Wednesday, April 23, 2014

Osteonecrosis In Depth

Osteonecrosis, also known as Avascular Necrosis, Aseptic Necrosis, or Ischemic Necrosis, is a disease which results from temporary or permanent lack of blood flow to bones.  Without blood flow the bone will ultimately die, causing the bone to collapse.  If this happens near a joint, the surface of that joint will collapse as well.  This can happen in any bone, but normally it attacks the ends of the femur (the thigh bone), other common sites include, the upper arm, the knee, shoulders, and the ankles.  The amount of disability or injury that results from it depends on what part of the bone is affected, how large the area is, and how well the bone rebuilds itself.  Normally, new bone replaces old bone, like with an injury, when it heals the bone is rebuilding that part.  But, with Osteonecrosis, the healing process is greatly affected and it causes the bone and eventually the joint surface to break down and collapse.  This causes extreme pain and arthritis.  Causes of this disease include: 
  • Alcoholism
  • Injury
  • Steroid Use
  • Rheumatoid Arthritis (RA)
  • Osteoarthritis
  • Osteoporosis
  • Radiation
  • Chemotherapy
  • Organ Transplantation (particularly the kidney)
  • Systemic Lupus Erythematosus (SLE)
  • Blood Disorders such as Sickle Cell Disease
  • HIV
  • Gaucher’s Disease
  • Caisson Disease
  • Gout
  • Vasculitis
This can happen to men or women, but it takes place normally in men, unless it's linked to Lupus, then it's normally in women.  It can take place in people of any age as well, although it's most common in people in their 30s, 40s, and 50s.  To diagnose, the physician will take an X-ray, CT scan, MRI, or possibly a bone scan.  Once diagnosed the physician can treat with surgery, or medication.  The treatment depends on the case, the age of the patient, the severity, etc.  Stay Informed!  

No comments:

Post a Comment