MSK Flashcards
(22 cards)
What are the subtypes of fibrous joints?
Sutures
Gomphmoses
Syndesmoses
Define a joint
Defined point at which 2 or more bones make contact (articulate)
Classified by tissue type present
What are sutures
Synarthrosis
Between bones of skull
(Limited movement till age of 20)
What is Gomphmoses
Synarthrosis
Teeth articulate with socket via
Periodontal ligament (fibrous connection)
What is syndesmosis
Amphiarthrosis
Held by interosseus membrane
E.g. Middle radio-ulnar joint, middle tibiofibular joint
What are the subtypes of cartilaginous joints?
Synchondroses
Symphysis
What is a fibrous joint
Bones bound by fibrous tissue
What is a cartilaginous joint?
Bones attached by fibrocartilage or hyaline cartilage
What is a synchondrosis?
Only involves hyaline cartilage
Syn or amphiarthrosis
E.g. Between diaphysis and epiphysis of growing long bone
What is a symphysis?
Fibro or hyaline cartilage
Amphiarthrosis
E.g. Pubic symphysis
What is a synovial joint?
Joint filled with synovial fluid Fully moveable (diarthroses)
What is diarthroses?
Fully moveable joint
What is Synarthrosis ?
Immoveable joint
What is amphiarthrosis?
Slightly moveable joint
What are the types of synovial joints?
Hinge Saddle Plane Pivot Condyloid Ball and socket
Example of hinge joint
Elbow joint
Permits Flexion and extension
Example of a a saddle joint
Metatarsophalangeal joint
Concave and convex joint surfaces
Example of plane synovial joint
Acromioclavicular joint
Permits gliding or sliding movements
Example of pivot synovial joint
Proximal radio ulnar joint
Atlantoaxial joint
Allows rotation, round bony process fits into bony ligament out socket
Example of a condyloid synovial joint
Metacarpophalangeal joint
Permits Flexion and extension
Pyramids abduction and adduction
Example of a ball and socket joint
Glenohumeral joint
Permits movement in several axis
Rounded head fits into concavity
What are the functions of synovial fluid found in synovial cavity of a joint?
Lubrication
Nutrient distribution
Shock absorption
