Healthcare experts advise a knee replacement operation when pain and damage on the knee turns into something serious, and medicines and previous therapies do not ease the pain any more. Your general practitioner will request X-rays to inspect your knee bones and cartilage and check the extent of injury, and evaluate whether the pain might be from an alternative source.

Although knee replacement surgery is widely performed on individuals who are overweight due to the fact they are much more predisposed to knee problems, surgery of this nature is not recommended to those who are severely overweight because replacement joints are much more prone to fail in them.

The immediate effect of doing a total knee replacement to a severely overweight person has revealed that obesity was linked to a longer hospital confinement, necessity to use rehabilitation services instead of recuperation at home, and an increased risk of complications. The changes become more significant as the body mass index (BMI) increases, in particular the morbidly obese can suffer from increased wound problems, infections and medial collateral ligament avulsion.

People of both sexes who are overweight are much more likely to have knee replacement surgery and the more overweight they are, the more likely it is. Men who are obese are five times more likely to have a replacement knee and women are four times more likely to have it.

People, who are too fat, regardless of age, stand for the biggest number of beneficiaries of knee replacements. However, although overweight people are credited for most knee replacements, the more overweight they are, the more prolonged the process is before they can have the surgery. The discrepancy in wait time is not a factor of bias against overweight or obese people. According to the specialists, the fast track for knee replacement surgeries tends to cater to patients who pose less chance of complications.

Joint replacement has to do with an operation to exchange bone ends in an injured joint. This surgery creates new joint surfaces. The ends of the damaged thigh and lower leg bones and usually the knee cap are capped with artificial surfaces lined with metal and plastic. Typically, orthopaedic surgeons change the whole facade at the edges of the bones of the thigh and lower leg. However, it is increasingly popular to replace just the inner knee surfaces or the outer knee surfaces, depending on the location of the damage. This is called unicompartmental replacement. Those who are first-rate applicants in getting a unicompartmental replacement have greater end results compared to having total joint replacement. Orthopaedic surgeons commonly cement knee joint parts to the bones.

Joint changes caused by osteoarthritis may also stretch and damage the ligaments that connect the thigh bone to the lower leg bone. After surgery, the artificial joint itself and the remaining ligaments around the joint usually provide enough stability so that the damaged ligaments are not a problem.

Surgeons most often use regional anaesthesia for knee replacement surgery. The preferences for anaesthesia are usually determined on by your surgeon, your health in general, and sometimes on what you prefer.