Syndesmology Flashcards
Joints
Articulate the bones together
Unite the bones firmly and allows movement
What are the 2 types of joints?
Conventional
Unconventional (synsarcosis)
Conventional Joints include
Fibrous joints
Cartilaginous
Synovial
Synsarcosis
The only type of unconventional joint
Articulation through muscles
Located at the girdle muscles (pelvic and pectoral girdles)
Fibrous Joint
No joint space (not highly moving)
Bones united through dense CT
EX: Sutures (skull), gomphosis (tooth bony socket), syndesmoses bones
Syndesomoses
Fibrous Joint
Syndesmoses bones joined through CT ligament
Distal articulation between the radius and the ulna
Cartilaginous Joint/ Synchondroses
Conventional joint
No joint space
Bones united through cartilage
Which bodies of vertebrae aren’t classified as synchondroses joints?
Atlas and axial
Examples of cartilaginous joints
- Diaphysis/ epiphysis
- bodies of vertebrae
- pelvic symphysis
Synovial Joints
Conventional Joints
Highly mobile
Joint cavity and articulate cartilage between bones
Outer layer: collateral ligaments
Which joints give vets the most problems?
Synovial Joints
Examples of synovial joints
- Pivot (atlantoaxial, proximal radioulnar)
- condylar (femorotibial)
- hinge (elbow)
- Ellipsoidal (radiocarpal)
- Saddle (interphalangeal)
6.spheroidal (hip,shoulder)
Where are bone injections given?
Joint Cavity
But can also be used for synovial synthesis
Joint Cavity
Made up of:
Articular cartilage (smooth cartilage that allows gliding of bones)
Synovial membrane (middle between bones)
Joint Capsule
Made up of articular cartilage, fibrous capsule, ligaments, and the synovial membrane
Synovial membrane
Contain synovial secretion cells that secrete synovial fluid, making it a lubricant, and facilitating a smooth joint movement
Order of joints in the Thoracic limb
Syncarcosis, shoulder, elbow, carpal, digit
Shoulder Joint
Synovial/ spherical joint
links the scapular glenoid cavity to the humerus head
Range of motion: rotation, abduction, adduction, circumduction
______ acts as collateral ligaments and add support the shoulder joint.
Tendons
What is another word for dislocation?
Luxation
Subluxation
Partial dislocation
Why are shoulder joint dislocations rare?
Because it’s well protected with good support unless there is a severe trauma
What are the two ways to protect tendons?
- Tendon sheath
- Sesamoid bone