Osteoarthritis of the knee is mostly happened to women and closedly related to overweight, profession, and associated diseases such as diabetes mellitus, osteoporosis... Objectives: Survey symtomps of osteoarthritis according to Vietnam Rheumatology Asociation - VRA (1991), the retricted movement of the knee and the relationship among Osteoarthritis's risk fartors on women over 40 years of age.