innominate
Where is the prostate located?
Below and attached to the base of the bladder
What type of cartilage covers the sacrum? What type of cartilage covers the innominate bones?
Innominate --> Fibrocartilage
Sacrum --> Hyaline
In sacral counter-nutation how does the apex and base move?
Base --> Posterior & superior
Apex --> Anterior & inferior
What is happening in sacral nutation as the sacrum glides on the innominate? (Hint: Arms)
The short arm/vertical arm of the sacrum glides inferior on short arm of the innominate
The long arm/horizontal arm of sacrum glides posterior on long arm of the innominate
Skenes gland
What is the specific name of the surface of the articular surfaces of the SIJ?
Auricular surface (C-shaped)
In sacral counter-nutation...how does the impact the pelvic inlet and outlet?
Pelvic Inlet --> Diameter increases
Pelvic Outlet --> Diameter decreases
With posterior innominate rotation, how does the innominate bones glide on the sacrum? (Hint: Arms again)
Long arm/horizontal arm of iliac articular surface of innominate glides anterior
Short arm/vertical arm of iliac articular surface of innominate glides superior relative to sacrum
What is the erectile tissue name in the urogenital triangle?
Corpus cavernosa
Standing - Both femurs
Sitting - Ischial bones
In sacral nutation...how does the pelvic inlet and outlet change?
Pelvic inlet --> Decreases
Pelvic outlet --> Increases
With anterior innominate rotation, how does the innominate bones glide on the sacrum? (Hint: Arms again)
Long arm/horizontal arm of iliac articular surface of innominate glides posterior
Short arm/vertical arm of iliac articular surface of innominate glides inferior
What is the trick Bri taught about the arthrokinematics?
The gun