Knee condition
Knee osteoarthritis is the most common reason knees hurt after midlife — and the most misunderstood. It is not a tyre wearing down on a fixed schedule. It is a living joint that answers to what you ask of it: strengthen the muscles around it and lighten the load through it, and a worn knee can serve you comfortably for years. This page covers what genuinely helps, in the order the evidence supports it — and how to know when it’s time to talk about a replacement.
Tap any that apply to you — this is guidance, not a diagnosis, but it tells you how quickly to act.
One or more warning signs deserve prompt attention. A hot swollen knee with fever needs same-day assessment, and locking, buckling or sudden swelling point to a mechanical problem inside the joint rather than ordinary wear — all of them do better examined early.
Good news — nothing urgent on that list. Activity-related ache and morning stiffness without those features fit ordinary osteoarthritis — the kind that responds well, and often surprisingly well, to the plan below. An assessment confirms the diagnosis and builds it around your knee.
Cartilage is remarkable stuff: slippery, shock-absorbing, and dependent on movement for its nourishment because it has no blood supply of its own. Osteoarthritis develops when the balance between the load a knee carries and its capacity to handle that load tips the wrong way — and the contributors are more addressable than most people assume:
And the important lookalikes: a knee that is hot and swollen in attacks may be inflammatory rather than worn, and pain at the front of the knee in a younger, active person is usually a different story. More: gout in the knee → More: runner’s knee →
Two things move the needle more than anything else, and neither is exotic. Strength: the thigh muscles are the knee’s built-in shock absorbers — building them is the treatment with the strongest evidence in all of osteoarthritis care, more effective than any injection, and it works at every stage of wear. Load: reducing what the joint carries pays back several times over with every step, which is why even modest weight loss produces disproportionate relief. Around those two: keep moving in ways the knee tolerates — walking, cycling, swimming, pool work — and build distance gradually rather than heroically. Warmth before activity, cold after a flare, and simple pain relief from your pharmacist to keep you moving during bad patches. Swap deep squats and long kneeling for kinder alternatives, use a handrail on stairs without embarrassment, and choose cushioned footwear. A knee that swells for more than a day is telling you the dose was too high — not that movement was the mistake.
Arthritis is measured by what it costs you, not by the X-ray — tap the one that fits:
The best possible moment to act. Early arthritis with good muscle and mobility responds beautifully to strengthening and load management — and starting now means starting from strength rather than clawing it back later. An assessment confirms what you’re dealing with and sets a programme worth following.
Your knee has outgrown self-management. When shopping, stairs and standing are being planned around, it’s time for a proper assessment: confirming the pattern, a guided strengthening programme, and a frank conversation about whether targeted injections would help you get the strengthening done.
This is the conversation replacement exists for — and it deserves proper answers. Pain that breaks sleep and a world that keeps contracting are the recognised markers, not the X-ray. Come in with your imaging: we’ll map what’s left to try, and where surgery genuinely fits — including whether a partial replacement suits your pattern of wear.
Treatment is a ladder — and unusually, the bottom rungs are where the best evidence lives:
Tap each card to reveal the truth:
Knee osteoarthritis is the gradual wearing of the smooth cartilage that caps the bones inside your knee, along with changes in the bone beneath it and the lining around it. It is the commonest cause of knee pain from midlife onward. The important correction to the usual picture: it is not a tyre wearing down to nothing on a fixed schedule — it is a living joint responding to how it is loaded, which is precisely why treatment can change how it feels and functions.
The best knee osteoarthritis treatment is the least glamorous: strengthening the muscles around the joint, staying active in ways the knee tolerates, and reducing the load it carries. Exercise therapy has the strongest evidence of anything in the field — stronger than any injection — and weight reduction multiplies its effect. Targeted injections help selected knees through bad patches, and joint replacement is reserved for knees whose pain and function no longer respond to all of the above.
For most people, no — the opposite. Cartilage has no blood supply and depends on movement to stay nourished, and the muscles that protect the joint only strengthen if used. Knees generally do worse from long inactivity than from regular, sensible walking. The sensible caveats: build distance gradually, choose flatter routes during flares, and let a knee that swells for more than a day tell you the dose was too high.
“Bone on bone” describes an X-ray, not a decision. Joint space narrowing shows how much cartilage remains — it doesn’t measure your pain, your function or your quality of life, and the match between X-ray severity and symptoms is famously loose. Plenty of people with dramatic films walk comfortably with good muscle strength. Replacement is considered when pain and lost function persist despite proper treatment — the knee decides, not the picture.
When the knee has stopped answering to everything reasonable and is quietly shrinking your life: pain that disturbs sleep, stairs and distances that keep contracting, activities you have stopped attempting, and limited relief from months of proper strengthening, load management and appropriate injections. Age matters less than impact. If arthritis affects only one compartment, a partial replacement may serve better than a total — a decision made from your imaging and examination together.
Same-day appointments are usually available. Call or book online — our team will take it from there.
