Decision aid
Elective surgery — when and whether to operate
General information to help you prepare for your GP — not a diagnosis, not personal medical advice. It doesn't replace a consultation, and using it doesn't create a doctor–patient relationship.
"Elective" surgery doesn't mean optional or trivial — it means planned, on a timetable you and your surgeon choose, rather than an emergency. For most of these operations the real question isn't only "should I have it?" but "is now the right time?"
Across five common operations — knee or hip replacement, carpal tunnel release, hernia repair, cataract surgery and tonsillectomy — the pattern is similar. Surgery tends to be worth it when symptoms genuinely interfere with daily life and non-surgical care hasn't done enough.
This guide walks through how each call is weighed, so you can take clear questions to your GP. It's general information, not personal advice.
“Elective” doesn’t mean optional — it means planned
When a doctor calls an operation “elective,” it can sound dismissive, as if it doesn’t really matter. It means the opposite of trivial: it means planned — done on a timetable you and your surgeon choose, rather than as an emergency. The pain in your knee, the numb hand keeping you awake, the bulge in your groin: those are real, and so is the decision about what to do.
For most elective operations the question has two parts, not one. Not just “should I have this surgery?” but “is now the right time, and have the non-surgical options had a fair go?” This guide walks through five of the most common — knee or hip replacement, carpal tunnel release, hernia repair, cataract surgery and tonsillectomy — and how each call is actually weighed. None of it is personal advice, and none of it tells you to have or skip an operation; those decisions are made with your GP and surgeon.
Knee and hip replacement: timing is the whole decision
For joint replacement, there’s no magic age and no X-ray that decides it for you. The operation is usually considered when osteoarthritis pain and stiffness genuinely limit your daily life — your walking, your sleep, your work — despite a proper trial of non-surgical care: exercise, weight management, physiotherapy and pain relief, as HealthDirect sets out.
The honest tension is about timing. Wait too long and you live with avoidable pain and lose function that’s harder to regain. Go too early and you take on the risks and recovery of major surgery before simpler measures have had their chance — and a replaced joint doesn’t last forever. The useful frame is: how much is this joint costing me now, and does that outweigh the risks of surgery for someone in my health? The knee or hip replacement timing decision aid below helps you map that out before seeing an orthopaedic surgeon.
Carpal tunnel: splint first, surgery when it’s severe
Carpal tunnel syndrome — pressure on the median nerve at the wrist, causing tingling, numbness and a weak grip — often responds to non-surgical care first. A wrist splint (especially worn at night), changes to aggravating activities and sometimes a corticosteroid injection can settle milder cases, per HealthDirect.
Surgery — carpal tunnel release — comes into the picture when symptoms are severe or persistent, when there are signs of nerve damage, or when the conservative measures haven’t done enough. The decision turns on how bad it is, how long it’s gone on, and how much it’s affecting your hand. The carpal tunnel decision aid below helps you weigh splint-versus-surgery in your own situation and prepare the questions for your GP and a hand surgeon.
Hernia: watch and wait, or repair?
A hernia is a weakness in the abdominal wall that lets tissue bulge through. The instinct is often to operate straight away, but for some hernias that cause few or no symptoms, careful watchful waiting can be a reasonable choice rather than immediate surgery, as HealthDirect describes.
The catch is that hernias don’t heal on their own, and there’s a small but real risk a hernia can become trapped — obstructed or strangulated — which is a surgical emergency. So the decision weighs your symptoms, the type and size of hernia, and your overall health against that risk. The hernia watch-vs-operate decision aid below helps you frame it. One firm rule cuts across everything: if a hernia suddenly becomes painful, hard or red, or you start vomiting, that’s not a watch-and-wait situation — call 000 or go to your nearest emergency department.
Cataract: decided by your vision, not the cataract
It’s a common misunderstanding that cataract surgery is timed by how the cataract looks. It isn’t. It’s timed by how much your vision is affecting your life. When cloudy vision starts interfering with driving, reading, work or your safety, replacing the cloudy lens is one of the most common and successful operations in Australia, per HealthDirect.
If your vision is only mildly affected, waiting is perfectly reasonable. The right timing is simply the point where the benefit to your daily life clearly outweighs the small risks of the procedure. The cataract surgery timing decision aid below helps you judge where you are and what to ask your optometrist, GP and ophthalmologist.
Tonsillectomy: for the right reasons, not every sore throat
Taking out tonsils is considered mainly for two situations: frequent or severe recurrent throat infections, or breathing and sleep problems — such as obstructive sleep apnoea — caused by enlarged tonsils, as HealthDirect explains. It’s not the answer to the occasional sore throat.
Guidance generally looks at how often and how severely infections occur over a defined period, or whether sleep-disordered breathing is present, before recommending the operation. Like any surgery it carries risks — bleeding being the main one — so it’s weighed carefully, often with input from the Royal Australasian College of Surgeons and your child’s ENT surgeon. The tonsillectomy timing decision aid below helps you organise the history a surgeon will want to hear.
The shape that repeats
Across all five, the same logic holds, and the RACGP clinical guidelines and patient resources from groups like Arthritis Australia echo it: surgery is usually worth it when symptoms genuinely interfere with life, when good non-surgical care hasn’t done enough, and when the benefit clearly outweighs the risks for you. The number that matters most is rarely on a scan — it’s how much the problem is costing your everyday life.
The questions worth taking in
- Have I given the non-surgical options a proper trial, and what’s left to try?
- For someone in my health, what are the specific benefits and risks of this operation?
- What happens if I wait six or twelve months — does delay cost me anything?
- What does recovery actually involve, and how long until I’m back to normal?
These are questions, not conclusions. The aim is to decide with your GP and surgeon whether — and when — to operate.
What this is, and is not
This is general information to help you prepare for your GP — not a diagnosis, and not personal medical advice. It doesn’t tell you to have or skip any operation; those decisions are made with your own doctors, who can weigh your symptoms, health and risks. For trustworthy Australian background, see HealthDirect and the Royal Australasian College of Surgeons.
Related on this site: the osteoarthritis explainer covers the joint disease behind most knee and hip replacement decisions, and the appointment preparation decision aid helps you frame a “should I operate?” conversation well.
If you want a thorough, unhurried discussion of whether surgery is the right next step for you, you can work with Dr Lo.
Author: Dr Hoe Bing Lo — AHPRA MED0001212640 · FACRRM. Fun Doctors Pty Ltd · ABN 83 404 436 330.
Tools to take to your GP
Each runs in your browser — nothing you enter is stored or sent anywhere. They help you prepare the questions and print a one-page summary to bring to your appointment. They don't diagnose or recommend a specific treatment.
- Decision tool When to get a knee or hip replacement Open tool →
- Decision tool Carpal tunnel: surgery vs splint vs wait Open tool →
- Decision tool Inguinal hernia: watch and wait vs repair Open tool →
- Decision tool When to have cataract surgery: deciding your answer before you go in Open tool →
- Decision tool Does my child need their tonsils out? Open tool →
Frequently asked questions
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When is the right time to have a knee or hip replacement?
There's no single age or X-ray finding that decides it. Joint replacement is usually considered when osteoarthritis pain and stiffness limit your daily life — walking, sleep, work — despite a proper trial of non-surgical care like exercise, weight management, physiotherapy and pain relief. Waiting too long can mean living with avoidable pain; going too early means taking on the risks of major surgery before you've exhausted simpler options. The honest call weighs how much the joint is costing you now against the risks and the recovery, and it's a shared decision with your GP and an orthopaedic surgeon.
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Do I need surgery for carpal tunnel, or will a splint do?
It depends on how severe it is. For mild-to-moderate carpal tunnel syndrome, non-surgical measures — a wrist splint (especially at night), activity changes and sometimes a corticosteroid injection — can settle symptoms. Surgery (carpal tunnel release) is generally considered when symptoms are severe or persistent, when there's nerve damage, or when conservative measures haven't worked. The decision turns on severity, how long it's gone on, and the effect on your hand function, worked through with your GP and a hand surgeon.
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I have a hernia with no pain — do I have to operate, or can I watch and wait?
For some hernias that cause few or no symptoms, careful watchful waiting can be reasonable rather than rushing to surgery. But hernias don't heal on their own, and the trade-off is the small but real risk that one can become trapped (obstructed or strangulated) — which is a surgical emergency. So the decision weighs your symptoms, the type and size of hernia, and your general health. If a hernia suddenly becomes painful, hard, red, or you have vomiting, that's an emergency — call 000 or go to your nearest emergency department, don't wait.
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How do I know when a cataract is bad enough for surgery?
Cataract surgery isn't decided by the cataract's appearance alone — it's decided by how much your vision is affecting your life. When cloudy vision interferes with driving, reading, work or daily safety, surgery to replace the cloudy lens is one of the most common and successful operations in Australia. If your vision is only mildly affected, it's reasonable to wait. The right timing is the point where the benefit to your daily life clearly outweighs the small risks of the procedure — a conversation with your optometrist, GP and ophthalmologist.
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Should my child have their tonsils out?
Tonsillectomy is considered mainly for two reasons: frequent or severe recurrent throat infections, or breathing and sleep problems (such as obstructive sleep apnoea) caused by enlarged tonsils. It's not recommended for the occasional sore throat. Guidance generally looks at how often and how severely infections occur over time, or whether sleep-disordered breathing is present, before recommending surgery. Like any operation it carries risks, including bleeding, so it's weighed carefully with your GP and an ear, nose and throat (ENT) surgeon.
Source quality
Sources grouped by evidence tier. Australian primary tier first; international where Australia is silent or lagging. How tiers work.
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T1 AU primary 9 sources - HealthDirect — knee replacement
- HealthDirect — carpal tunnel syndrome
- HealthDirect — inguinal hernia
- HealthDirect — cataract surgery
- HealthDirect — tonsillectomy
- HealthDirect — osteoarthritis
- Royal Australasian College of Surgeons (RACS)
- RACGP — clinical guidelines
- Arthritis Australia — osteoarthritis
If you want a thorough, unhurried work-up of your own — not a generic answer — you can work with Dr Lo.