exam 1: pelvic mm and joint 2 Flashcards
What are the 2 functions of the Sacroiliac joint
Transmit the weight of the trunk to the pelvic limbs when standing
Drive the force of the limbs to the trunk in progression
About how much weight of the body does the thoracic limb handle
~40%
About how much weight of the body does the pelvic limb handle
~60%
**gives power for body to move forward
what 2 types of joints make up the Sacroiliac joint
Cartilaginous joint (semi-mobile)- bones are united by cartilage
Synovial join (mobile)- a fluid filled cavity intervenes between the bones
what is the blue arrow pointing to
Cartilaginous synchondroses(rough)
what is the green arrow pointing to
Synovial plane (smooth)
Is the sacroiliac joint strong? Flexible?
Very strong
small amount of flexibility
what is the blue arrow pointing to
Dorsal & ventral sacroiliac ligament
what is wrong with this image (3)
- sacroiliac luxation
- Fracture of pubis
- fracture of ischium
what are the blue arrows pointing to
Sacrotuberous ligaments
what action does red represent?Blue?
red: flexion
blue: extension
How do you name this movement of the left coxal/hip joint?
extension
What category of synovial joint does the coxae joint classify as
The ball-and-socket or spheroidal
joint
Coxae joint:
Spheroidal joint formed between the ____________ of the acetabulum and the ______ of the femur
lunate surface
head
what is the red arrow pointing to
Ligament of the head of the femur
(acetabular fossa – fovea of the femoral head)
what is the blue arrow pointing to
Transverse acetabular ligament
What is the red arrow pointing to
Ligament of the head of the femur (very short)
Is intracapsular but not intraraticular
what is green on this diagram
Synovial membrane of hip joint
what is the brown outer layer representing
Capsule of hip joint
What is this image showing
Dysplastic and Dysplasia/arthritis in the Coxal Joint
Why does the body form arthritis when the coxal joint is dysplastic
body’s way to try and stop joint from moving so freely
what is the red arrow pointing to (what is this signs of)?
Severe signs of osteoarthritis or arthrosis
Muscles Acting Primarily on the Hip Joint (4)
gluteal group
deep group
caudal group
Medial group
Muscles Acting Primarily on the Stifle Joint
extensor group
flexor group
Muscles Acting Primarily on the Tarsal and Digital Joints
Craniolateral group: flexor of tarsal joint & extensors of the digits
Caudal group: extensors of tarsal joint & flexor of the digits
what muscle is this
Tensor fascia lata
what muscle is this
Superficial gluteal m.
what muscle is this
Superficial gluteal m.
what muscle is this
Middle gluteal m.
what muscle is this
Middle gluteal m.
what muscle is this
Piriformis m
what muscle is this
Deep gluteal m.
what muscle is the black star on
Deep gluteal m.
what muscle is this
External obturator m.
what muscle is this
Internal obturator m.
what muscle is this
Gemelli mm. (twins=2 heads)
what muscle is this
Quadratus femoris m.
what joint is being pointed to
Genual joint (Stifle)
What types of synovial joints make up the Genual joint (Stifle)
Femoropatellar (hinge)
Femorotibial (condylar)
Proximal tibiofibular (plane)
what is circled in green
Femoropatellar (hinge)
**flex and extend
what is circled in red
Femorotibial (condylar)
involved condyles
what is circled in blue?
List from top to bottom
top:Femur – sesamoids of
gastrocnemius m. (fabellae)& Tibia – sesamoid of
popliteus m
bottom:Proximal tibiofibular (plane)
what is the largest synovial joint in the body
stifle joint
what are the Four main ligaments of the stifle joint
Lateral collateral lig.
Medial collateral lig.
Cranial cruciate lig.
Caudal cruciate lig
Stifle:
what is red pointing to
Lateral collateral lig
Stifle:
what is blue pointing to
Joint capsule
Includes:
Femorotibial
Femoropatellar
Proximal tibiofibular
Sesamoid joints
Cranial view of Femoropatellar joint:
what is blue pointing to
Lateral & medial femoropatellar ligg.
Attach the patella with the lateral and medial fabellae
Cranial view of Femoropatellar joint:
what is the blue arrow pointing to?
orange?
blue: Patellar ligament
orange: tibial tuberosity
what are the red arrows pointing
Patellar fibrocartilages (helps prevent patellar luxation)
what is the single red arrow pointing to
Infrapatellar body fat.
Fatty body located between the patellar lig and the joint capsule (cushion)
what is covering the patella and trochlea of the femur
hyaline cartilage (help with friction)
what is blue pointing to
Cranial cruciate lig.
Prevents:
-cranial displacement
of the tibia against the femur
-hyperextension of the genual joint
-medial rotation of the joint
what is red pointing to? What does this do?
Caudal cruciate lig.
Prevents:
-caudal displacement of the tibia against the femur
-lateral rotation of the joint
what is the yellowish structure
Parapatellar
fibrocartilage
what is the blue arrow pointing to
Infrapatellar
body fat
Is this the cranial or caudal cruciate ligament
Cranial cruciate lig.
(twisted like a rope; helps make it stronger)
Is this the cranial or caudal cruciate ligament
caudal cruciate ligament
what is red pointing to? blue?
red: lateral meniscus
Blue: medial meniscus
What is 1
Cranial tibial ligg. of menisc
what is 2
Transverse lig.
what is 3
Caudal tibial lig. of medial meniscus
what are the red arrows pointing to
Lateral collateral & Medial collateral Ligament
what is the left blue arrow pointing to? right blue arrow?
left: Lateral meniscus
right: Meniscofemoral lig.
What is the green structure representing
Stifle joint capsule
