title: Natural history of spontaneous osteonecrosis of the knee (SONK): a review.
mesh_terms: D000328:Adult; D000368:Aged; D005260:Female; D005269:Femur / Q000000981:diagnostic imaging / Q000473:pathology; D006801:Humans; D007717:Knee / Q000000981:diagnostic imaging* / Q000473:pathology; D008297:Male; D008875:Middle Aged; D010020:Osteonecrosis / Q000000981:diagnostic imaging* / Q000473:pathology / Q000628:therapy; D011859:Radiography; D011877:Radionuclide Imaging; D013977:Tibia / Q000000981:diagnostic imaging / Q000473:pathology