The risk factors of being overweight:

Body mass index (your weight in relation to your height) is an important consideration during any surgical procedure.

Normal weight: 18.5 – 24.9
Overweight: 25 – 29.9
Obese: 30 – 34.9
Morbidly obese: 35+

You can calculate your BMI

Obesity is a risk factor for developing joint arthritis and in many, may mean surgery is needed sooner than in normal-weight counterparts.

This is due to:

  • Increased joint loading and wear and tear
  • Increased inflammation in those who are obese

The end result is increased destruction of the smooth cartilage which protects the ends of the thigh bone (femur), shin bone (tibia) and knee cap (patella).

An increasing BMI over 30 is associated with increased risks following joint surgery. Complications are especially notable in those with a BMI over 40.

Risks include:

  • Wound/joint infection
  • Blood clot formation (deep vein thrombosis)
  • Re-operation due to implant loosening/increased wear and tear

To decrease the risks associated with surgery, you may be required to be within a certain BMI range to be fit for surgery.