- West-Japanese Society of Orthopedics & Traumatology
- 整形外科と災害外科 (ISSN:00371033)
- vol.44, no.1, pp.12-15, 1995-03-25 (Released:2010-02-25)
We measured the incidence of osteoarthritis of outpatients in six university and thirty-six general hospitals. In addition we performed a case study on osteoarthritis of the knee to investigate physical and other factors associated with severity of symptoms, uning a selfadministered questionnaire.Investigation of the hospital statistics revealed that 7.6% of all orthopeadic patients had osteoarthritis of the knee, and 70% of these cases were females. Regarding age 97% of patients were over forty years of age, and 900, 000 men and women were newly diagnosed with this disease every year.Symptoms of this disease were more severe with increasing body weight and BMI (Body Mass Index) at the time of both initial examination and at forty years of age. Bluecollar workers presented with more severe symptoms than did other workers.