Most of the conversation before a knee replacement is about the operation. In practice, what the patient does in the six weeks beforehand has a large effect on how the first six weeks afterwards go.

Prehabilitation is not optional padding

The strength of the quadriceps before surgery is one of the better predictors of function afterwards. A knee that starts weak takes longer to recover, because rehabilitation has to rebuild from a lower base while also dealing with surgical swelling.

Static quadriceps contractions, straight leg raises, sit to stand practice and stationary cycling where tolerated are the core of it. Twenty minutes daily is more useful than an hour twice a week.

Working on extension before surgery matters too. A knee that will not straighten before the operation is harder to straighten after it.

Medical optimisation

Blood sugar control in diabetic patients is directly linked to wound healing and infection risk, and it is worth putting effort into in the months before surgery rather than the week before.

Stopping smoking improves wound healing, and even a few weeks helps. Anaemia should be identified and corrected in advance, because it affects recovery and transfusion risk.

Blood thinners, diabetes medication and some arthritis drugs need a plan agreed between your surgeon, physician and anaesthetist. Bring a complete list of everything you take, including supplements.

Dental and skin checks

Untreated dental infection and skin infections such as a fungal infection between the toes are genuine sources of bacteria. Both should be treated before surgery rather than after. Any break in the skin near the knee should be healed before the operation date.

Weight, where it applies

Weight reduction before surgery is useful but it is not a reason to delay indefinitely in a patient whose joint has failed and who cannot exercise because of it. It is a conversation about what is realistically achievable, not a threshold to be met.

Preparing the home

Most patients manage well at home with simple changes. A firm chair with arms at the right height, a raised toilet seat, loose rugs removed, a clear path to the bathroom, and essentials moved to waist height all reduce friction in the first fortnight.

Arrange for someone to be at home for at least the first week, and plan for help with shopping and cooking for two to three weeks.

Expectations, set honestly

A knee replacement reliably relieves arthritic pain and restores walking. It is not designed for running, deep squatting or kneeling comfortably. Most patients are walking indoors without support by six weeks and notice the knee less and less between six and twelve months.

Knowing that the knee will feel warm, swollen and foreign for several weeks prevents a normal recovery being experienced as a complication.

A detailed preparation guide is available here: https://www.mayurajcc.com/knee-replacement-guides/preparing-for-knee-replacement

Questions to settle before the date

Ask what approach will be used and why, what the pain control plan is for the first week, when physiotherapy starts, how long you will be in hospital, and what the follow up schedule looks like. A clear answer to each is a good sign.