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15 Cards in this Set

  • Front
  • Back
What is degenerative joint disease
osteoarthritis, most common form of arthritis
intrinsic disease of cartilage and its matrix characterized by progressive erosion of articular cartilage
What is rheumatoid arthritis
chronic systemic inflammatory disorder
immunlogic factors are key
Tissue change characteristic of DJD
total loss of cartilage (eburnation)
destroyed bone (subchondral cyst)
boney outgrowths from edge of articular cartilage (osteophytes) that limit motion and cause pain
Tissue change characteristic of RA
inflammation of synovium and prolif of syn cells
mass produced called pannus
encroachment onto articular cartilage and erosion
dustruction of bone
obliteration of joint space and fusion of adjacent bones (ankylosis)
decrease of bone mass below normal
defective matrix mineralization associated with nutritional deficit and abnormal met of vit D, UNDERMINERALIZED REMODELED BONE adults, rickets in kids
reduction in mass of bone per unit volume of bone and micr architectural deterioratio of bone space (increased pores)
net rate of bone loss
mineralization is normal
Risk factors of Osteoporosis
age, sex, loss of estrogen or testoterone,
Paget disease
osteitis deformans
sequence of repetitive bone resorption and formation
osteoclastic - osteoblastic
haphazard mosaic pattern of bone
avascular necrosis or aseptic necrosis
infarct usually in head of femur
inflammation of bone and marrow, implies infection
different types of fractures
complete, incomplete, closed or compound, comminuted and displaced
Why is it important to recognize a fibrous cortical defect
NOT a neoplasm, although they disappear with age, the can become large and weaken bone and result in fracture
what are the radiographic differences between benign and malignant bone neoplasms
benign have sclerotic rim of reactive bone around their periphery
malignant grow rapidly and do not produce layer of reactive bone, cortex is also destroyed
most common malignant tumors of bone and cartilage
osteosarcoma most common malignant neoplasm of bone
primite neuroectodermal tumor or Eyings sarcoma