Osteonecrosis of the knee.
D000368:Aged; D001178:Arthroplasty; D003475:Curettage; D003937:Diagnosis, Differential; D005260:Female; D006801:Humans; D007719:Knee Joint / Q000601:surgery; D008297:Male; D008875:Middle Aged; D010003:Osteoarthritis / Q000175:diagnosis; D010020:Osteonecrosis / Q000145:classification / Q000175:diagnosis / Q000601:surgery; D010027:Osteotomy; D011379:Prognosis; D013977:Tibia / Q000601:surgery