Spontaneous osteonecrosis of the knee
- Spontaneous osteonecrosis of the knee
Spontaneous Osteonecrosis of the Knee or SONK is the result of vascular arterial insufficiency to the medial femoral condyle of the knee resulting in necrosis and destruction of bone. It is more common in females over the age of 50 with possible risk factors of corticosteroid use, Lupus, alcoholism, pancreatitis, sickle cell anemia, and rheumatoid arthritis.
igns and Symptoms
The condition is usually characterized by a sudden onset of knee pain, worse at night. Examination reveals tenderness of the medial condyle, joint effusion, and occasional locking of the knee joint.
Sources
Souza, Thomas (2007). "Lower Extremity: Technique and Management." Palmer College of Chiropractic West.
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