Osteonecrosis of the knee and medial meniscal tears.
D000367:Age Factors; D000368:Aged; D005260:Female; D006801:Humans; D007592:Joint Diseases / Q000150:complications* / Q000000981:diagnostic imaging; D007719:Knee Joint / Q000000981:diagnostic imaging; D008875:Middle Aged; D010007:Osteochondritis / Q000209:etiology*; D010020:Osteonecrosis / Q000150:complications* / Q000000981:diagnostic imaging; D011859:Radiography