Articulations Flashcards
Ex of bony joint
Metopic suture
Bony joints
Complete bone fusion
Fibrous joint
Held together by collagen fibers
Cartilaginous
Similar to hyaline, but contains water
Synovial
Has articulated capsule and fluid
Synarthrosis
Immovable joint
Ex of synarthrosis
Sutures
Gomphoses
Synchondroses
Synostoses
Sutures
Found in the skull
Gomphoses
Teeth articulate to jaw bones
Synchondroses
Epiphyseal plates, rib 1 to sternum
Synostoses
Metopic suture
Ampiarthrosis
Slightly moveable
Syndesmoses
Distal tib/fib
Sympyses
Pubic bones, between centra of vertebrae
Ampiarthrosis examples
Syndesmoses and symphyses
Diarthrosis
Highly moveable; weak joints
What are the 6 Diarhrosis joints
Gliding, hinge, pivot, ellipsodial, saddle, and ball and socket
Ex of gliding joints
Between articulate processes of vertebrae, intercarpal, intertarsal
Ex of hinge joint
Elbow, knee, interphalangeal
Pivot joint
Alanto-Axial, proximal radioulnar
Ellipsodial joints
Radiocarpal, metatarsalphalangeal, metacarpal phalanges
Saddle examples
Carpometacarpal
Ball and socket
Glenohumeral, coxal
Articular capsule
Has a synovial membrane and synovial fluid
Synovial membrane
Connective tissue
Synovial fluid
Cells of the membrane make this
Accessory structures of synovial joint
- Menisci and fat pads
2. ligaments
Meniscus
Fibrocartilage, channels fluid within the joint, like a sponge, shock absorber
Fat pad
Fills space when bones move apart, insulated, prevents injury
Intrinsic ligaments
Inside the capsule
Extrinsic ligament
Outside of the capsule
Sprain
Portion of lig. Torn, but entire joint maintains integrity
Bursa
Fluid filled pockets, form where tendons/lig. Rub against other tissues
Bunion
Most common form of bursitis, great toe, also “housemaid’s knee” or “student elbow”
Luxation or dislocation
Complete slippage of bone out of joint
Subluxation
Partial slippage of bone out of joint
Ankylosis
Complete bony fusion of the joints due to fibroblast activity
Rheumatoid arthritis
Autoimmune disease, inflammation of capsule
Osteoarthritis
Ages 60+, wear and tear of articulate cartilage cause thickening of capsule
Gouty arthritis
Crystals form in synovial fluid, usually calcium salts