Flying too soon after your operation should be avoided owing to the increased risk of deep vein thrombosis (blood clot). If you are planning to travel abroad you should discuss this with your surgeon.
It is difficult to predict whether your knee will set off alarms at security, although a lot of people ask about this. Some do, however it depends largely on how sensitive the machines are set when you walk through. The best advice is to explain the fact that you have a knee replacement before you walk through the machine.
Please be aware that if you go on holiday soon after your surgery and your wound is injured or you acquire an infection, your travel insurance may be affected.
Staff at the Royal Orthopaedic Hospital are here to help and answer any questions you may have, so please do not hesitate to ask at any time.