Answer:
t is mainly caused as a result of breaking down of joint-cartilages. Certain metabolic, hereditary or mechanical reasons lead to the loss of cartilages. Some of the factors that lead to primary osteoarthritis are:
  • Family history
  • Joint injuries
  • Excessive stress on the joints
  • Recurring use of joints
  • Being obese



Osteoarthritis is often related to the wear and tear of joints and therefor is often but not always related to old age. it is however a result of aging. Degenerative arthritis is also secondary in nature. Secondary OA could result as an outcome of other conditions or diseases like:
  • Diabetes
  • Joint injuries from accidents
  • Obesity
  • Joint disorders
  • Inflammatory diseases
  • Joint infections
  • Deterioration of ligaments
  • Wilson's disease
First answer by Robbb. Last edit by Robbb. Contributor trust: 2275 [recommend contributor recommended]. Question popularity: 2 [recommend question].