Joint & Movement Health
Degenerative changes in the knee joint that can cause pain, stiffness, swelling and reduced function.
Physician-led assessment · individualized care · Vancouver clinic
Understanding Knee Osteoarthritis
Knee osteoarthritis is widely misread as simple 'wear and tear', but it is better seen as a whole-joint condition, involving cartilage, bone, the joint lining, ligaments, and the surrounding muscles, in which the balance between tissue breakdown and repair tips over time. That reframing is genuinely useful, because it accounts for one of the field's most counter-intuitive findings: symptoms and X-ray changes often do not match, and treatment is guided by how the knee feels and functions and by examination, not imaging alone. It also accounts for why strengthening the surrounding muscles and managing load frequently help, since the joint is a working system, not just a worn surface.
Causes and Contributing Factors
Osteoarthritis develops when the balance between joint tissue breakdown and repair is disrupted over time, affecting the whole joint rather than cartilage alone. Contributing factors include age, previous knee injury or surgery (such as a meniscus or ligament tear), repetitive high load, excess body weight, joint alignment, muscle weakness and a family history. It is best understood as a gradual, multifactorial process rather than simple 'wear and tear', and the degree of structural change on imaging does not reliably predict the amount of pain a person experiences.
Signs and Symptoms
Knee osteoarthritis usually develops gradually, and symptoms can fluctuate. Common features include:
Assessment
A clinician typically reviews the pattern of pain, stiffness and swelling, how symptoms affect daily activities, previous injuries, and general health. Examination assesses range of motion, stability, alignment, swelling, tenderness and surrounding muscle strength. X-rays may support the picture, but because imaging changes do not always match symptoms, diagnosis and treatment rest on the overall clinical picture. How limiting the knee actually is, what the examination shows and what you need it to do are weighed together, and that is what decides whether exercise-based care, injection options or surgical referral is the right next step.
Treatment Options
These are some of the options connected to this concern. The appropriate plan depends on assessment, suitability, and your goals.
Modern guidelines are clear that non-surgical care is the foundation of knee osteoarthritis, and that it genuinely works: patient education, a structured exercise program to strengthen the muscles that stabilise and offload the knee, and weight management where relevant can meaningfully reduce pain and restore function for many people. Physiotherapy, activity modification, footwear or bracing, and the appropriate use of pain-relieving measures are added according to your symptoms and goals. These foundations are not a holding pattern before 'real' treatment. For most people they are the treatment.
Regenerative injections, particularly platelet-rich plasma (PRP) prepared from your own blood, have been studied more in the knee than almost anywhere else. Some trials are encouraging for pain in milder osteoarthritis, but the evidence remains inconsistent and is not yet strong enough for major guidelines to routinely endorse it. We treat it accordingly: a considered, individual option for selected patients, discussed honestly and always alongside, never in place of, exercise and weight management. It does not regrow cartilage. When symptoms stay severe and limiting despite good conservative care, surgical options such as joint replacement are considered through referral.
There is rarely a single right answer here, and marketing often outruns the evidence. Our physician-led role is to assess the knee accurately, set out each option and its evidence plainly, including its limits, and agree a reasoned plan with you, arranging referral when that is the right call.
For the fuller picture, explore the treatment pages above or discuss the options during a consultation.
Knee osteoarthritis is approached here as a whole-joint, guideline-first condition rather than a scan finding to chase. Structured exercise, muscle strengthening and weight management where relevant are the core of treatment for the great majority of patients, pursued before, not instead of, considering injections. PRP is discussed honestly as an option for selected patients with milder disease, never presented as a substitute for the exercise-based foundation or as a way to regrow cartilage.
Selected sources informing this page. Canadian guidance is prioritised, and manufacturer materials are not treated as independent clinical evidence.
Medical Assessment
Assessment is important when knee pain is persistent, limits daily activities, or is worsening. Prompt medical attention is needed for a knee that is hot, red and markedly swollen, especially with fever, which can suggest infection or an inflammatory flare, or for a knee that locks, gives way repeatedly, or becomes acutely swollen after an injury. Rapidly progressive pain or symptoms out of keeping with osteoarthritis should also be reviewed.
Frequently Asked Questions
It is more accurate to see it as a whole-joint condition where the balance of tissue breakdown and repair is disrupted, rather than simple mechanical wear. This matters because the process can often be influenced by exercise, weight and other factors, rather than being purely inevitable.
For most people, appropriate exercise helps rather than harms, by strengthening the muscles around the knee and restoring function. Guidelines list structured exercise as a core part of care. A clinician or physiotherapist can help you find a suitable, well-tolerated program.
Not usually, at least initially. Most people are managed with non-surgical care such as exercise, weight management and pain strategies. Surgery, such as joint replacement, is generally considered when symptoms remain severe and limiting despite these measures.
Imaging changes and symptoms often do not match closely in osteoarthritis. Some people have significant changes on X-ray with little pain, and others have marked pain with modest changes. This is why care is guided by symptoms and function rather than imaging alone.
The knee is one of the most-studied areas for platelet-rich plasma (PRP), and some trials suggest it may reduce pain in milder osteoarthritis. However, the evidence is mixed and major guidelines do not yet routinely endorse it, so it is best viewed as an individual option for selected people rather than a proven or standard treatment. It does not regrow cartilage or replace the benefits of exercise and weight management, and suitability is decided after assessment.
Physician Assessment
An assessment can help clarify what may be contributing, which options may be appropriate, and what a reasonable next step could look like for you.
Visit Our Clinic
Anti-Aging Medical & Laser Clinic combines medical assessment, individualized planning, physician oversight, and a broad range of treatment options in its Vancouver clinic.
Bring your questions, treatment history, and goals. Your provider can help you understand appropriate options, expected recovery, and realistic outcomes.
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