Obesity and Osteoarthritis Knee

Your bathroom scale may give you a measure of your weight and help you follow changes in your weight, but it is not the best way to determine if you are overweight or obese, or at risk for developing obesity and its related health conditions.

Obesity is most scientifically expressed in terms of Body Mass Index (BMI). It is calculated as a ratio of your weight in kilograms and square of your weight in meters.
This would mean if your weight is 65 kg and your height is 170 cm (5’7” or 1.7m) your BMI will be
65/1.7² = 22.4
Body Mass Index is a number based on both your height and weight. It can help you determine the degree to which you may be overweight and gives a reasonable assessment of total body fat for the general population.
Knowing your BMI is important for you and your family. It correlates better with health conditions like heart disease and Type 2 diabetes than does weight itself. BMI is not perfect though. Some people, like athletes, may measure a high BMI but have more muscles than fat.