Questions to Ask Your Knee Surgeon Before a Replacement

The most useful thing you can bring to a surgical consultation is a written list of questions, because the appointment is short, you will be nervous, and the answers you forget to ask for are usually the ones that would have settled your mind. A knee replacement is elective and quality-of-life driven, so the consultation is a two-way conversation, not a verdict handed down to you ¹. What follows are the questions worth asking, grouped roughly in the order they matter, with notes on what a clear answer sounds like.

I delayed my own replacement for years partly because I never knew what I was allowed to ask. I sat through appointments nodding, went home, and only then thought of the things I actually wanted to know. Writing them down beforehand changed every consultation after that.

Questions about whether you need surgery yet

Start before the operation itself: ask whether you have truly exhausted the alternatives. International guidance puts non-surgical care first for almost everyone, so a fair question is whether your exercise, weight management, and pain relief have been given a genuine trial over months, not weeks ². Replacement is considered when severe, persistent symptoms and lost function remain after good conservative care, not on the strength of an X-ray alone ².

Useful questions here:

• Given my symptoms and my function, why is now the right time rather than waiting?
• Is there anything in my conservative care I have not yet tried that might still help?
• My X-ray and how my knee feels do not seem to match: which are you treating?

A good answer ties the recommendation to how your knee is affecting your daily life, not just to the picture on the screen.

Questions about the implant and how long it will last

Ask plainly how long your implant is expected to last and how that applies to someone your age. This is an answerable question: pooled registry and review data show around 8 to 9 in 10 total knee replacements last 20 years or more ³. If you are younger or very active, your lifetime chance of needing a second operation is higher simply because you may outlive more of the implant’s service life, so it is worth asking your surgeon to put your own situation in that context.

Useful questions here:

• Roughly how long would you expect this implant to last for me?
• What are the chances I will need a revision operation later, given my age?
• What type of implant and fixation are you planning, and why that choice for me?

Questions about partial versus total replacement

Ask whether a partial knee replacement is an option for you, even if a total was the first thing mentioned. A partial (unicompartmental) replacement resurfaces only the one damaged compartment and tends to give a faster recovery and a more natural-feeling knee, though it carries a higher revision rate and suits fewer people. Not every surgeon offers it routinely, so it is reasonable to ask directly whether your arthritis is confined to one compartment and whether you qualify. If the answer is that your knee needs a total replacement, asking why helps you understand the trade-off rather than simply accepting it.

Questions about your surgeon’s experience

Ask how many of these operations your surgeon performs each year. Higher surgeon and hospital volume is associated with better outcomes, so the number is relevant to you, and asking it is normal rather than impertinent. You can pair it with a question about their own results.

Useful questions here:

• How many knee replacements do you do in a typical year?
• What are your own infection and revision rates for this operation?
• Who will actually perform the surgery, and who manages my care afterwards?

A surgeon comfortable with these questions will answer them without defensiveness.

Questions every woman should add

Raise bone health early. Women have a higher risk of lower bone density after about age 50, and the fall in estrogen at menopause is part of why; lower bone density affects surgical planning and fracture risk, so it belongs in the conversation ⁴. This does not change whether you can have surgery, only how well it can be planned.

Useful questions here:

• Has my bone density been considered, and would a DEXA (DXA) scan help?
• Do my menopausal status or any osteoporosis risk change how you would plan my operation?
• Is there anything about recovery that tends to differ for women that I should expect?

Questions about risks and realistic outcomes

Ask for the actual numbers, framed as wanting honest expectations rather than reassurance. Serious complications are uncommon but real: prosthetic joint infection occurs in roughly 1 to 2% of cases, and venous thromboembolism (blood clots) is the headline early risk, kept low with early movement and prophylaxis. Just as importantly, ask about satisfaction: roughly 80 to 90% of people are pleased with the result, but around 1 in 5 report some residual pain or stiffness even after a well-done operation ³. Knowing that in advance is far easier than discovering it afterward.

Questions about recovery and what it asks of you

Finish with recovery, because it is the part people most often underestimate. Walking with aids usually starts the same day or next day, most people are off aids by around 4 to 6 weeks, and functional recovery to most daily activities is common by 3 months, with full recovery taking up to a year. Ask what your week-by-week looks like, what physiotherapy you must commit to, and what support you will need at home. The honest answer shapes how you prepare more than any other.

If you would like to read more before your appointment, our companion pieces on the operation itself, partial versus total replacement, and week-by-week recovery cover the detail behind several of these questions.

This article is general information, not medical advice. Your situation is individual; discuss any decision about knee surgery with a qualified clinician who knows your history.