The painful knee.
D000368:Aged; D001265:Athletic Injuries / Q000175:diagnosis; D001847:Bone Diseases / Q000175:diagnosis; D002062:Bursitis / Q000175:diagnosis; D006801:Humans; D007592:Joint Diseases / Q000175:diagnosis; D007717:Knee; D007718:Knee Injuries / Q000175:diagnosis; D008022:Ligaments; D008875:Middle Aged; D009135:Muscular Diseases / Q000175:diagnosis; D010146:Pain; D013582:Synovial Fluid; D052256:Tendinopathy / Q000175:diagnosis