Joints Flashcards
What are the 3 joint types?
Fibrous, Cartilaginous, Synovial
Fibrous include what 3 types?
Sutures, Syndesmosis, Gomphosis
Where are syndesmosis found?
Ankle (tibiofibular), membrane between radius and ulna
What are the two suture types?
Squamous - edges overlap
Serrated - edges interlock
Where are gomphosis found?
Joint between a tooth and bone in its socket
Hyaline cartilage joints (aka synchondroses) found where?
Epiphyseal plates, long bone development
Fibrocartilage found?
Between IV disc, pubic symphysis
Articular cartilage found where; blood/nerve supply?
- Covers end of long bones
- NO blood or nerve supply
Synovial membrane; produces?
Vascular CT that lines joint cavity, does NOT cover articular cartilage, produces synovial fluid
Plane joints found where; axis?
- Uniaxial
- AC joint, Proximal tibiofibular, Intercarpal, Sternoclavicular
Hinge joints found where; axis?
- Uniaxial
- Elbow, knee, ankle, IP joints
Ball and socket (spheroidal) found where; axis?
- Mutliaxial
- Hip and Shoulder
Pivot (trochoid) found; axis?
- Uniaxial (rotation only)
- AA joint, Radioulnar
Condyloid & Ellipisoid joint found?
MCP joint, Radiocarpal
Saddle (sellar) joints found; axis?
- Carpalmetacarpal of thumb
- Biaxial
Where are the nerve endings found in joint?
In articular capsule
Wolff’s Law
Bone is increased where needed and reabsorbed where it is not
3 types of arthritis?
Osteoarthritis: Most common, cartilage wears down
Inflammatory: autoimmune diseases
Traumatic: sports injuries, excessive movement or physical trauma
Fibrillation is loss of and has what appearance?
- Loss of proteoglycans
- Ground-glass apperance
Eburnation is loss of/thickening of and what appearance?
Complete loss of articular cartilage (think burned away), with thickening of subchondral bone (Wolff’s law)
- Ivory- like (Hard and polished)
“Joint Mice” Ostechondroatosis is?
Fragments of cartilage and/or bone floating free in synovial fluid
- Commonly seen in degenerative joint disease i.e., Osteochondrosis Dissecans
