This is a question many patients want to ask but feel awkward raising. It deserves a clear and respectful answer. Weight does play a part in hip and knee replacement, but it is rarely a simple yes or no. Being above an ideal weight does not automatically rule out surgery. Mr Kosuge believes patients should understand the facts so they can make informed decisions, without judgement.

Why weight matters at all

Carrying extra weight increases the load through the hip and knee joints, which is part of why heavier patients often develop symptoms of arthritis. Around the operation itself, a higher body weight can increase certain risks, including wound healing problems, infection, blood clots and the demands of the anaesthetic. These are the reasons weight is discussed. They are practical rather than personal.

How surgeons actually use weight in the decision

Many units refer to body mass index, or BMI, as one factor in planning surgery. It is important to understand that a BMI figure is a guide, not a rigid cut-off applied on its own. The decision considers the whole picture, including your general health, your symptoms, how much the arthritis is affecting your life and the balance of risks and benefits for you as an individual. For many patients above an ideal weight, replacement surgery is still entirely appropriate and highly successful.

What losing some weight before surgery can do

Where there is time, losing even a modest amount of weight before surgery can reduce the risks above and can ease the load on the joint afterwards. It is one of the most useful things a patient can do to help their own outcome, alongside staying active within the limits of the pain. This is not about reaching an ideal figure. It is about improving the odds in your favour.

A supportive conversation, not a barrier

The purpose of discussing weight is never to turn patients away. It is to make surgery as safe as possible and to give the best chance of a good result. Where weight is a genuine concern, Mr Kosuge will discuss it honestly and set out a sensible plan, which may include support to lose some weight before proceeding.

Discussing your situation

Mr Kosuge will assess your joint and your general health and give you a straight answer about your options. To arrange a consultation or follow-up at The Rivers Hospital, High Wych Road, Sawbridgeworth CM21 0HH:

• Online booking

• Telephone: 01279 602675

This is one of the first questions almost every patient asks and it is an important one, because driving is tied up with independence and getting back to work. The honest answer is that there is no single fixed date. It depends on which side was operated on, the type of car, how your recovery is going and, above all, whether you can drive safely. Here is how Mr Kosuge advises patients to think about it.

There is no fixed legal time, but there are clear conditions

In the UK there is no law that states an exact number of weeks before you may drive after joint replacement surgery. What matters is that you are back in full control of the car. You must be able to sit comfortably, operate the pedals without hesitation and perform an emergency stop with full force and no pain. You must also no longer be taking strong pain medication that could affect your reactions. Until all of those are true, you are not ready.

Which side matters and so does the car

Recovery of driving readiness tends to be quicker after surgery on the left leg in an automatic car, because the left leg does less of the work. Surgery on the right leg, or driving a manual, usually takes longer, because the operated leg is doing more. As a general guide many patients are ready somewhere between four and eight weeks, but this is a guide and not a target. Some are ready sooner and some later.

Tell your insurer

It is sensible to inform your car insurer that you have had surgery before you return to driving. Policies vary. Confirming that you are covered avoids any difficulty in the event of a claim. Your insurer may also ask that your surgeon or GP has confirmed you are fit to drive.

A simple test

A practical check, once you feel ready, is to sit in a stationary car and practise moving your foot firmly to the brake as though stopping in an emergency. If you can do this quickly, firmly and without pain while off strong painkillers, you are close. If it makes you hesitate, you are not.

Confirming you are ready

Mr Kosuge will give you personalised advice on returning to driving at your follow-up, based on your operation and your progress. To arrange a consultation or follow-up at The Rivers Hospital, High Wych Road, Sawbridgeworth CM21 0HH:

• Online booking

• Telephone: 01279 602675