part to synovial joint

part to synovial joint

1. articular cartilage

   • resembles hyaline cartilage
   • reduces friction
   • damage to cartilage
     • osteoarthritis, rheumatoid arthritis, septic arthritis, and infection
       • bone breaks down, rough surfaces rub = pain

2. synovial fluid

   • wheres it come from
     • made of hyaluronic acid secreted by fibro blast in synovial membrane
   • whats it do
     • lubricates,
       • makes surfaces slick
     • nutrient distributuion
       • vacuum created through movement brings food takes waste
     • shock absorption
       • viscosity increase w/pressure (dilatant) decreases w/less pressure (rheopectic)

3. meniscus

   • what is it
     • articulating disk
   • wheres it at
     • between bones in knee + TMJ

4. fat pad

   • what is it
     • adipose mass
   • wheres it at
     • outside joint capsule
   • whats it do
     • fills empty space

5. ligaments

   • extracapsular
     • outside
     • patellar ligament
     • MCL, LCL
   • intracapsular
     • inside
     • cruciate ligaments
     • ACL,PCL

6. bursa

   • whats it do
     • reduce friction protects tendon or ligament rubs against tissue
     • shock absorber
   • what is it
     • thin fluid filled pocket
       • contains synovial fluid
   • wheres it at
     • connected to or separate from joint cavity
   • synovial tendon sheaths=tubular bursae
   • adventitious bursae abnormal bursae caused by indivual movement