Relationship Between Body Mass Index (BMI) and Knee Osteoarthritis at the UKI General Hospital, Jakarta in 2017

Knee osteoarthritis is a degenerative joint disease usually suffered by elderly patients, contributing to the high risk of disability. The risk factors that affect the severity of knee osteoarthritis are obesity, age, sex, occupation, patient's history of the disease, trauma and other factors. Excessive body weight is a factor that exacerbates the disease of Osteoarthritis. Generally, this research is aimed to examine the correlation between Body Mass Index (BMI) and knee osteoarthritis at UKI General Hospital in 2017. The researcher used a descriptive-analytic study with a cross-sectional approach. In this study, the researcher used 30 samples. The results showed that there was a relationship between BMI and the incidence of knee osteoarthritis. This study indicates that BMI values above average (more than 24.9) can affect the occurrence of joint space narrowing in patients. Patients with abnormal BMI have a risk of 6,429 times the risk of joint space narrowing compared to patients with normal BMI. The mean BMI value of patients with knee osteoarthritis at UKI General Hospital is 25.6. Therefore, the researcher concluded that there is a correlation between BMI and knee osteoarthritis, in which a high BMI value (>24.9) may affect the occurrence of joint space narrowing among the patients. The mean BMI value among the osteoarthritis patients at UKI General Hospital is 25.6, indicating that most osteoarthritis patients are pre-obese/overweight. Key words: Knee osteoarthritis, Body Mass Index (BMI), joint space narrowing